FYVE domain found in RUN and FYVE domain-containing protein 2 (RUFY2) and similar proteins; RUFY2, also termed Rab4-interacting protein related, is a novel embryonic factor that contains an N-terminal RUN domain and a C-terminal FYVE domain with two coiled-coil domains in-between. It is present in the nucleus at early stages of embryonic development. It may have both endosomal functions in the cytoplasm and nuclear functions.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 966963267 568 GLVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALLIQRCSSN 638
Cdd:cd15759    1 GQVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHAMLIQRCSSN 71

FYVE domain found in RUN and FYVE domain-containing protein 2 (RUFY2) and similar proteins; RUFY2, also termed Rab4-interacting protein related, is a novel embryonic factor that contains an N-terminal RUN domain and a C-terminal FYVE domain with two coiled-coil domains in-between. It is present in the nucleus at early stages of embryonic development. It may have both endosomal functions in the cytoplasm and nuclear functions.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 966963267 568 GLVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALLIQRCSSN 638
Cdd:cd15759    1 GQVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHAMLIQRCSSN 71

FYVE zinc finger; The FYVE zinc finger is named after four proteins that it has been found in: Fab1, YOTB/ZK632.12, Vac1, and EEA1. The FYVE finger has been shown to bind two Zn++ ions. The FYVE finger has eight potential zinc coordinating cysteine positions. Many members of this family also include two histidines in a motif R+HHC+XCG, where + represents a charged residue and X any residue. We have included members which do not conserve these histidine residues but are clearly related.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 966963267  570 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP---SSPKPVRVCDSCHALL 631
Cdd:pfam01363   2 VWVPDSSATVCMICSKPFTFFRRRHHCRNCGRVFCSACSSKKISLLpelGSNKPVRVCDACYDTL 66

domain involved in Ras-like GTPase signaling;

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 966963267   140 ARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMM-EEEGAVIVGLLVGLNVIDANLCVK 202
Cdd:smart00593   1 FRAWIRLALNEKLLSSWLNLLLSDEELLSKYYEPWAFLRdPEEGEQLLGLLVGLSALDFNLPVD 64

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   224 DIGNKERNVQIAAILDQKN-YVEELNRQLNTVSSLHSRVDSLEKSNTKLIEELAIAKNNIIKLQEENHQLRSENKLILMK 302
Cdd:TIGR02168  217 ELKAELRELELALLVLRLEeLREELEELQEELKEAEEELEELTAELQELEEKLEELRLEVSELEEEIEELQKELYALANE 296

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   303 TQqhlevtkvDVETELQTYKHSRQGLDEMYNEARRQLRDESQLRQDVENELAvqvsmkheielamkLLEKDIHEKQDTLI 382
Cdd:TIGR02168  297 IS--------RLEQQKQILRERLANLERQLEELEAQLEELESKLDELAEELA--------------ELEEKLEELKEELE 354

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   383 GLRQQLEEVKAINIEMYQKLQGSEDGLKEKNEIIARLEEKTNKITAAMRQLEQRLQQAEKAQMEAEDE--------DEKY 454
Cdd:TIGR02168  355 SLEAELEELEAELEELESRLEELEEQLETLRSKVAQLELQIASLNNEIERLEARLERLEDRRERLQQEieellkklEEAE 434

                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   455 LQECLSKSDSLQKQISQKEKQLVQLETDLKIEKEWRQTLQEDLQKEKDALSHLRNEtqqIISLKKEFLNLQDENQQLKKI 534
Cdd:TIGR02168  435 LKELQAELEELEEELEELQEELERLEEALEELREELEEAEQALDAAERELAQLQAR---LDSLERLQENLEGFSEGVKAL 511

                   ....*.
gi 966963267   535 YHEQEQ 540
Cdd:TIGR02168  512 LKNQSG 517

Protein of unknown function (DUF3584); This protein is found in bacteria and eukaryotes. Proteins in this family are typically between 943 to 1234 amino acids in length. This family contains a P-loop motif suggesting it is a nucleotide binding protein. It may be involved in replication.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   282 IIKLQEENHQLRSenkliLMKTQQHLEVTKVDVETELQTYKHSRQGLDEMYNEARRQLRDESQLRQDvenelavqvsmkh 361
Cdd:pfam12128  243 FTKLQQEFNTLES-----AELRLSHLHFGYKSDETLIASRQEERQETSAELNQLLRTLDDQWKEKRD------------- 304

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   362 EIELAMKLLEKDIHEKQDTLIGLRQQLEEVKAINIEMYQKLQGSEDG----LKEKNEIIARLEEKTNKITAAMRQLEQRL 437
Cdd:pfam12128  305 ELNGELSAADAAVAKDRSELEALEDQHGAFLDADIETAAADQEQLPSwqseLENLEERLKALTGKHQDVTAKYNRRRSKI 384

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   438 QQAEKAQMEAEDEDEKYLQECLSK-----SDSLQKQISQKEKQLVQLETDLKIEKE-------WRQTLQEDLQKEKDALS 505
Cdd:pfam12128  385 KEQNNRDIAGIKDKLAKIREARDRqlavaEDDLQALESELREQLEAGKLEFNEEEYrlksrlgELKLRLNQATATPELLL 464

                          250       260       270       280       290       300
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 966963267   506 HLRN---------ETQQiiSLKKEFLNLQDENQQLKKIYHEQEQALQELGNKLSESKLKIEDIKE 561
Cdd:pfam12128  465 QLENfderierarEEQE--AANAEVERLQSELRQARKRRDQASEALRQASRRLEERQSALDELEL 527

Syntaxin N-terminal domain; Three-helix domain that (in Sso1p) slows the rate of its reaction with the SNAP-25 homologue Sec9p

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   403 QGSEDGLKEKNEI---IARLEEKTNKItaamrqleQRLQQAEKAQMEAEDEDEKYLQECLSKSDSLQKQISQKEKQLVQl 479
Cdd:smart00503   1 SNLDEFFEKVEEIranIQKISQNVAEL--------QKLHEELLTPPDADKELREKLERLIDDIKRLAKEIRAKLKELEK- 71

                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   480 etdlkiekewrqtlqEDLQKEKDALSHLRNETQQIISLKKEFLNLQDENQQLKKIYHEQE 539
Cdd:smart00503  72 ---------------ENLENRASGSASDRTRKAQTEKLRKKFKEVMNEFQRLQRKYRERE 116

RUN domain found in RUN and FYVE domain-containing proteins, RUFY1, RUFY2, RUFY3 and similar proteins; This family includes RUN and FYVE domain-containing protein RUFY1, RUFY2, and RUFY3. RUFY1, also called FYVE-finger protein EIP1, or La-binding protein 1, or Rab4-interacting protein (Rabip4), or Zinc finger FYVE domain-containing protein 12 (ZFY12), a human homolog of mouse Rabip4, an effector of Rab4 GTPase that regulates recycling of endocytosed cargo. RUFY1 is an endosomal protein that functions as a dual effector of Rab4 and Rab14 and is involved in efficient recycling of transferrin (Tfn). It is a downstream effector of Etk, a downstream tyrosine kinase of PI3-kinase that is involved in regulation of vesicle trafficking. RUFY2, also called Rab4-interacting protein related, is a novel embryonic factor that is present in the nucleus at early stages of embryonic development. It may have both endosomal functions in the cytoplasm and nuclear functions. RUFY3, also called Rap2-interacting protein x (RIPx or RPIPx), or single axon-regulated protein (singar), is an N-terminal RUN domain and a C-terminal FYVE domain containing protein predominantly expressed in the brain. It suppresses formation of surplus axons for neuronal polarity. Unlike other RUFY proteins, RUFY3 can associate with the GTP-bound active form of Rab5. RUFY1, RUFY2, and RUFY3 contain an N-terminal RUN domain and a C-terminal FYVE domain with two coiled-coil domains in-between; this model represents the RUN domain.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267  45 ERANLLNMAKLSIKGLIESALSFGRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYNKTIWGPLELVEKLYPEAEEIG 124
Cdd:cd17681    1 ERRNLLNLAKLSIKELIESALSFGRTLDSDHVPLQQFFVILEHVLRHGLKVKKSFLGPNKSFWPVLEHVEKLVPEANEIT 80

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 966963267 125 ASVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANL 199
Cdd:cd17681   81 ASVRDLPGIKTPLGRARAWLRLALMQKKLADYFRALIENKDLLSEFYEPGALMMSEEAVVIAGLLVGLNVIDCNL 155

RUN domain found in RUN and FYVE domain-containing protein 3 (RUFY3) and similar proteins; RUFY3, also called Rap2-interacting protein x (RIPx or RPIPx), or single axon-regulated protein (singar), is an N-terminal RUN domain and a C-terminal FYVE domain containing protein predominantly expressed in the brain. It suppresses formation of surplus axons for neuronal polarity. Unlike other RUFY proteins, RUFY3 can associate with the GTP-bound active form of Rab5. This model represents the RUN domain of RUFY3.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267  45 ERANLLNMAKLSIKGLIESALSFGRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYNKTIWGPLELVEKLYPEAEEIG 124
Cdd:cd17696    1 ERMNLMNMAKLSIKGLIESALNLGRTLDSDYAPLQQFFVVMEHCLKHGLKAKKTFLGQNKSFWGPLELVEKLVPEAAEIT 80

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 966963267 125 ASVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANLC 200
Cdd:cd17696   81 ASVKDLPGLKTPVGRGRAWLRLALMQKKLSEYMKALINRKDLLSEFYEPNALMMEEEGAIIAGLLVGLNVIDANFC 156

FYVE domain found in RUN and FYVE domain-containing protein RUFY1, RUFY2 and similar proteins; This family includes RUN and FYVE domain-containing protein RUFY1 and RUFY2. RUFY1, also termed FYVE-finger protein EIP1, or La-binding protein 1, or Rab4-interacting protein (Rabip4), or Zinc finger FYVE domain-containing protein 12 (ZFY12), a human homologue of mouse Rabip4, an effector of Rab4 GTPase that regulates recycling of endocytosed cargo. RUFY1 is an endosomal protein that functions as a dual effector of Rab4 and Rab14 and is involved in efficient recycling of transferrin (Tfn). It is a downstream effector of Etk, a downstream tyrosine kinase of PI3-kinase that is involved in regulation of vesicle trafficking. RUFY2, also termed Rab4-interacting protein related, is a novel embryonic factor that is present in the nucleus at early stages of embryonic development. It may have both endosomal functions in the cytoplasm and nuclear functions. Both RUFY1 and RUFY2 contain an N-terminal RUN domain and a C-terminal FYVE domain with two coiled-coil domains in-between.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCH 628
Cdd:cd15721    1 WADDKEVTHCQQCEKEFSLSRRKHHCRNCGGIFCNSCSDNTMPLPSSAKPVRVCDTCY 58

RUN domain; This domain is present in several proteins that are linked to the functions of GTPases in the Rap and Rab families. They could hence play important roles in multiple Ras-like GTPase signalling pathways. The domain is comprises six conserved regions, which in some proteins have considerable insertions between them. The domain core is thought to take up a predominantly alpha fold, with basic amino acids in regions A and D possibly playing a functional role in interactions with Ras GTPases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   80 QFFVVMEHCLKHGLKV------RKSFLSYNKTIWGPLELVEKLYPEAEEIGASVRDLPGLKT---PLGRARAWLRLALMQ 150
Cdd:pfam02759   1 QLCAALEALLSHGLKRssllilRAAGLLPERSFWALLERVGKLVPPAEELLSSVQELEQIHTpysPDGRGRAWIRLALNE 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 966963267  151 KKMADYLRCLIIQRDLLSEFYEYHALMMEEEGA-VIVGLLVGLNVIDANLCVKG 203
Cdd:pfam02759  81 KLLDQWLKLLLSNKELLSEYYEPWALLADPEFGeILLGLLVGLSALDFNLCLKL 134

FYVE domain found in early endosome antigen 1 (EEA1) and similar proteins; EEA1, also termed endosome-associated protein p162, or zinc finger FYVE domain-containing protein 2, is an essential component of the endosomal fusion machinery and required for the fusion and maturation of early endosomes in endocytosis. It forms a parallel coiled-coil homodimer in cells. EEA1 serves as the p97 ATPase substrate and the p97 ATPase may regulate the size of early endosomes by governing the oligomeric state of EEA1. It can interact with the GTP-bound form of Rab22a and be involved in endosomal membrane trafficking. EEA1 also functions as an obligate scaffold for angiotensin II-induced Akt activation in early endosomes. It can be phosphorylated by p38 mitogen-activated protein kinase (MAPK) and further regulate mu opioid receptor endocytosis. EEA1 consists of an N-terminal C2H2 Zn2+ finger, four long heptad repeats, and a C-terminal region containing a calmodulin binding (IQ) motif, a Rab5 interaction site, and a FYVE domain. This model corresponds to the FYVE domain that is responsible for binding phosphatidyl inositol-3-phosphate (PtdIns3P or PI3P) on the membrane.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALL 631
Cdd:cd15730    3 WADDEEVQNCMACGKGFSVTVRKHHCRQCGNIFCNECSSKTATTPSSKKPVRVCDACFDDL 63

RUN domain; RUN domain, named after RPIP8 (Rap2 interacting protein 8), UNC-14 and NESCA (new molecule containing SH3 at the carboxyl-terminus), is a less conserved protein motif that comprises six conserved regions, which in some proteins have considerable insertions between them. The domain core is thought to take up a predominantly alpha fold, with basic amino acids in regions A and D possibly playing a functional role in interactions with Ras GTPases. RUN domains are often found in proteins linked particularly to the functions of GTPases in the Rap and Rab families, suggesting the RUN domain may be involved in Rab-mediated membrane trafficking, possibly as a Rab-binding site. RUN domain-containing proteins could hence play important roles in multiple Ras-like GTPase signalling pathways.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267  56 SIKGLIESAL-------SFGRTLDSDYPPLQQFFVVMEHCLKHGLKvRKSFLSYNKTIWGPLELVEKLYPEAEEIGA--S 126
Cdd:cd17671    2 AVKELLESFAdngeaddSAALTLTDDDPVVGRLCAALEAILSHGLK-PKRFGGGKVSFWDFLEALEKLLPAPSLKQAirD 80

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 966963267 127 VRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMM-EEEGAVIVGLLVGLNVIDANL 199
Cdd:cd17671   81 INSLSNVKTDDGRGRAWIRLALNEKSLESYLAALLSDQSLLRKYYEPWALLRdPEEAELFLSLLVGLSSLDFNL 154

FYVE domain found in protein containing both PH and FYVE domains 1 (phafin-1), 2 (phafin-2), and similar proteins; This family includes protein containing both PH and FYVE domains 1 (phafin-1) and 2 (phafin-2). Phafin-1 is a representative of a novel family of PH and FYVE domain-containing proteins called phafins. It is a ubiquitously expressed pro-apoptotic protein via translocating to lysosomes, facilitating apoptosis induction through a lysosomal-mitochondrial apoptotic pathway. Phafin-2 is a ubiquitously expressed endoplasmic reticulum-associated protein that facilitates tumor necrosis factor alpha (TNF-alpha)-triggered cellular apoptosis through endoplasmic reticulum (ER)-mitochondrial apoptotic pathway. It is an endosomal phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) effector, as well as an interactor of the endosomal-tethering protein EEA1. It regulates endosome fusion upstream of Rab5. Phafin-2 also functions as a novel regulator of endocytic epidermal growth factor receptor (EGFR) degradation through a role in endosomal fusion.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 966963267 570 VWLKDKEATHCKLCEK-EFSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCH 628
Cdd:cd15717    1 VWVPDSEAPVCMHCKKtKFTAINRRHHCRKCGAVVCGACSSKKFLLPHqSSKPLRVCDTCY 61

FYVE domain found in myotubularin-related protein 4 (MTMR4) and similar proteins; MTMR4, also termed FYVE domain-containing dual specificity protein phosphatase 2 (FYVE-DSP2), or zinc finger FYVE domain-containing protein 11, is an dual specificity protein phosphatase that specifically dephosphorylates phosphatidylinositol 3-phosphate (PtdIns3P or PI3P). It is localizes to early endosomes, as well as to Rab11- and Sec15-positive recycling endosomes, and regulates sorting from early endosomes. Moreover, MTMR4 is preferentially associated with and dephosphorylated the activated regulatory Smad proteins (R-Smads) in cytoplasm to keep transforming growth factor (TGF) beta signaling in homeostasis. It also functions as an essential negative modulator for the homeostasis of bone morphogenetic protein (BMP)/decapentaplegic (Dpp) signaling. In addition, MTMR4 acts as a novel interactor of the ubiquitin ligase Nedd4 (neural-precursor-cell-expressed developmentally down-regulated 4) and may play a role in the biological process of muscle breakdown. MTMR4 contains an N-terminal PH-GRAM (PH-G) domain, a MTM phosphatase domain, a coiled-coil region, and a C-terminal FYVE domain.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSP--KPVRVCDSCH 628
Cdd:cd15733    1 WVPDHAASHCFGCDCEFWLAKRKHHCRNCGNVFCADCSNYKLPIPDEQlyDPVRVCNSCY 60

FYVE domains found in zinc finger FYVE domain-containing protein 1 (ZFYV1) and similar proteins; ZFYV1, also termed double FYVE-containing protein 1 (DFCP1), or SR3, or tandem FYVE fingers-1, is a novel tandem FYVE domain containing protein that binds phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) with high specificity over other phosphoinositides. The subcellular distribution of exogenously-expressed ZFYV1 to Golgi, endoplasmic reticulum (ER) and vesicular is governed in part by its FYVE domains but unaffected by wortmannin, a PI3-kinase inhibitor. In addition to C-terminal tandem FYVE domain, ZFYV1 contains an N-terminal putative C2H2 type zinc finger and a possible nucleotide binding P-loop.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*....
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSC 627
Cdd:cd15734    2 WVPDSEIKECSVCKRPFSPRLSKHHCRACGQGVCDDCSKNRRPVPSRgwDHPVRVCDPC 60

FYVE domain like superfamily; FYVE domain is a 60-80 residue double zinc finger motif-containing module named after the four proteins, Fab1, YOTB, Vac1, and EEA1. The canonical FYVE domains are distinguished from other zinc fingers by three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCRxCG patch, and a C-terminal RVC motif, which form a compact phosphatidylinositol 3-phosphate (PtdIns3P, also termed PI3P)-binding site. They are found in many membrane trafficking regulators, including EEA1, Hrs, Vac1p, Vps27p, and FENS-1, which locate to early endosomes, specifically bind PtdIns3P, and play important roles in vesicular traffic and in signal transduction. Some proteins, such as rabphilin-3A and alpha-Rab3-interacting molecules (RIMs), are also involved in membrane trafficking and bind to members of the Rab subfamily of GTP hydrolases. However, they contain FYVE-related domains that are structurally similar to the canonical FYVE domains but lack the three signature sequences. At this point, they may not bind to phosphoinositides. In addition, this superfamily also contains the third group of proteins, caspase-associated ring proteins CARP1 and CARP2. They do not localize to membranes in the cell and are involved in the negative regulation of apoptosis, specifically targeting two initiator caspases, caspase 8 and caspase 10, which are distinguished from other FYVE-type proteins. Moreover, these proteins have an altered sequence in the basic ligand binding patch and lack the WxxD motif that is conserved only in phosphoinositide binding FYVE domains. Thus they constitute a family of unique FYVE-type domains called FYVE-like domains. The FYVE domain is structurally similar to the RING domain and the PHD finger. This superfamily also includes ADDz zinc finger domain, which is a PHD-like zinc finger motif that contains two parts, a C2-C2 and a PHD-like zinc finger.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|..
gi 966963267 579 HCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPS--SPKPVRVCDSCH 628
Cdd:cd00065    1 RCMLCGKKFSLFRRRHHCRRCGRVFCSKCSSKKLPLPSfgSGKPVRVCDSCY 52

FYVE domain found in zinc finger FYVE domain-containing protein 21 (ZF21) and similar proteins; ZF21 is phosphoinositide-binding protein that functions as a regulator of focal adhesions and cell movement through interaction with focal adhesion kinase. It can also bind to the cytoplasmic tail of membrane type 1 matrix metalloproteinase, a potent invasion-promoting protease, and play a key role in regulating multiple aspects of cancer cell migration and invasion. ZF21 contains a FYVE domain, which corresponds to this model.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267 570 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP--SSPKPVRVCDSC 627
Cdd:cd15727    3 PWVPDKECPVCMSCKKKFDFFKRRHHCRRCGKCFCSDCCSNKVPLPrmCFVDPVRVCNEC 62

FYVE domain found in hepatocyte growth factor (HGF)-regulated tyrosine kinase substrate (Hrs) and similar proteins; Hrs, also termed protein pp110, is a tyrosine phosphorylated protein that plays an important role in the signaling pathway of HGF. It is localized to early endosomes and an essential component of the endosomal sorting and trafficking machinery. Hrs interacts with hypertonia-associated protein Trak1, a novel regulator of endosome-to-lysosome trafficking. It can also forms an Hrs/actinin-4/BERP/myosin V protein complex that is required for efficient transferrin receptor (TfR) recycling but not for epidermal growth factor receptor (EGFR) degradation. Moreover, Hrs, together with STAM proteins, STAM1 and STAM2, and EPs15, forms a multivalent ubiquitin-binding complex that sorts ubiquitinated proteins into the multivesicular body pathway, and plays a regulatory role in endocytosis/exocytosis. Furthermore, Hrs functions as an interactor of the neurofibromatosis 2 tumor suppressor protein schwannomin/merlin. It is also involved in the inhibition of citron kinase-mediated HIV-1 budding. Hrs contains a single ubiquitin-interacting motif (UIM) that is crucial for its function in receptor sorting, and a FYVE domain that harbors double Zn2+ binding sites.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*....
gi 966963267 575 KEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSCHALL 631
Cdd:cd15720    3 KDGDECHRCRVQFGVFQRKHHCRACGQVFCGKCSSKSSTIPKFgiEKEVRVCDPCYEKL 61

FYVE domain found in FYVE and coiled-coil domain-containing protein 1 (FYCO1) and similar proteins; FYCO1, also termed zinc finger FYVE domain-containing protein 7, is a phosphatidylinositol 3-phosphate (PtdIns3P or PI3P)-binding protein that is associated with the exterior of autophagosomes and mediates microtubule plus-end-directed vesicle transport. It acts as an effector of GTP-bound Rab7, a GTPase that recruits FYCO1 to autophagosomes and has been implicated in autophagosome-lysosomal fusion. FYCO1 also interacts with two microtubule motor proteins, kinesin (KIF) 5B and KIF23, and thus functions as a platform for assembly of vesicle fusion and trafficking factors. FYCO1 contains an N-terminal alpha-helical RUN domain followed by a long central coiled-coil region, a FYVE domain and a GOLD (Golgi dynamics) domain in C-terminus.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*..
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSC 627
Cdd:cd15726    1 WQDDTDVTHCLDCKSEFSWMVRRHHCRLCGRIFCYACSNFYVLTAHGGKKERCCKAC 57

RUN domain found in RUN domain-containing protein 3A (RUNDC3A) and similar proteins; RUN domain-containing protein 3A (RUNDC3A), also called Rap2-interacting protein 8 (RPIP8), may act as an effector of Rap2A GTPase in neuronal cells. It contains a RUN domain.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267  48 NLLNMAKLSIKGLIESALSfgRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYN--KTIWGPLELVEKLYPEaeEIGA 125
Cdd:cd17699    1 NLITVCRFSVKTLLEKYTA--EPIDDSSEEFVNFAAILEQILSHRFKGPVSWFSSDgqRGFWDYIRLACSKVPN--NCIS 76

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 966963267 126 SVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANLC 200
Cdd:cd17699   77 SIENMENISTSRAKGRAWIRVALMEKRLSEYIATALRDTRTTRRFYDDGAIMLREESTVLTGMLIGLSAIDFSFC 151

FYVE domain found in Schizosaccharomyces pombe vacuolar protein sorting-associated protein 27 (spVps27p) and similar proteins; spVps27p, also termed suppressor of ste12 deletion protein 4 (Sst4p), is a conserved homolog of budding Saccharomyces cerevisiae Vps27 and of mammalian Hrs. It functions as a downstream factor for phosphatidylinositol 3-kinase (PtdIns 3-kinase) in forespore membrane formation with normal morphology. It colocalizes and interacts with Hse1p, a homolog of Saccharomyces cerevisiae Hse1p and of mammalian STAM, to form a complex whose ubiquitin-interacting motifs (UIMs) are important for sporulation. spVps27p contains a VHS (Vps27p/Hrs/Stam) domain, a FYVE domain, and two UIMs.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|.
gi 966963267 580 CKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP--SSPKPVRVCDSCH 628
Cdd:cd15735    9 CMRCRTAFTFTNRKHHCRNCGGVFCQQCSSKSLPLPhfGINQPVRVCDGCY 59

FYVE domain found in endofin and similar proteins; Endofin, also termed zinc finger FYVE domain-containing protein 16 (ZFY16), or endosome-associated FYVE domain protein, is a FYVE domain-containing protein that is localized to EEA1-containing endosomes. It is regulated by phosphoinositol lipid and engaged in endosome-mediated receptor modulation. Endofin is involved in Bone morphogenetic protein (BMP) signaling through interacting with Smad1 preferentially and enhancing Smad1 phosphorylation and nuclear localization upon BMP stimulation. It also functions as a scaffold protein that brings Smad4 to the proximity of the receptor complex in Transforming growth factor (TGF)-beta signaling. Moreover, endofin is a novel tyrosine phosphorylation target downstream of epidermal growth factor receptor (EGFR) in EGF-signaling. In addition, endofin plays a role in endosomal trafficking by recruiting cytosolic TOM1, an important molecule for membrane recruitment of clathrin, onto endosomal membranes.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 966963267 570 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP-SSPKPVRVCDSCHALL 631
Cdd:cd15729    6 VWVPDSEAPNCMQCEVKFTFTKRRHHCRACGKVLCSACCSLKARLEyLDNKEARVCVPCYQTL 68

FYVE domain found in metazoan PIKfyve, fungal and plant Fab1, and similar proteins; PIKfyve, also termed FYVE finger-containing phosphoinositide kinase, or 1-phosphatidylinositol 3-phosphate 5-kinase, or phosphatidylinositol 3-phosphate 5-kinase (PIP5K3), or phosphatidylinositol 3-phosphate 5-kinase type III (PIPkin-III or type III PIP kinase), is a phosphoinositide 5-kinase that forms a complex with its regulators, the scaffolding protein Vac14 and the lipid phosphatase Fig4. The complex is responsible for synthesizing phosphatidylinositol 3,5-bisphosphate [PtdIns(3,5)P2] from phosphatidylinositol 3-phosphate (PtdIns3P or PI3P). Then phosphatidylinositol-5-phosphate (PtdIns5P) is generated directly from PtdIns(3,5)P2. PtdIns(3,5)P2 and PtdIns5P regulate endosomal trafficking and responses to extracellular stimuli. At this point, PIKfyve is vital in early embryonic development. Moreover, PIKfyve forms a complex with ArPIKfyve (associated regulator of PIKfyve) and SAC3 at the endomembranes, which plays a role in receptor tyrosine kinase (RTK) degradation. The phosphorylation of PIKfyve by AKT can facilitate Epidermal growth factor receptor (EGFR) degradation. In addition, PIKfyve may participate in the regulation of the glutamate transporters EAAT2, EAAT3 and EAAT4, and the cystic fibrosis transmembrane conductance regulator (CFTR). It is also essential for systemic glucose homeostasis and insulin-regulated glucose uptake/GLUT4 translocation in skeletal muscle. It can be activated by protein kinase B (PKB/Akt) and further up-regulates human ether-a-go-go (hERG) channels. This family also includes the yeast and plant orthologs of human PIKfyve, Fab1. PIKfyve and its orthologs share a similar architecture. They contain an N-terminal FYVE domain, a middle region related to the CCT/TCP-1/Cpn60 chaperonins that are involved in productive folding of actin and tubulin, a second middle domain that contains a number of conserved cysteine residues (CCR) unique to this family, and a C-terminal lipid kinase domain related to PtdInsP kinases.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267 571 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKP--VRVCDSCH 628
Cdd:cd15725    2 WMPDSSCKECYECSEKFTTFRRRHHCRLCGQIFCSRCCNQEIPGKFIGYPgdLRVCTYCC 61

FYVE domain found in ankyrin repeat and FYVE domain-containing protein 1 (ANFY1) and similar proteins; ANFY1, also termed ankyrin repeats hooked to a zinc finger motif (Ankhzn), is a novel cytoplasmic protein that belongs to a new group of double zinc finger proteins involved in vesicle or protein transport. It is ubiquitously expressed in a spatiotemporal-specific manner and is located on endosomes. ANFY1 contains an N-terminal coiled-coil region and a BTB/POZ domain, ankyrin repeats in the middle, and a C-terminal FYVE domain.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 966963267 576 EATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSCHALL 631
Cdd:cd15728    6 DGDYCYECGVKFGITTRKHHCRHCGRLLCSKCSTKEVPIIKFdlNKPVRVCDVCFDVL 63

FYVE domain found in FYVE, RhoGEF and PH domain-containing protein facio-genital dysplasia FGD1, FGD2, FGD4; This family represents a group of Rho GTPase cell division cycle 42 (Cdc42)-specific guanine nucleotide exchange factors (GEFs), including FYVE, RhoGEF and PH domain-containing protein FGD1, FGD2 and FGD4. FGD1, also termed faciogenital dysplasia 1 protein, or Rho/Rac guanine nucleotide exchange factor FGD1 (Rho/Rac GEF), or zinc finger FYVE domain-containing protein 3, is a central regulator of extracellular matrix remodeling and belongs to the DBL family of GEFs that regulate the activation of the Rho GTPases. FGD1 is encoded by gene FGD1. Disabling mutations in the FGD1 gene cause the human X-linked developmental disorder faciogenital dysplasia (FGDY, also known as Aarskog-Scott syndrome). FGD2, also termed zinc finger FYVE domain-containing protein 4, is expressed in antigen-presenting cells, including B lymphocytes, macrophages, and dendritic cells. It localizes to early endosomes and active membrane ruffles. It plays a role in leukocyte signaling and vesicle trafficking in cells specialized to present antigen in the immune system. FGD4, also termed actin filament-binding protein frabin, or FGD1-related F-actin-binding protein, or zinc finger FYVE domain-containing protein 6, functions as an F-actin-binding (FAB) protein showing significant homology to FGD1. It induces the formation of filopodia through the activation of Cdc42 in fibroblasts. Those FGD proteins possess a similar domain organization that contains a DBL homology (DH) domain, a pleckstrin homology (PH) domain, a FYVE domain, and another PH domain in the C-terminus. However, each FGD has a unique N-terminal region that may directly or indirectly interact with F-actin. FGD1 and FGD4 have an N-terminal proline-rich domain (PRD) and an N-terminal F-actin binding (FAB) domain, respectively. This model corresponds to the FYVE domain, which has been found in many proteins involved in membrane trafficking and phosphoinositide metabolism, and has been defined by three signature sequences: an N-terminal WxxD motif (x for any residue), the central basic R(R/K)HHCR patch, and a C-terminal RVC motif, which form a compact phosphatidylinositol 3-phosphate (PtdIns3P or PI3P)-binding site. FGD1 possesses a FYVE-like domain that lack the N-terminal WxxD motif. Moreover, FGD2 is the only known RhoGEF family member shown to have a functional FYVE domain and endosomal binding activity.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 966963267 571 WLKDKEATHCKLCEKEF-SLSKRKHHCRNCGEIFCNACSDNELPLP-SSPKPVRVCDSCHALL 631
Cdd:cd15741    3 WVRDNEVTMCMRCKEPFnALTRRRHHCRACGYVVCWKCSDYKATLEyDGNKLNRVCKHCYVIL 65

FYVE domain found in protein containing both PH and FYVE domains 1 (phafin-1) and similar proteins; Phafin-1, also termed lysosome-associated apoptosis-inducing protein containing PH (pleckstrin homology) and FYVE domains (LAPF), or pleckstrin homology domain-containing family F member 1 (PKHF1), or PH domain-containing family F member 1, or apoptosis-inducing protein, or PH and FYVE domain-containing protein 1, or zinc finger FYVE domain-containing protein 15, is a representative of a novel family of PH and FYVE domain-containing proteins called phafins. It is a ubiquitously expressed pro-apoptotic protein via translocating to lysosomes, facilitating apoptosis induction through a lysosomal-mitochondrial apoptotic pathway.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 966963267 571 WLKDKEATHCKLC-EKEFSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCHALL 631
Cdd:cd15754    2 WIPDKATDICMRCtQTNFSLLTRRHHCRKCGFVVCHECSRQRFLIPRlSPKPVRVCSLCYRKL 64

FYVE domain found in FYVE domain-containing protein 26 (ZFY26 or ZFYVE26); ZFY26, also termed FYVE domain-containing centrosomal protein (FYVE-CENT), or spastizin, is a phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding protein that localizes to the centrosome and midbody. ZFY26 and its interacting partners TTC19 and KIF13A are required for cytokinesis. It also interacts with Beclin 1, a subunit of class III phosphatidylinositol 3-kinase complex, and may have potential implications for carcinogenesis. In addition, it has been considered as the causal agent of a rare form of hereditary spastic paraplegia. ZFY26 contains a FYVE domain that is important for targeting of FYVE-CENT to the midbody.

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 966963267 571 WLKDKEATHCKLCEKE-FSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCHA 629
Cdd:cd15724    1 WVPDEAVSVCMVCQVErFSMFNRRHHCRRCGRVVCSSCSTKKMLVEGyRENPVRVCDQCYE 61

chromosome segregation protein SMC, common bacterial type; SMC (structural maintenance of chromosomes) proteins bind DNA and act in organizing and segregating chromosomes for partition. SMC proteins are found in bacteria, archaea, and eukaryotes. This family represents the SMC protein of most bacteria. The smc gene is often associated with scpB (TIGR00281) and scpA genes, where scp stands for segregation and condensation protein. SMC was shown (in Caulobacter crescentus) to be induced early in S phase but present and bound to DNA throughout the cell cycle. [Cellular processes, Cell division, DNA metabolism, Chromosome-associated proteins]

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   224 DIGNKERNVQIAAILDQKN-YVEELNRQLNTVSSLHSRVDSLEKSNTKLIEELAIAKNNIIKLQEENHQLRSENKLILMK 302
Cdd:TIGR02168  217 ELKAELRELELALLVLRLEeLREELEELQEELKEAEEELEELTAELQELEEKLEELRLEVSELEEEIEELQKELYALANE 296

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   303 TQqhlevtkvDVETELQTYKHSRQGLDEMYNEARRQLRDESQLRQDVENELAvqvsmkheielamkLLEKDIHEKQDTLI 382
Cdd:TIGR02168  297 IS--------RLEQQKQILRERLANLERQLEELEAQLEELESKLDELAEELA--------------ELEEKLEELKEELE 354

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   383 GLRQQLEEVKAINIEMYQKLQGSEDGLKEKNEIIARLEEKTNKITAAMRQLEQRLQQAEKAQMEAEDE--------DEKY 454
Cdd:TIGR02168  355 SLEAELEELEAELEELESRLEELEEQLETLRSKVAQLELQIASLNNEIERLEARLERLEDRRERLQQEieellkklEEAE 434

                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 966963267   455 LQECLSKSDSLQKQISQKEKQLVQLETDLKIEKEWRQTLQEDLQKEKDALSHLRNEtqqIISLKKEFLNLQDENQQLKKI 534
Cdd:TIGR02168  435 LKELQAELEELEEELEELQEELERLEEALEELREELEEAEQALDAAERELAQLQAR---LDSLERLQENLEGFSEGVKAL 511

                   ....*.
gi 966963267   535 YHEQEQ 540
Cdd:TIGR02168  512 LKNQSG 517

FYVE-like domain found in FYVE, RhoGEF and PH domain-containing protein 5 (FGD5) and similar proteins; FGD5, also termed zinc finger FYVE domain-containing protein 23, is an endothelial cell (EC)-specific guanine nucleotide exchange factor (GEF) that regulates endothelial adhesion, survival, and angiogenesis by modulating phosphatidylinositol 3-kinase signaling. It functions as a novel genetic regulator of vascular pruning by activation of endothelial cell-targeted apoptosis. FGD5 is a homologue of FGD1 and contains a DBL homology (DH) domain, a pleckstrin homology (PH) domain, a FYVE domain, and another PH domain in the C-terminus, but lacks the N-terminal proline-rich domain (PRD) found in FGD1. The FYVE domain of FGD5 resembles a FYVE-like domain that is different from the canonical FYVE domains, since it lacks one of the three conserved signature motifs (the WxxD motif) that are involved in phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding and exhibits altered lipid binding specificities.

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*.
gi 966963267 580 CKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCHALLIQR 634
Cdd:cd15742   12 CMNCGSDFTLTLRRHHCHACGKIVCRNCSRNKYPLKYlKDRPAKVCDGCFAELRKR 67