Stromal membrane-associated proteins; a subfamily of the ArfGAP family; The SMAP subfamily of Arf GTPase-activating proteins consists of the two structurally-related members, SMAP1 and SMAP2. Each SMAP member exhibits common and distinct functions in vesicle trafficking. They both bind to clathrin heavy chain molecules and are involved in the trafficking of clathrin-coated vesicles. SMAP1 preferentially exhibits GAP toward Arf6, while SMAP2 prefers Arf1 as a substrate. SMAP1 is involved in Arf6-dependent vesicle trafficking, but not Arf6-mediated actin cytoskeleton reorganization, and regulates clathrin-dependent endocytosis of the transferrin receptors and E-cadherin. SMAP2 regulates Arf1-dependent retrograde transport of TGN38/46 from the early endosome to the trans-Golgi network (TGN). SMAP2 has the Clathrin Assembly Lymphoid Myeloid (CALM)-binding domain, but SMAP1 does not.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  21 LSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:cd08839     1 LAKLLREEDNKYCADCGAKGPRWASWNLGVFICIRCAGIHRNLGVHISKVKSVNLDSWTPEQVQSMQEMGNARANAYYEA 80

                          90       100
                  ....*....|....*....|...
gi 1207114658 101 HLPENFRRPQTDQAVEFFIRDKY 123
Cdd:cd08839    81 NLPDGFRRPQTDSALENFIRDKY 103

Stromal membrane-associated proteins; a subfamily of the ArfGAP family; The SMAP subfamily of Arf GTPase-activating proteins consists of the two structurally-related members, SMAP1 and SMAP2. Each SMAP member exhibits common and distinct functions in vesicle trafficking. They both bind to clathrin heavy chain molecules and are involved in the trafficking of clathrin-coated vesicles. SMAP1 preferentially exhibits GAP toward Arf6, while SMAP2 prefers Arf1 as a substrate. SMAP1 is involved in Arf6-dependent vesicle trafficking, but not Arf6-mediated actin cytoskeleton reorganization, and regulates clathrin-dependent endocytosis of the transferrin receptors and E-cadherin. SMAP2 regulates Arf1-dependent retrograde transport of TGN38/46 from the early endosome to the trans-Golgi network (TGN). SMAP2 has the Clathrin Assembly Lymphoid Myeloid (CALM)-binding domain, but SMAP1 does not.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  21 LSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:cd08839     1 LAKLLREEDNKYCADCGAKGPRWASWNLGVFICIRCAGIHRNLGVHISKVKSVNLDSWTPEQVQSMQEMGNARANAYYEA 80

                          90       100
                  ....*....|....*....|...
gi 1207114658 101 HLPENFRRPQTDQAVEFFIRDKY 123
Cdd:cd08839    81 NLPDGFRRPQTDSALENFIRDKY 103

Putative GTP-ase activating proteins for the small GTPase, ARF; Putative zinc fingers with GTPase activating proteins (GAPs) towards the small GTPase, Arf. The GAP of ARD1 stimulates GTPase hydrolysis for ARD1 but not ARFs.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658   22 SKMLRE-DDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:smart00105   1 LKLLRSiPGNKKCFDCGAPNPTWASVNLGVFLCIECSGIHRSLGVHISKVRSLTLDTWTEEELRLLQKGGNENANSIWES 80

                           90       100       110
                   ....*....|....*....|....*....|....
gi 1207114658  101 HLPENFRRPQTD---QAVEFFIRDKYERKKYYDK 131
Cdd:smart00105  81 NLDDFSLKPPDDddqQKYESFIAAKYEEKLFVPP 114

ADP-ribosylation factor GTPase-activating protein AGD10; Provisional

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  10 AQKLNEQhQAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSM 89
Cdd:PLN03114    3 SENLNDK-ISVFKKLKAKSDNKICFDCNAKNPTWASVTYGIFLCIDCSAVHRSLGVHISFVRSTNLDSWSSEQLKMMIYG 81

                          90
                  ....*....|..
gi 1207114658  90 GNTKARQLYEAH 101
Cdd:PLN03114   82 GNNRAQVFFKQY 93

polyadenylate binding protein, human types 1, 2, 3, 4 family; These eukaryotic proteins recognize the poly-A of mRNA and consists of four tandem RNA recognition domains at the N-terminus (rrm: pfam00076) followed by a PABP-specific domain (pfam00658) at the C-terminus. The protein is involved in the transport of mRNA's from the nucleus to the cytoplasm. There are four paralogs in Homo sapiens which are expressed in testis, platelets, broadly expressed and of unknown tissue range.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658 329 QQPAQATAMFMgPSQMQFPAQPQGNfqAFPGMGGAMPpttmmgaVMGQGGAMM--GQNTGMMVGMTMPNGFMGNAQPGVM 406
Cdd:TIGR01628 366 QRRAHLQDQFM-QLQPRMRQLPMGS--PMGGAMGQPP-------YYGQGPQQQfnGQPLGWPRMSMMPTPMGPGGPLRPN 435

                          90       100
                  ....*....|....*....|....*..
gi 1207114658 407 GLAPgmMGPQGMVPPQNMYAMQPGQQG 433
Cdd:TIGR01628 436 GLAP--MNAVRAPSRNAQNAAQKPPMQ 460

Stromal membrane-associated proteins; a subfamily of the ArfGAP family; The SMAP subfamily of Arf GTPase-activating proteins consists of the two structurally-related members, SMAP1 and SMAP2. Each SMAP member exhibits common and distinct functions in vesicle trafficking. They both bind to clathrin heavy chain molecules and are involved in the trafficking of clathrin-coated vesicles. SMAP1 preferentially exhibits GAP toward Arf6, while SMAP2 prefers Arf1 as a substrate. SMAP1 is involved in Arf6-dependent vesicle trafficking, but not Arf6-mediated actin cytoskeleton reorganization, and regulates clathrin-dependent endocytosis of the transferrin receptors and E-cadherin. SMAP2 regulates Arf1-dependent retrograde transport of TGN38/46 from the early endosome to the trans-Golgi network (TGN). SMAP2 has the Clathrin Assembly Lymphoid Myeloid (CALM)-binding domain, but SMAP1 does not.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  21 LSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:cd08839     1 LAKLLREEDNKYCADCGAKGPRWASWNLGVFICIRCAGIHRNLGVHISKVKSVNLDSWTPEQVQSMQEMGNARANAYYEA 80

                          90       100
                  ....*....|....*....|...
gi 1207114658 101 HLPENFRRPQTDQAVEFFIRDKY 123
Cdd:cd08839    81 NLPDGFRRPQTDSALENFIRDKY 103

GTPase-activating protein (GAP) for the ADP ribosylation factors (ARFs); ArfGAPs are a family of proteins containing an ArfGAP catalytic domain that induces the hydrolysis of GTP bound to the small guanine nucleotide-binding protein Arf, a member of the Ras superfamily of GTPases. Like all GTP-binding proteins, Arf proteins function as molecular switches, cycling between GTP (active-membrane bound) and GDP (inactive-cytosolic) form. Conversion to the GTP-bound form requires a guanine nucleotide exchange factor (GEF), whereas conversion to the GDP-bound form is catalyzed by a GTPase activating protein (GAP). In that sense, ArfGAPs were originally proposed to function as terminators of Arf signaling, which is mediated by regulating Arf family GTP-binding proteins. However, recent studies suggest that ArfGAPs can also function as Arf effectors, independently of their GAP enzymatic activity to transduce signals in cells. The ArfGAP domain contains a C4-type zinc finger motif and a conserved arginine that is required for activity, within a specific spacing (CX2CX16CX2CX4R). ArfGAPs, which have multiple functional domains, regulate the membrane trafficking and actin cytoskeleton remodeling via specific interactions with signaling lipids such as phosphoinositides and trafficking proteins, which consequently affect cellular events such as cell growth, migration, and cancer invasion. The ArfGAP family, which includes 31 human ArfGAP-domain containing proteins, is divided into 10 subfamilies based on domain structure and sequence similarity. The ArfGAP nomenclature is mainly based on the protein domain structure. For example, ASAP1 contains ArfGAP, SH3, ANK repeat and PH domains; ARAPs contain ArfGAP, Rho GAP, ANK repeat and PH domains; ACAPs contain ArfGAP, BAR (coiled coil), ANK repeat and PH domains; and AGAPs contain Arf GAP, GTP-binding protein-like, ANK repeat and PH domains. Furthermore, the ArfGAPs can be classified into two major types of subfamilies, according to the overall domain structure: the ArfGAP1 type includes 6 subfamilies (ArfGAP1, ArfGAP2/3, ADAP, SMAP, AGFG, and GIT), which contain the ArfGAP domain at the N-terminus of the protein; and the AZAP type includes 4 subfamilies (ASAP, ACAP, AGAP, and ARAP), which contain an ArfGAP domain between the PH and ANK repeat domains.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  21 LSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:cd08204     1 LEELLKLPGNKVCADCGAPDPRWASINLGVFICIRCSGIHRSLGVHISKVRSLTLDSWTPEQVELMKAIGNARANAYYEA 80

                          90       100
                  ....*....|....*....|....*.
gi 1207114658 101 HLPENFRRP---QTDQAVEFFIRDKY 123
Cdd:cd08204    81 NLPPGFKKPtpdSSDEEREQFIRAKY 106

ArfGap with dual PH domains; The ADAP subfamily, ArfGAPs with dual pleckstrin homology (PH) domains, includes two members: ADAP1 and ADAP2. Both ADAP1 (also known as centaurin-alpha1, p42(IP4), or PIP3BP) and ADAP2 (centaurin-alpha2) display a GTPase-activating protein (GAP) activity toward Arf6 (ADP-ribosylation factor 6), which is involved in protein trafficking that regulates endocytic recycling, cytoskeleton remodeling, and neuronal differentiation. ADAP2 has high sequence similarity to the ADAP1 and they both contain a ArfGAP domain at the N-terminus, followed by two PH domains. However, ADAP1, unlike ADAP2, contains a putative N-terminal nuclear localization signal. The PH domains of ADAP1bind to the two second messenger molecules phosphatidylinositol 3,4,5-trisphosphate (PI(3,4,5)P3) and inositol 1,3,4,5-tetrakisphosphate (I(1,3,4,5)P4) with identical high affinity, whereas those of ADAP2 specifically binds phosphatidylinositol 3,4-bisphosphate (PI(3,4)P2) and PI(3,4,5)P3, which are produced by activated phosphatidylinositol 3-kinase. ADAP1 is predominantly expressed in the brain neurons, while ADAP2 is broadly expressed, including the adipocytes, heart, and skeletal muscle but not in the brain. The limited distribution and high expression of ADAP1 in the brain indicates that ADAP1 is important for neuronal functions. ADAP1 has been shown to highly expressed in the neurons and plagues of Alzheimer's disease patients. In other hand, ADAP2 gene deletion has been shown to cause circulatory deficiencies and heart shape defects in zebrafish, indicating that ADAP2 has a vital role in heart development. Taken together, the hemizygous deletion of ADAP2 gene may be contributing to the cardiovascular malformation in patients with neurofibromatosis type 1 (NF1) microdeletions.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  14 NEQHQAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTK 93
Cdd:cd08832     1 AERNKKRLLELLKLPGNNTCADCGAPDPEWASYNLGVFICLDCSGIHRSLGTHISKVKSLRLDNWDDSQVEFMEENGNEK 80

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1207114658  94 ARQLYEAHLPENFRRPQ-TDQAV--EFFIRDKY 123
Cdd:cd08832    81 AKAKYEAHVPAFYRRPTpTDPQVlrEQWIRAKY 113

GTPase-activating protein that regulates ARFs (ADP-ribosylation factors), involved in ARF-mediated vesicular transport [Intracellular trafficking and secretion];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  12 KLNEQHQAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGN 91
Cdd:COG5347     2 STKSEDRKLLKLLKSDSSNKKCADCGAPNPTWASVNLGVFLCIDCAGVHRSLGVHISKVKSLTLDNWTEEELRRMEVGGN 81

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1207114658  92 TKARQLYEAHLPENFRRPQ----TDQAVEFFIRDKYERKKY-YDKNSVNGAIKSSDAALPSVSSPSS 153
Cdd:COG5347    82 SNANRFYEKNLLDQLLLPIkakyDSSVAKKYIRKKYELKKFiDDSSSPSDFSSFSASSTRTVDSVDD 148

Arf1 GTPase-activating protein 2/3-like; ArfGAP (ADP Ribosylation Factor GTPase Activating Protein) domain is a part of ArfGap1-like proteins that play a crucial role in controlling of membrane trafficking, particularly in the formation of COPI (coat protein complex I)-coated vesicles on Golgi membranes. The ArfGAP1 protein subfamily consists of three members: ArfGAP1 (Gcs1p in yeast), ArfGAP2 and ArfGAP3 (both are homologs of yeast Glo3p). ArfGAP2/3 are closely related, but with little similarity to ArfGAP1, except the catalytic ArfGAP domain. They promote hydrolysis of GTP bound to the small G protein ADP-ribosylation factor 1 (Arf1), which leads to the dissociation of coat proteins from Golgi-derived membranes and vesicles. Dissociation of the coat proteins is required for the fusion of these vesicles with target compartments. Thus, the GAP catalytic activity plays a key role in the formation of COPI vesicles from Golgi membrane. In contrast to ArfGAP1, which displays membrane curvature-dependent ArfGAP activity, ArfGAP2 and ArfGAP3 activities are dependent on coatomer (the core COPI complex) which required for efficient recruitment of ArfGAP2 and ArfGAP3 to the Golgi membrane. Accordingly, ArfGAP2/3 has been implicated in coatomer-mediated protein transport between the Golgi complex and the endoplasmic reticulum. Unlike ArfGAP1, which is controlled by membrane curvature through its amphipathic lipid packing sensor (ALPS) motifs, ArfGAP2/3 do not possess ALPS motif.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  18 QAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQL 97
Cdd:cd08831     3 DAIFKKLRSKPENKVCFDCGAKNPTWASVTFGVFLCLDCSGVHRSLGVHISFVRSTNLDSWTPEQLRRMKVGGNAKAREF 82

                  ....
gi 1207114658  98 YEAH 101
Cdd:cd08831    83 FKQH 86

ArfGAP domain of ASAP (Arf GAP, SH3, ANK repeat and PH domains) subfamily of ADP-ribosylation factor GTPase-activating proteins; The ArfGAPs are a family of multidomain proteins with a common catalytic domain that promotes the hydrolysis of GTP bound to Arf, thereby inactivating Arf signaling. ASAP-subfamily GAPs include three members: ASAP1, ASAP2, ASAP3. The ASAP subfamily comprises Arf GAP, SH3, ANK repeat and PH domains. From the N-terminus, each member has a BAR, PH, Arf GAP, ANK repeat, and proline rich domains. Unlike ASAP3, ASAP1 and ASAP2 also have an SH3 domain at the C-terminus. ASAP1 and ASAP2 show strong GTPase-activating protein (GAP) activity toward Arf1 and Arf5 and weak activity toward Arf6. ASAP1 is a target of Src and FAK signaling that regulates focal adhesions, circular dorsal ruffles (CDR), invadopodia, and podosomes. ASAP1 GAP activity is synergistically stimulated by phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphatidic acid. ASAP2 is believed to function as an ArfGAP that controls ARF-mediated vesicle budding when recruited to Golgi membranes. It also functions as a substrate and downstream target for protein tyrosine kinases Pyk2 and Src, a pathway that may be involved in the regulation of vesicular transport. ASAP3 is a focal adhesion-associated ArfGAP that functions in cell migration and invasion. Similar to ASAP1, the GAP activity of ASAP3 is strongly enhanced by PIP2 via PH domain. Like ASAP1, ASAP3 associates with focal adhesions and circular dorsal ruffles. However, unlike ASAP1, ASAP3 does not localize to invadopodia or podosomes. Both ASAP 1 and 3 have been implicated in oncogenesis, as ASAP1 is highly expressed in metastatic breast cancer and ASAP3 in hepatocellular carcinoma.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  17 HQAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQ 96
Cdd:cd08834     2 TKSIIAEVKRLPGNDVCCDCGSPDPTWLSTNLGILTCIECSGVHRELGVHVSRIQSLTLDNLGTSELLLARNLGNEGFNE 81

                          90       100       110
                  ....*....|....*....|....*....|....*
gi 1207114658  97 LYEAHLPENfRRPQTDQAVEF---FIRDKYERKKY 128
Cdd:cd08834    82 IMEANLPPG-YKPTPNSDMEErkdFIRAKYVEKKF 115

ARF1 GTPase-activating protein 1-like; ArfGAP (ADP Ribosylation Factor GTPase Activating Protein) domain is a part of ArfGap1-like proteins that play a crucial role in controlling of membrane trafficking, particularly in the formation of COPI (coat protein complex I)-coated vesicles on Golgi membranes. The ArfGAP1 protein subfamily consists of three members: ArfGAP1 (Gcs1p in yeast), ArfGAP2 and ArfGAP3 (both are homologs of yeast Glo3p). ArfGAP2/3 are closely related, but with little similarity to ArfGAP1, except the catalytic ArfGAP domain. They promote hydrolysis of GTP bound to the small G protein ADP-ribosylation factor 1 (Arf1), which leads to the dissociation of coat proteins from Golgi-derived membranes and vesicles. Dissociation of the coat proteins is required for the fusion of these vesicles with target compartments. Thus, the GAP catalytic activity plays a key role in the formation of COPI vesicles from Golgi membrane. In contrast to ArfGAP1, which displays membrane curvature-dependent ArfGAP activity, ArfGAP2 and ArfGAP3 activities are dependent on coatomer (the core COPI complex) which required for efficient recruitment of ArfGAP2 and ArfGAP3 to the Golgi membrane. Accordingly, ArfGAP2/3 has been implicated in coatomer-mediated protein transport between the Golgi complex and the endoplasmic reticulum. Unlike ArfGAP1, which is controlled by membrane curvature through its amphipathic lipid packing sensor (ALPS) motifs, ArfGAP2/3 do not possess ALPS motif.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  18 QAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQL 97
Cdd:cd08959     2 RAVFKKLRSKPENKVCFDCGAKNPQWASVTYGIFICLDCSGVHRGLGVHISFVRSTTMDKWTEEQLRKMKVGGNANAREF 81

                  ....
gi 1207114658  98 YEAH 101
Cdd:cd08959    82 FKQH 85

ArfGAP domain of ACAP1 (ArfGAP with Coiled-coil, ANK repeat and PH domains 1); ACAP1 belongs to the ACAP subfamily of GAPs (GTPase-activating proteins) for the small GTPase Arf (ADP-ribosylation factor). ACAP subfamily of ArfGAPs are composed of Coiled coli (BAR, Bin-Amphiphysin-Rvs), PH, ArfGAP and ANK repeats domains. ACAP1 (centaurin beta1) and ACAP2 centaurin beta2) have a GAP (GTPase-activating protein) activity preferentially toward Arf6, which regulates endocytic recycling. Both ACAP1/2 are activated by are activated by the phosphoinositides, PI(4,5)P2 and PI(3,5)P2. ACAP1 binds specifically with recycling cargo proteins such as transferrin receptor (TfR) and cellubrevin. Thus, ACAP1 promotes cargo sorting to enhance TfR recycling from the recycling endosome. In addition, phosphorylation of ACAP by Akt, a serine/threonine protein kinase, regulates the recycling of integrin beta1 to control cell migration. In contrast, ACAP2 does not exhibit a similar interaction with the recycling cargo proteins. It has been shown that ACAP2 functions both as an effector of Ras-related protein Rab35 and as an Arf6-GTPase-activating protein (GAP) during neurite outgrowth of PC12 cells. Moreover, ACAP2, together with Rab35, regulates phagocytosis in mammalian macrophages. ACAP3 also positively regulates neurite outgrowth through its GAP activity specific to Arf6 in mouse hippocampal neurons.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  18 QAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQL 97
Cdd:cd08852     1 GHAVAQVQSVDGNAQCCDCREPAPEWASINLGVTLCIQCSGIHRSLGVHFSKVRSLTLDSWEPELVKLMCELGNVIINQI 80

                          90       100       110
                  ....*....|....*....|....*....|....*...
gi 1207114658  98 YEAHLPE-NFRRPQ---TDQAVEFFIRDKYERKKYYDK 131
Cdd:cd08852    81 YEARIEAmAIKKPGpssSRQEKEAWIRAKYVEKKFITK 118

ArfGAP with GTPase domain, ANK repeat and PH domain 3; The AGAP subfamily of ADP-ribosylation factor GTPase-activating proteins (Arf GAPs) includes three members: AGAP1-3. In addition to the Arf GAP domain, AGAP proteins contain GTP-binding protein-like, ANK repeat and pleckstrin homology (PH) domains. AGAP3 exists as a component of the NMDA receptor complex that regulates Arf6 and Ras/ERK signaling pathways. Moreover, AGAP3 regulates AMPA receptor trafficking through the ArfGAP domain. Together, AGAP3 is believed to involve in linking NMDA receptor activation to AMPA receptor trafficking. AGAP1 and AGAP2 have phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2)-mediated GTPase-activating protein (GAP) activity preferentially toward Arf1, and function in the endocytic system. AGAP1 and AGAP2 independently regulate AP-3 endosomes and AP-1/Rab4 fast recycling endosomes, respectively. AGAP1, via its PH domain, directly interacts with the adapter protein 3 (AP-3), which is a coat protein involved in trafficking in the endosomal-lysosomal system, and regulates AP-3-dependent trafficking. In other hand, AGAP2 specifically binds the clathrin adaptor protein AP-1 and regulates the AP-1/Rab-4 dependent endosomal trafficking. AGAP2 is overexpressed in different human cancers including prostate carcinoma and glioblastoma, and promotes cancer cell invasion.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  30 NKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEAHLpENFRRP 109
Cdd:cd08855    14 NSFCIDCDAPNPDWASLNLGALMCIECSGIHRNLGTHLSRVRSLDLDDWPVELSMVMTAIGNAMANSVWEGAL-DGYSKP 92

                          90
                  ....*....|....*...
gi 1207114658 110 QTD---QAVEFFIRDKYE 124
Cdd:cd08855    93 GPDstrEEKERWIRAKYE 110

ArfGAP with GTPase domain, ANK repeat and PH domain 2; The AGAP subfamily of ADP-ribosylation factor GTPase-activating proteins (Arf GAPs) includes three members: AGAP1-3. In addition to the Arf GAP domain, AGAP proteins contain GTP-binding protein-like, ANK repeat and pleckstrin homology (PH) domains. AGAP1 and AGAP2 have phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2)-mediated GTPase-activating protein (GAP) activity preferentially toward Arf1, and function in the endocytic system. AGAP1 and AGAP2 independently regulate AP-3 endosomes and AP-1/Rab4 fast recycling endosomes, respectively. AGAP1, via its PH domain, directly interacts with the adapter protein 3 (AP-3), which is a coat protein involved in trafficking in the endosomal-lysosomal system, and regulates AP-3-dependent trafficking. In other hand, AGAP2 specifically binds the clathrin adaptor protein AP-1 and regulates the AP-1/Rab-4 dependent endosomal trafficking. AGAP2 is overexpressed in different human cancers including prostate carcinoma and glioblastoma, and promotes cancer cell invasion. AGAP3 exists as a component of the NMDA receptor complex that regulates Arf6 and Ras/ERK signaling pathways. Moreover, AGAP3 regulates AMPA receptor trafficking through the ArfGAP domain. Together, AGAP3 is believed to involve in linking NMDA receptor activation to AMPA receptor trafficking.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  30 NKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEAHlPENFRRP 109
Cdd:cd08853    13 NSHCVDCETQNPKWASLNLGVLMCIECSGIHRNLGTHLSRVRSLDLDDWPVELRKVMSSIGNELANSIWEGS-SQGQTKP 91

                          90
                  ....*....|....*...
gi 1207114658 110 QTD---QAVEFFIRDKYE 124
Cdd:cd08853    92 SSDstrEEKERWIRAKYE 109

ArfGap with Rho-Gap domain, ANK repeat and PH domain-containing proteins; The ARAP subfamily includes three members, ARAP1-3, and belongs to the ADP-ribosylation factor GTPase-activating proteins (Arf GAPs) family of proteins that promotes the hydrolysis of GTP bound to Arf, thereby inactivating Arf signaling. The function of Arfs is dependent on GAPs and guanine nucleotide exchange factors (GEFs), which allow Arfs to cycle between the GDP-bound and GTP-bound forms. In addition to the Arf GAP domain, ARAPs contain the SAM (sterile-alpha motif) domain, 5 pleckstrin homology (PH) domains, the Rho-GAP domain, the Ras-association domain, and ANK repeats. ARAPs show phosphatidylinositol 3,4,5-trisphosphate (PI(3,4,5)P3)-dependent GAP activity toward Arf6. ARAPs play important roles in endocytic trafficking, cytoskeleton reorganization in response to growth factors stimulation, and focal adhesion dynamics.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  19 AILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQ--WTPEQIQSVQSMGNTKARQ 96
Cdd:cd08837     2 EVAEKIWSNPANRFCADCGAPDPDWASINLCVVICKQCAGEHRSLGSNISKVRSLKMDTkvWTEELVELFLKLGNDRANR 81

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1207114658  97 LYEAHLPENFR-RPQTDQAV-EFFIRDKYERKKY 128
Cdd:cd08837    82 FWAANLPPSEAlHPDADSEQrREFITAKYREGKY 115

ADAP1 GTPase activating protein for Arf, with dual PH domains; The ADAP subfamily, ArfGAPs with dual pleckstrin homology (PH) domains, includes two members: ADAP1 and ADAP2. Both ADAP1 (also known as centaurin-alpha1, p42(IP4), or PIP3BP) and ADAP2 (centaurin-alpha2) display a GTPase-activating protein (GAP) activity toward Arf6 (ADP-ribosylation factor 6), which is involved in protein trafficking that regulates endocytic recycling, cytoskeleton remodeling, and neuronal differentiation. ADAP2 has high sequence similarity to the ADAP1 and they both contain a ArfGAP domain at the N-terminus, followed by two PH domains. However, ADAP1, unlike ADAP2, contains a putative N-terminal nuclear localization signal. The PH domains of ADAP1bind to the two second messenger molecules phosphatidylinositol 3,4,5-trisphosphate (PI(3,4,5)P3) and inositol 1,3,4,5-tetrakisphosphate (I(1,3,4,5)P4) with identical high affinity, whereas those of ADAP2 specifically binds phosphatidylinositol 3,4-bisphosphate (PI(3,4)P2) and PI(3,4,5)P3, which are produced by activated phosphatidylinositol 3-kinase. ADAP1 is predominantly expressed in the brain neurons, while ADAP2 is broadly expressed, including the adipocytes, heart, and skeletal muscle but not in the brain. The limited distribution and high expression of ADAP1 in the brain indicates that ADAP1 is important for neuronal functions. ADAP1 has been shown to highly expressed in the neurons and plagues of Alzheimer's disease patients. In other hand, ADAP2 gene deletion has been shown to cause circulatory deficiencies and heart shape defects in zebrafish, indicating that ADAP2 has a vital role in heart development. Taken together, the hemizygous deletion of ADAP2 gene may be contributing to the cardiovascular malformation in patients with neurofibromatosis type 1 (NF1) microdeletions.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  15 EQHQAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGvHISRVKSVNLDQWTPEQIQSVQSMGNTKA 94
Cdd:cd08843     2 KERRRAVLELLQRPGNARCADCGAPDPDWASYTLGVFICLSCSGIHRNIP-QVSKVKSVRLDAWEEAQVEFMASHGNDAA 80

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1207114658  95 RQLYEAHLPENFRRPQTDQAVefFIRDKYERKKY 128
Cdd:cd08843    81 RARFESKVPSFYYRPTPSDCQ--LLREQWIRAKY 112

ArfGAP domain of ASAP3 (ArfGAP with ANK repeat and PH domain-containing protein 3); The ArfGAPs are a family of multidomain proteins with a common catalytic domain that promotes the hydrolysis of GTP bound to Arf, thereby inactivating Arf signaling. ASAP-subfamily GAPs include three members: ASAP1, ASAP2, ASAP3. The ASAP subfamily comprises Arf GAP, SH3, ANK repeat and PH domains. From the N-terminus, each member has a BAR, PH, Arf GAP, ANK repeat, and proline rich domains. Unlike ASAP1 and ASAP2, ASAP3 do not have an SH3 domain at the C-terminus. ASAP1 and ASAP2 show strong GTPase-activating protein (GAP) activity toward Arf1 and Arf5 and weak activity toward Arf6. ASAP1 is a target of Src and FAK signaling that regulates focal adhesions, circular dorsal ruffles (CDR), invadopodia, and podosomes. ASAP1 GAP activity is synergistically stimulated by phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphatidic acid. ASAP2 is believed to function as an ArfGAP that controls ARF-mediated vesicle budding when recruited to Golgi membranes. It also functions as a substrate and downstream target for protein tyrosine kinases Pyk2 and Src, a pathway that may be involved in the regulation of vesicular transport. ASAP3 is a focal adhesion-associated ArfGAP that functions in cell migration and invasion. Similar to ASAP1, the GAP activity of ASAP3 is strongly enhanced by PIP2 via PH domain. Like ASAP1, ASAP3 associates with focal adhesions and circular dorsal ruffles. However, unlike ASAP1, ASAP3 does not localize to invadopodia or podosomes. ASAP 1 and 3 have been implicated in oncogenesis, as ASAP1 is highly expressed in metastatic breast cancer and ASAP3 in hepatocellular carcinoma.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  30 NKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEAHLPENFR-- 107
Cdd:cd17900    15 NSQCCDCGAPDPTWLSTNLGILTCIECSGIHRELGVRYSRIQSLTLDLLSTSELLLAVSMGNTRFNEVMEATLPAHGGpk 94

                          90       100
                  ....*....|....*....|....*...
gi 1207114658 108 -RPQTDQAV-EFFIRDKYERKKYYDKNS 133
Cdd:cd17900    95 pSAESDMGTrKDYIMAKYVEHRFVRKRC 122

ArfGAP domain of ASAP1 (ArfGAP with SH3 domain, ANK repeat and PH domain-containing protein 1); The ArfGAPs are a family of multidomain proteins with a common catalytic domain that promotes the hydrolysis of GTP bound to Arf, thereby inactivating Arf signaling. ASAP-subfamily GAPs include three members: ASAP1, ASAP2, ASAP3. The ASAP subfamily comprises Arf GAP, SH3, ANK repeat and PH domains. From the N-terminus, each member has a BAR, PH, Arf GAP, ANK repeat, and proline rich domains. Unlike ASAP3, ASAP1 and ASAP2 also have an SH3 domain at the C-terminus. ASAP1 and ASAP2 show strong GTPase-activating protein (GAP) activity toward Arf1 and Arf5 and weak activity toward Arf6. ASAP1 is a target of Src and FAK signaling that regulates focal adhesions, circular dorsal ruffles (CDR), invadopodia, and podosomes. ASAP1 GAP activity is synergistically stimulated by phosphatidylinositol 4,5-bisphosphate (PIP2) and phosphatidic acid. ASAP2 is believed to function as an ArfGAP that controls ARF-mediated vesicle budding when recruited to Golgi membranes. It also functions as a substrate and downstream target for protein tyrosine kinases Pyk2 and Src, a pathway that may be involved in the regulation of vesicular transport. ASAP3 is a focal adhesion-associated ArfGAP that functions in cell migration and invasion. Similar to ASAP1, the GAP activity of ASAP3 is strongly enhanced by PIP2 via PH domain. Like ASAP1, ASAP3 associates with focal adhesions and circular dorsal ruffles. However, unlike ASAP1, ASAP3 does not localize to invadopodia or podosomes. ASAP 1 and 3 have been implicated in oncogenesis, as ASAP1 is highly expressed in metastatic breast cancer and ASAP3 in hepatocellular carcinoma.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  18 QAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQL 97
Cdd:cd08848     3 KAIIDDVQRLPGNEVCCDCGSPDPTWLSTNLGILTCIECSGIHREMGVHISRIQSLELDKLGTSELLLAKNVGNNSFNDI 82

                          90       100       110
                  ....*....|....*....|....*....|....
gi 1207114658  98 YEAHLPENfrRPQTDQAVEFFIRDKYERKKYYDK 131
Cdd:cd08848    83 MEGNLPSP--SPKPSPSSDMTARKEYITAKYVEH 114

ArfGap with Rho-Gap domain, ANK repeat and PH domain-containing protein 3; The ARAP subfamily includes three members, ARAP1-3, and belongs to the ADP-ribosylation factor GTPase-activating proteins (Arf GAPs) family of proteins that promotes the hydrolysis of GTP bound to Arf, thereby inactivating Arf signaling. The function of Arfs is dependent on GAPs and guanine nucleotide exchange factors (GEFs), which allow Arfs to cycle between the GDP-bound and GTP-bound forms. In addition to the Arf GAP domain, ARAPs contain the SAM (sterile-alpha motif) domain, 5 pleckstrin homology (PH) domains, the Rho-GAP domain, the Ras-association domain, and ANK repeats. ARAPs show phosphatidylinositol 3,4,5-trisphosphate (PI(3,4,5)P3)-dependent GAP activity toward Arf6. ARAPs play important roles in endocytic trafficking, cytoskeleton reorganization in response to growth factors stimulation, and focal adhesion dynamics. ARAP3 possesses a unique dual-specificity GAP activity for Arf6 and RhoA regulated by PI(3,4,5)P3 and a small GTPase Rap1-GTP. The RhoGAP activity of ARAP3 is enhanced by direct binding of Rap1-GTP to the Ras-association (RA) domain. ARAP3 is involved in regulation of cell shape and adhesion.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  30 NKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQ--WTPEQIQSVQSMGNTKARQLYEAHLP--EN 105
Cdd:cd17902    13 NRFCADCHASSPDWASINLCVVICKQCAGQHRSLGSGISKVQSLKLDTsvWSNEIVQLFIVLGNDRANRFWAARLPasEA 92

                          90       100
                  ....*....|....*....|...
gi 1207114658 106 FRRPQTDQAVEFFIRDKYERKKY 128
Cdd:cd17902    93 LHPDATPEQRREFISRKYREGRF 115

GIT2 GTPase activating protein for Arf; The GIT (G-protein coupled receptor kinase-interacting protein) subfamily includes GIT1 and GIT2, which have three ANK repeats, a Spa-homology domain (SHD), a coiled-coil domain and a C-terminal paxillin-binding site (PBS). The GIT1/2 proteins are GTPase-activating proteins that function as an inactivator of Arf signaling, and interact with the PIX/Cool family of Rac/Cdc42 guanine nucleotide exchange factors (GEFs). Unlike other ArfGAPs, GIT and PIX (Pak-interacting exchange factor) proteins are tightly associated to form an oligomeric complex that acts as a scaffold and signal integrator that can be recruited for multiple signaling pathways. The GIT/PIX complex functions as a signaling scaffold by binding to specific protein partners. As a result, the complex is transported to specific cellular locations. For instance, the GIT partners paxillin or integrin-alpha4 (to focal adhesions), piccolo and liprin-alpha (to synapses), and the beta-PIX partner Scribble (to epithelial cell-cell contacts and synapses). Moreover, the GIT/PIT complex functions to integrate signals from multiple GTP-binding protein and protein kinase pathways to regulate the actin cytoskeleton and thus cell polarity, adhesion and migration.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  21 LSKMLRedDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEA 100
Cdd:cd08847     1 MSKRLR--SSEVCADCSTSDPRWASVNRGVLICDECCSVHRSLGRHISQVRHLKHTSWPPTLLQMVQTLYNNGANSIWEH 78

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1207114658 101 HL--PENF----RRPQTDQAVE----FFIRDKY 123
Cdd:cd08847    79 SLldPASImsgkRKANPQDKVHpnkaEFIRAKY 111

Arf1 GTPase-activating protein 2; ArfGAP (ADP Ribosylation Factor GTPase Activating Protein) domain is a part of ArfGap1-like proteins that play a crucial role in controlling of membrane trafficking, particularly in the formation of COPI (coat protein complex I)-coated vesicles on Golgi membranes. The ArfGAP1 protein subfamily consists of three members: ArfGAP1 (Gcs1p in yeast), ArfGAP2 and ArfGAP3 (both are homologs of yeast Glo3p). ArfGAP2/3 are closely related, but with little similarity to ArfGAP1, except the catalytic ArfGAP domain. They promote hydrolysis of GTP bound to the small G protein ADP-ribosylation factor 1 (Arf1), which leads to the dissociation of coat proteins from Golgi-derived membranes and vesicles. Dissociation of the coat proteins is required for the fusion of these vesicles with target compartments. Thus, the GAP catalytic activity plays a key role in the formation of COPI vesicles from Golgi membrane. In contrast to ArfGAP1, which displays membrane curvature-dependent ArfGAP activity, ArfGAP2 and ArfGAP3 activities are dependent on coatomer (the core COPI complex) which required for efficient recruitment of ArfGAP2 and ArfGAP3 to the Golgi membrane. Accordingly, ArfGAP2/3 has been implicated in coatomer-mediated protein transport between the Golgi complex and the endoplasmic reticulum. Unlike ArfGAP1, which is controlled by membrane curvature through its amphipathic lipid packing sensor (ALPS) motifs, ArfGAP2/3 do not possess ALPS motif.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  18 QAILSKMLREDDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLD-QWTPEQIQSVQSMGNTKARQ 96
Cdd:cd09029     7 QTLFKRLRAIPTNKACFDCGAKNPSWASITYGVFLCIDCSGVHRSLGVHLSFIRSTELDsNWNWFQLRCMQVGGNANATA 86

                  ....*
gi 1207114658  97 LYEAH 101
Cdd:cd09029    87 FFRQH 91

ArfGAP domain of AGFG1 (ArfGAP domain and FG repeat-containing protein 1); The ArfGAP domain and FG repeat-containing proteins (AFGF) subfamily of Arf GTPase-activating proteins consists of the two structurally-related members: AGFG1 and AGFG2. AGFG1 (alias: HIV-1 Rev binding protein, HRB; Rev interacting protein, RIP; Rev/Rex activating domain-binding protein, RAB) and AGFG2 are involved in the maintenance and spread of immunodeficiency virus type 1 (HIV-1) infection. The ArfGAP domain of AGFG1 is related to nucleoporins, which is a class of proteins that mediate nucleocytoplasmic transport. AGFG1 plays a role in the Rev export pathway, which mediates the nucleocytoplasmic transfer of proteins and RNAs, possibly together by the nuclear export receptor CRM1. In humans, the presence of the FG repeat motifs (11 in AGFG1 and 7 in AGFG2) are thought to be required for these proteins to act as HIV-1 Rev cofactors. Hence, AGFG1 promotes movement of Rev-responsive element-containing RNAs from the nuclear periphery to the cytoplasm, which is an essential step for HIV-1 replication.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  23 KMLRE----DDNKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHiSRVKSVNLDQWTPEQIQSVQSMGNTKARQLY 98
Cdd:cd08857     3 KMLREmtslPHNRKCFDCDQRGPTYANMTVGSFVCTSCSGILRGLNPP-HRVKSISMTTFTQQEIEFLQKHGNEVCKQIW 81

                          90       100       110
                  ....*....|....*....|....*....|....*...
gi 1207114658  99 -------EAHLPEnFRRPQTdqaVEFFIRDKYERKKYY 129
Cdd:cd08857    82 lglfddrSSAIPD-FRDPQK---VKEFLQEKYEKKRWY 115

GIT1 GTPase activating protein for Arf; The GIT (G-protein coupled receptor kinase-interacting protein) subfamily includes GIT1 and GIT2, which have three ANK repeats, a Spa-homology domain (SHD), a coiled-coil domain and a C-terminal paxillin-binding site (PBS). The GIT1/2 proteins are GTPase-activating proteins that function as an inactivator of Arf signaling, and interact with the PIX/Cool family of Rac/Cdc42 guanine nucleotide exchange factors (GEFs). Unlike other ArfGAPs, GIT and PIX (Pak-interacting exchange factor) proteins are tightly associated to form an oligomeric complex that acts as a scaffold and signal integrator that can be recruited for multiple signaling pathways. The GIT/PIX complex functions as a signaling scaffold by binding to specific protein partners. As a result, the complex is transported to specific cellular locations. For instance, the GIT partners paxillin or integrin-alpha4 (to focal adhesions), piccolo and liprin-alpha (to synapses), and the beta-PIX partner Scribble (to epithelial cell-cell contacts and synapses). Moreover, the GIT/PIT complex functions to integrate signals from multiple GTP-binding protein and protein kinase pathways to regulate the actin cytoskeleton and thus cell polarity, adhesion and migration.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  33 CADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHISRVKSVNLDQWTPEQIQSVQSMGNTKARQLYEAHL-----PENFR 107
Cdd:cd08846    11 CADCSAPDPGWASINRGVLICDECCSVHRSLGRHISIVKHLRHSAWPPTLLQMVHTLASNGANSIWEHSLldpaqVQSGR 90

                          90       100
                  ....*....|....*....|.
gi 1207114658 108 RPQTDQAVEFFIRDKYERKKY 128
Cdd:cd08846    91 RKANPQDKVHPTKSEFIRAKY 111

ArfGAP domain of AGFG2 (ArfGAP domain and FG repeat-containing protein 2); The ArfGAP domain and FG repeat-containing proteins (AFGF) subfamily of Arf GTPase-activating proteins consists of the two structurally-related members: AGFG1 and AGFG2. AGFG2 is a member of the HIV-1 Rev binding protein (HRB) family and contains one Arf-GAP zinc finger domain, several Phe-Gly (FG) motifs, and four Asn-Pro-Phe (NPF) motifs. AGFG2 interacts with Eps15 homology (EH) domains and plays a role in the Rev export pathway, which mediates the nucleocytoplasmic transfer of proteins and RNAs. In humans, the presence of the FG repeat motifs (11 in AGFG1 and 7 in AGFG2) are thought to be required for these proteins to act as HIV-1 Rev cofactors. Hence, AGFG promotes movement of Rev-responsive element-containing RNAs from the nuclear periphery to the cytoplasm, which is an essential step for HIV-1 replication.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658  30 NKYCADCEAKGPRWASWNLGVFICIRCAGIHRNLGVHiSRVKSVNLDQWTPEQIQSVQSMGNTKARQLY------EAHLP 103
Cdd:cd17903    14 NRHCFECAQRGVTYVDITVGSFVCTTCSGLLRGLNPP-HRVKSISMTTFTEPEVLFLQARGNEVCRKIWlglfdaRTSLI 92

                          90       100
                  ....*....|....*....|....*.
gi 1207114658 104 ENFRRPQTdqaVEFFIRDKYERKKYY 129
Cdd:cd17903    93 PDSRDPQK---VKEFLQEKYEKKRWY 115

ARC105 or Med15 subunit of Mediator complex non-fungal; The approx. 70 residue Med15 domain of the ARC-Mediator co-activator is a three-helix bundle with marked similarity to the KIX domain. The sterol regulatory element binding protein (SREBP) family of transcription activators use the ARC105 subunit to activate target genes in the regulation of cholesterol and fatty acid homeostasis. In addition, Med15 is a critical transducer of gene activation signals that control early metazoan development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658 324 SSTVPQQPAQATAMFMGPSQMQFPAQPQGNFQAFPGMGGAMPpttMMGAVMGQGGAMMGQNTGMMVGMTMPNGFMGNAQP 403
Cdd:pfam09606  56 KAAQQQQPQGGQGNGGMGGGQQGMPDPINALQNLAGQGTRPQ---MMGPMGPGPGGPMGQQMGGPGTASNLLASLGRPQM 132

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1207114658 404 --GVMGLAPGMMGPQGMVPPQNMYAMQPGQQGQWNMAQINQQMSGMNLNGSGAPMAFGQPGAPMGGWVAPPSGQ 475
Cdd:pfam09606 133 pmGGAGFPSQMSRVGRMQPGGQAGGMMQPSSGQPGSGTPNQMGPNGGPGQGQAGGMNGGQQGPMGGQMPPQMGV 206

ARC105 or Med15 subunit of Mediator complex non-fungal; The approx. 70 residue Med15 domain of the ARC-Mediator co-activator is a three-helix bundle with marked similarity to the KIX domain. The sterol regulatory element binding protein (SREBP) family of transcription activators use the ARC105 subunit to activate target genes in the regulation of cholesterol and fatty acid homeostasis. In addition, Med15 is a critical transducer of gene activation signals that control early metazoan development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1207114658 328 PQQPAQATAMFMGPSQMQFPAQPQGNFQAFPGMGGAMPPTT----MMGAVMGQGGAMMGQNTGMMVGMTMPNGFMGNAQP 403
Cdd:pfam09606 248 PQQQGQQSQLGMGINQMQQMPQGVGGGAGQGGPGQPMGPPGqqpgAMPNVMSIGDQNNYQQQQTRQQQQQQGGNHPAAHQ 327

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1207114658 404 GVMGLAPGMMGPQGMVPPQNMY-AMQPGQQGQWNMAQINQQMSGMNLNGSGAPMAFGQPGAPMGGWVAPPSGQTLSTQ 480
Cdd:pfam09606 328 QQMNQSVGQGGQVVALGGLNHLeTWNPGNFGGLGANPMQRGQPGMMSSPSPVPGQQVRQVTPNQFMRQSPQPSVPSPQ 405