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 1052793228 534 GLVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALLIQRCSSN 604
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 1052793228 534 GLVWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALLIQRCSSN 604
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 1052793228 536 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP---SSPKPVRVCDSCHALL 597
Cdd:pfam01363   2 VWVPDSSATVCMICSKPFTFFRRRHHCRNCGRVFCSACSSKKISLLpelGSNKPVRVCDACYDTL 66

domain involved in Ras-like GTPase signaling;

                           10        20        30        40        50        60
                   ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1052793228  105 ARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMM-EEEGAVIVGLLVGLNVIDANLCVK 167
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 1052793228  328 EIELAMKLLEKDIHEKQDTLIGLRQQLEEVKAINIEMYQKLQGSEDGLKEKNEIIARLEEKTNkitaamrQLEQRLQQAE 407
Cdd:TIGR02168  681 ELEEKIEELEEKIAELEKALAELRKELEELEEELEQLRKELEELSRQISALRKDLARLEAEVE-------QLEERIAQLS 753

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1052793228  408 KAQMEAEDEDEKYLQEclskSDSLQKQISQKEKQLVQLETDLkiekewrQTLQEDLQKEKDALSHLRNETQQiisLKKEF 487
Cdd:TIGR02168  754 KELTELEAEIEELEER----LEEAEEELAEAEAEIEELEAQI-------EQLKEELKALREALDELRAELTL---LNEEA 819

                          170       180       190       200       210       220       230
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1052793228  488 LNLQDENQQLKKIYHEQEQALQELGNKLSESKLKIE-----------DIKEANKALQGLVWLKDKEATHCKLCEKEFS 554
Cdd:TIGR02168  820 ANLRERLESLERRIAATERRLEDLEEQIEELSEDIEslaaeieeleeLIEELESELEALLNERASLEEALALLRSELE 897

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 1052793228  248 IIKLQEENHQLRSenkliLMKTQQHLEVTKVDVETELQTYKHSRQGLDEMYNEARRQLRDESQLRQDvenelavqvsmkh 327
Cdd:pfam12128  243 FTKLQQEFNTLES-----AELRLSHLHFGYKSDETLIASRQEERQETSAELNQLLRTLDDQWKEKRD------------- 304

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1052793228  328 EIELAMKLLEKDIHEKQDTLIGLRQQLEEVKAINIEMYQKLQGSEDG----LKEKNEIIARLEEKTNKITAAMRQLEQRL 403
Cdd:pfam12128  305 ELNGELSAADAAVAKDRSELEALEDQHGAFLDADIETAAADQEQLPSwqseLENLEERLKALTGKHQDVTAKYNRRRSKI 384

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1052793228  404 QQAEKAQMEAEDEDEKYLQECLSK-----SDSLQKQISQKEKQLVQLETDLKIEKE-------WRQTLQEDLQKEKDALS 471
Cdd:pfam12128  385 KEQNNRDIAGIKDKLAKIREARDRqlavaEDDLQALESELREQLEAGKLEFNEEEYrlksrlgELKLRLNQATATPELLL 464

                          250       260       270       280       290       300
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1052793228  472 HLRN---------ETQQiiSLKKEFLNLQDENQQLKKIYHEQEQALQELGNKLSESKLKIEDIKE 527
Cdd:pfam12128  465 QLENfderierarEEQE--AANAEVERLQSELRQARKRRDQASEALRQASRRLEERQSALDELEL 527

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 1052793228  10 ERANLLNMAKLSIKGLIESALSFGRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYNKTIWGPLELVEKLYPEAEEIG 89
Cdd:cd17681     1 ERRNLLNLAKLSIKELIESALSFGRTLDSDHVPLQQFFVILEHVLRHGLKVKKSFLGPNKSFWPVLEHVEKLVPEANEIT 80

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1052793228  90 ASVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANL 164
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 1052793228  10 ERANLLNMAKLSIKGLIESALSFGRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYNKTIWGPLELVEKLYPEAEEIG 89
Cdd:cd17696     1 ERMNLMNMAKLSIKGLIESALNLGRTLDSDYAPLQQFFVVMEHCLKHGLKAKKTFLGQNKSFWGPLELVEKLVPEAAEIT 80

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 1052793228  90 ASVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANLC 165
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 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCH 594
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 1052793228  45 QFFVVMEHCLKHGLKV------RKSFLSYNKTIWGPLELVEKLYPEAEEIGASVRDLPGLKT---PLGRARAWLRLALMQ 115
Cdd:pfam02759   1 QLCAALEALLSHGLKRssllilRAAGLLPERSFWALLERVGKLVPPAEELLSSVQELEQIHTpysPDGRGRAWIRLALNE 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 1052793228 116 KKMADYLRCLIIQRDLLSEFYEYHALMMEEEGA-VIVGLLVGLNVIDANLCVKG 168
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 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKPVRVCDSCHALL 597
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 1052793228  21 SIKGLIESAL-------SFGRTLDSDYPPLQQFFVVMEHCLKHGLKvRKSFLSYNKTIWGPLELVEKLYPEAEEIGA--S 91
Cdd:cd17671     2 AVKELLESFAdngeaddSAALTLTDDDPVVGRLCAALEAILSHGLK-PKRFGGGKVSFWDFLEALEKLLPAPSLKQAirD 80

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1052793228  92 VRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMM-EEEGAVIVGLLVGLNVIDANL 164
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 1052793228 536 VWLKDKEATHCKLCEK-EFSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCH 594
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 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSP--KPVRVCDSCH 594
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 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSC 593
Cdd:cd15734     2 WVPDSEIKECSVCKRPFSPRLSKHHCRACGQGVCDDCSKNRRPVPSRgwDHPVRVCDPC 60

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        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPS--SPKPVRVCDSCHALL 597
Cdd:cd15719     3 WVKDEGGDSCTGCSVRFSLTERRHHCRNCGQLFCSKCSRFESEIRRlrISRPVRVCQACYNIL 65

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 1052793228 536 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP--SSPKPVRVCDSC 593
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 1052793228 541 KEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSCHALL 597
Cdd:cd15720     3 KDGDECHRCRVQFGVFQRKHHCRACGQVFCGKCSSKSSTIPKFgiEKEVRVCDPCYEKL 61

FYVE-related domain found in RUN and FYVE domain-containing protein 3 (RUFY3) and similar proteins; RUFY3, also termed 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. Moreover, the FYVE domain of RUFY3 resembles the FYVE-related domain as it lacks the WxxD motif (x for any residue).

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1052793228 546 CKLCEKE-FSLSKRKHHCRNCGEIFCNACSDNELPLPSS-PKPVRVCDSCH 594
Cdd:cd15744     2 CSLCQEDfASLALPKHNCYNCGGTFCDACSSNELPLPSSiYEPARVCDVCY 52

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 1052793228  13 NLLNMAKLSIKGLIESALSfgRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYN--KTIWGPLELVEKLYPEaeEIGA 90
Cdd:cd17699     1 NLITVCRFSVKTLLEKYTA--EPIDDSSEEFVNFAAILEQILSHRFKGPVSWFSSDgqRGFWDYIRLACSKVPN--NCIS 76

                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1052793228  91 SVRDLPGLKTPLGRARAWLRLALMQKKMADYLRCLIIQRDLLSEFYEYHALMMEEEGAVIVGLLVGLNVIDANLC 165
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 1052793228 546 CKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP--SSPKPVRVCDSCH 594
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 1052793228 536 VWLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLP-SSPKPVRVCDSCHALL 597
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 1052793228 537 WLKDKEATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSSPKP--VRVCDSCH 594
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 1052793228 542 EATHCKLCEKEFSLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSCHALL 597
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 1052793228 537 WLKDKEATHCKLCEKEF-SLSKRKHHCRNCGEIFCNACSDNELPLP-SSPKPVRVCDSCHALL 597
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 1052793228 537 WLKDKEATHCKLC-EKEFSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCHALL 597
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 1052793228 537 WLKDKEATHCKLCEKE-FSLSKRKHHCRNCGEIFCNACSDNELPLPS-SPKPVRVCDSCHA 595
Cdd:cd15724     1 WVPDEAVSVCMVCQVErFSMFNRRHHCRRCGRVVCSSCSTKKMLVEGyRENPVRVCDQCYE 61

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        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1052793228 545 HCKLCEKEFSLSKRKHHCRNCGEIFCNACS--DNELPLPSSPKPVRVCDSC 593
Cdd:cd15745     1 ACAICAKAFSLFRRKYVCRLCGGVVCHSCSseDLVLSVPDTCIYLRVCKTC 51

FYVE domain found in WD40 repeat and FYVE domain-containing protein WDFY1 and WDFY2, and similar proteins; This family includes WD40 repeat and FYVE domain-containing protein WDFY1 and WDFY2. WDFY1, also termed FYVE domain containing protein localized to endosomes-1 (FENS-1), or phosphoinositide-binding protein 1, or zinc finger FYVE domain-containing protein 17, is a novel single FYVE domain containing protein that binds phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) with high specificity over other phosphoinositides. WDFY1 to early endosomes requires an intact FYVE domain and is inhibited by wortmannin, a PI3-kinase inhibitor. WDFY2, also termed zinc finger FYVE domain-containing protein 22, or ProF (propeller-FYVE protein), is a phosphatidylinositol 3-phosphate (PtdIns3P or PI3P) binding protein that is localized to a distinct subset of early endosomes close to the plasma membrane. It interacts preferentially with endogenous serine/threonine kinase Akt2, but not Akt1, and plays a specific role in modulating signaling through Akt downstream of the interaction of this kinase with the endosomal proteins APPL (adaptor protein containing PH domain, PTB domain, and leucine zipper motif). In addition to Akt, WDFY2 serves as a binding partner for protein kinase C, zeta (PRKCZ), and its substrate vesicle-associated membrane protein 2 (VAMP2), and is involved in vesicle cycling in various secretory pathways. Moreover, Silencing of WDFY2 by siRNA produces a strong inhibition of endocytosis. Both WDFY1 and WDFY2 contain a FYVE domain and multiple WD-40 repeats.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1052793228 541 KEATHCKLCEKEF-----------SLSKRKHHCRNCGEIFCNACSDNELPLPSS--PKPVRVCDSCH 594
Cdd:cd15718     4 AESDNCQKCSRPFfwnfkqmwekkTLGVRQHHCRKCGKAVCDKCSSNRSTIPVMgfEFPVRVCNECY 70

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 1052793228  328 EIELAMKLLEKDIHEKQDTLIGLRQQLEEVKAINIEMYQKLQGSEDGLKEKNEIIARLEEKTNkitaamrQLEQRLQQAE 407
Cdd:TIGR02168  681 ELEEKIEELEEKIAELEKALAELRKELEELEEELEQLRKELEELSRQISALRKDLARLEAEVE-------QLEERIAQLS 753

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1052793228  408 KAQMEAEDEDEKYLQEclskSDSLQKQISQKEKQLVQLETDLkiekewrQTLQEDLQKEKDALSHLRNETQQiisLKKEF 487
Cdd:TIGR02168  754 KELTELEAEIEELEER----LEEAEEELAEAEAEIEELEAQI-------EQLKEELKALREALDELRAELTL---LNEEA 819

                          170       180       190       200       210       220       230
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 1052793228  488 LNLQDENQQLKKIYHEQEQALQELGNKLSESKLKIE-----------DIKEANKALQGLVWLKDKEATHCKLCEKEFS 554
Cdd:TIGR02168  820 ANLRERLESLERRIAATERRLEDLEEQIEELSEDIEslaaeieeleeLIEELESELEALLNERASLEEALALLRSELE 897

RUN domain found in RUN and FYVE domain-containing protein 4 (RUFY4), FYVE and coiled-coil domain-containing protein 1 (FYCO1), and similar proteins; The family includes RUFY4 and FYCO1. RUFY4 acts as a positive regulator that enhances autophagy and lysosome tethering in response to Interleukin-4. It is expressed in a cell-specific manner or under specific immunological conditions associated with IL4 expression such as allergic asthma. FYCO1, also called zinc finger FYVE domain-containing protein 7 (ZFYVE7), is a multidomain autophagy adaptor protein that interacts with kinesin motor proteins and with the autophagosomal membrane components microtubule-associated protein 1 light chain 3 (LC3), Rab7, and phosphatidylinositol 3-phosphate (PI3P), to mediate microtubule plus-end-directed autophagosome transport. Both RUFY4 and FYCO1 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 1052793228  22 IKGLIESALS-FGRTLDSDYPPLQQFFVVMEHCLKHGLKVRKSFLSYNKTIWGPLE-LVEKLYPEA---EEIGASVRDLP 96
Cdd:cd17682     2 LKGCVLDLKSeFGEITDPDNPYLRPFCETLEKILRKGLKEKVSLGGRRKDYWDWLEeLLKKLNKIPkslSDAVKFVKSCK 81