FYVE-related domain found in protrudin and similar proteins; Protrudin, also termed zinc finger FYVE domain-containing protein 27 (ZFY27 or ZFYVE27), is a FYVE domain-containing protein involved in transport of neuronal cargoes and implicated in the onset of hereditary spastic paraplegia (HSP). It is involved in neurite outgrowth through binding to spastin. Moreover, it functions as a key regulator of the Rab11-dependent membrane trafficking during neurite extension. It serves as an adaptor molecule that links its associated proteins, such as Rab11-GDP, VAP-A and -B, Surf4, and RTN3, to KIF5, a motor protein that mediates anterograde vesicular transport in neurons, and thus plays a key role in the maintenance of neuronal function. The FYVE domain of protrudin resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the 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. In addition, unlike canonical FYVE domains that is located to early endosomes and specifically binds to phosphatidylinositol 3-phosphate (PtdIns3P or PI3P), the FYVE domain of protrudin is located to plasma membrane and preferentially binds phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2), phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4)P2), and phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3). In addition to FYVE-related domain, protrudin also contains a Rab11-binding domain (RBD11), two hydrophobic domains, HP-1 and HP-2, an FFAT motif, and a coiled-coil domain.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1883541851 347 NCTGCSATFSVL-KKRRSCSNCGNSFCSRCCSFKVPKSSMGATA 389
Cdd:cd15723     1 NCTGCGASFSVLlKKRRSCNNCGNAFCSRCCSKKVPRSVMGATA 44

FYVE-related domain found in protrudin and similar proteins; Protrudin, also termed zinc finger FYVE domain-containing protein 27 (ZFY27 or ZFYVE27), is a FYVE domain-containing protein involved in transport of neuronal cargoes and implicated in the onset of hereditary spastic paraplegia (HSP). It is involved in neurite outgrowth through binding to spastin. Moreover, it functions as a key regulator of the Rab11-dependent membrane trafficking during neurite extension. It serves as an adaptor molecule that links its associated proteins, such as Rab11-GDP, VAP-A and -B, Surf4, and RTN3, to KIF5, a motor protein that mediates anterograde vesicular transport in neurons, and thus plays a key role in the maintenance of neuronal function. The FYVE domain of protrudin resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the 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. In addition, unlike canonical FYVE domains that is located to early endosomes and specifically binds to phosphatidylinositol 3-phosphate (PtdIns3P or PI3P), the FYVE domain of protrudin is located to plasma membrane and preferentially binds phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2), phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4)P2), and phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3). In addition to FYVE-related domain, protrudin also contains a Rab11-binding domain (RBD11), two hydrophobic domains, HP-1 and HP-2, an FFAT motif, and a coiled-coil domain.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1883541851 347 NCTGCSATFSVL-KKRRSCSNCGNSFCSRCCSFKVPKSSMGATA 389
Cdd:cd15723     1 NCTGCGASFSVLlKKRRSCNNCGNAFCSRCCSKKVPRSVMGATA 44

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
                  ....*....|....*....|....*....|....*.
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVPK 382
Cdd:pfam01363  11 VCMICSKPFTFFRRRHHCRNCGRVFCSACSSKKISL 46

FYVE-related domain found in protrudin and similar proteins; Protrudin, also termed zinc finger FYVE domain-containing protein 27 (ZFY27 or ZFYVE27), is a FYVE domain-containing protein involved in transport of neuronal cargoes and implicated in the onset of hereditary spastic paraplegia (HSP). It is involved in neurite outgrowth through binding to spastin. Moreover, it functions as a key regulator of the Rab11-dependent membrane trafficking during neurite extension. It serves as an adaptor molecule that links its associated proteins, such as Rab11-GDP, VAP-A and -B, Surf4, and RTN3, to KIF5, a motor protein that mediates anterograde vesicular transport in neurons, and thus plays a key role in the maintenance of neuronal function. The FYVE domain of protrudin resembles a FYVE-related domain that is structurally similar to the canonical FYVE domains but lacks the 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. In addition, unlike canonical FYVE domains that is located to early endosomes and specifically binds to phosphatidylinositol 3-phosphate (PtdIns3P or PI3P), the FYVE domain of protrudin is located to plasma membrane and preferentially binds phosphatidylinositol 4,5-bisphosphate (PtdIns(4,5)P2), phosphatidylinositol 3,4-bisphosphate (PtdIns(3,4)P2), and phosphatidylinositol 3,4,5-trisphosphate (PtdIns(3,4,5)P3). In addition to FYVE-related domain, protrudin also contains a Rab11-binding domain (RBD11), two hydrophobic domains, HP-1 and HP-2, an FFAT motif, and a coiled-coil domain.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....
gi 1883541851 347 NCTGCSATFSVL-KKRRSCSNCGNSFCSRCCSFKVPKSSMGATA 389
Cdd:cd15723     1 NCTGCGASFSVLlKKRRSCNNCGNAFCSRCCSKKVPRSVMGATA 44

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
                  ....*....|....*....|....*....|....*....|
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVPKSSMG 386
Cdd:cd00065     1 RCMLCGKKFSLFRRRHHCRRCGRVFCSKCSSKKLPLPSFG 40

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
                  ....*....|....*....|....*....|....*.
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVPK 382
Cdd:pfam01363  11 VCMICSKPFTFFRRRHHCRNCGRVFCSACSSKKISL 46

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
                  ....*....|....*....|....*....|....*
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVP 381
Cdd:cd15733     9 HCFGCDCEFWLAKRKHHCRNCGNVFCADCSNYKLP 43

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
                  ....*....|....*....|....*....|....*....|.
gi 1883541851 348 CTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVPKSSMGAT 388
Cdd:cd15725    11 CYECSEKFTTFRRRHHCRLCGQIFCSRCCNQEIPGKFIGYP 51

FYVE domain found in WD40 repeat and FYVE domain-containing protein 3 (WDFY3) and similar proteins; WDFY3, also termed autophagy-linked FYVE protein (Alfy), is a ubiquitously expressed phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding protein required for selective macroautophagic degradation of aggregated proteins. It regulates the protein degradation through the direct interaction with the autophagy protein Atg5. Moreover, WDFY3 acts as a scaffold that bridges its cargo to the macroautophagic machinery via the creation of a greater complex with Atg12, Atg16L, and LC3. It also functionally associates with sequestosome-1/p62 (SQSTM1) in osteoclasts. WDFY3 shuttles between the nucleus and cytoplasm. It predominantly localizes to the nucleus and nuclear membrane under basal conditions, but is recruited to cytoplasmic ubiquitin-positive protein aggregates under stress conditions. WDFY3 contains a PH-BEACH domain assemblage, five WD40 repeats and a PtdIns3P-binding FYVE domain.

                          10        20        30
                  ....*....|....*....|....*....|..
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSF 378
Cdd:cd15719    11 SCTGCSVRFSLTERRHHCRNCGQLFCSKCSRF 42

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
                  ....*....|....*....|....*....|....*....|.
gi 1883541851 337 RKRYPTNNFGNCTGCSATFSVLKKRRSCSNCGNSFCSRCCS 377
Cdd:cd15730     1 RKWADDEEVQNCMACGKGFSVTVRKHHCRQCGNIFCNECSS 41

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
                  ....*....|....*....|....*....|....*...
gi 1883541851 347 NCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVPKSS 384
Cdd:cd15721     9 HCQQCEKEFSLSRRKHHCRNCGGIFCNSCSDNTMPLPS 46

FYVE domain found in uncharacterized rab GTPase-binding effector proteins from bilateria; This family includes a group of uncharacterized rab GTPase-binding effector proteins found in bilateria. Although their biological functions remain unclear, they all contain a FYVE domain that harbors a putative phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding site.

                          10        20        30
                  ....*....|....*....|....*....|....*.
gi 1883541851 346 GNCTGCSATFSVLKKRRSCSNCGNSFCSRCCSFKVP 381
Cdd:cd15739    11 DQCPNCKTPFSVGKRKHHCRHCGKIFCSDCLTKTVP 46

FYVE-like domain found in FYVE, RhoGEF and PH domain-containing protein 3 (FGD3) and similar proteins; FGD3, also termed zinc finger FYVE domain-containing protein 5, is a putative Cdc42-specific guanine nucleotide exchange factor (GEF) that undergoes the ubiquitin ligase SCFFWD1/beta-TrCP-mediated proteasomal degradation. It is a homologue of FGD1 and contains a DBL homology (DH) domain and pleckstrin homology (PH) domain in the middle region, a FYVE domain, and another PH domain in the C-terminus, but lacks the N-terminal proline-rich domain (PRD) found in FGD1. Due to this difference, FGD3 may play different roles from that of FGD1 to regulate cell morphology or motility. The FYVE domain of FGD3 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
                  ....*....|....*....|....*....|....
gi 1883541851 347 NCTGCSATF-SVLKKRRSCSNCGNSFCSRCCSFK 379
Cdd:cd15740     7 TCKGCNESFnSITKRRHHCKQCGAVICGKCSEFK 40

FYVE-related domain found in RUN and FYVE domain-containing protein 4 (RUFY4) and similar proteins; RUFY4 belongs to the FUFY protein family which is characterized by the presence of an N-terminal RUN domain and a C-terminal FYVE domain. The FYVE domain of RUFY4 resembles the FYVE-related domain as it lacks the WxxD motif (x for any residue). The biological function of RUFY4 still remains unclear.

                          10        20        30
                  ....*....|....*....|....*....|
gi 1883541851 348 CTGCSATFSVLKKRRSCSNCGNSFCSRCCS 377
Cdd:cd15745     2 CAICAKAFSLFRRKYVCRLCGGVVCHSCSS 31

FYVE-like domain found in caspase regulator CARP1 and similar proteins; CARP1, also termed E3 ubiquitin-protein ligase RNF34, or caspases-8 and -10-associated RING finger protein 1, or FYVE-RING finger protein Momo, or RING finger homologous to inhibitor of apoptosis protein (RFI), or RING finger protein 34, or RING finger protein RIFF, is a nuclear protein that functions as a specific E3 ubiquitin ligase for the transcriptional coactivator PGC-1alpha, a master regulator of energy metabolism and adaptive thermogenesis in the brown fat cell, and negatively regulates brown fat cell metabolism. It is preferentially expressed in esophageal, gastric and colorectal cancers, suggesting a possible association with the development of the digestive tract cancers. It regulates the p53 signaling pathway through degrading 14-3-3 sigma and stabilizing MDM2. CARP1 does not localize to membranes in the cell and is 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, CARP1 has an altered sequence in the basic ligand binding patch and lack the WxxD (x for any residue) motif that is conserved only in phosphoinositide binding FYVE domains. Thus it belongs to a family of unique FYVE-type domains called FYVE-like domains. In addition to the N-terminal FYVE-like domain, CARP1 harbors a C-terminal RING domain.

                          10        20
                  ....*....|....*....|....*...
gi 1883541851 348 CTGCSATFSVLKKRRSCSNCGNSFCSRC 375
Cdd:cd15769     4 CKACGLAFSVFRKKHVCCDCKKDFCSVC 31

FYVE-related domain found in uncharacterized myotubularin-related proteins mainly from eumetazoa; This family includes a group of uncharacterized myotubularin-related proteins mainly found in eumetazoa. Although their biological functions remain unclear, they share similar domain architecture that consists of an N-terminal pleckstrin homology (PH) domain, a highly conserved region related to myotubularin proteins, a C-terminal FYVE domain. The model corresponds to the FYVE domain, which resembles the FYVE-related domain as it has an altered sequence in the basic ligand binding patch.

                          10        20
                  ....*....|....*....|....*.
gi 1883541851 350 GCSATFSVLKKRRSCSNCGNSFCSRC 375
Cdd:cd15738    13 SCSTPFDHFSKKHHCWRCGNVFCTRC 38