Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
AIon_transe7eebA1 A: alpha complex topologyX: Voltage-gated ion channels (From Topology)H: Voltage-gated ion channels (From Topology)T: Voltage-gated ion channelsF: Ion_transECOD (1.6)
BIon_transe7eebB1 A: alpha complex topologyX: Voltage-gated ion channels (From Topology)H: Voltage-gated ion channels (From Topology)T: Voltage-gated ion channelsF: Ion_transECOD (1.6)
CIon_transe7eebC1 A: alpha complex topologyX: Voltage-gated ion channels (From Topology)H: Voltage-gated ion channels (From Topology)T: Voltage-gated ion channelsF: Ion_transECOD (1.6)
DIon_transe7eebD1 A: alpha complex topologyX: Voltage-gated ion channels (From Topology)H: Voltage-gated ion channels (From Topology)T: Voltage-gated ion channelsF: Ion_transECOD (1.6)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF00520Ion transport protein (Ion_trans)Ion transport protein- Family
PF15158Cation channel sperm-associated auxiliary subunit TMEM249 (TMEM249)Cation channel sperm-associated auxiliary subunit TMEM249- Family
PF00520Ion transport protein (Ion_trans)Ion transport protein- Family
PF08016Polycystin cation channel (PKD_channel)Polycystin cation channel- Family
PF00520Ion transport protein (Ion_trans)Ion transport protein- Family
PF08016Polycystin cation channel (PKD_channel)Polycystin cation channel- Family
PF00520Ion transport protein (Ion_trans)Ion transport protein- Family
PF21541CATSPER protein subunit beta protein 1st domain (CATSPERB_1st)CATSPER protein subunit beta protein 1st domainThis entry represents the N-terminal domain from the Cation channel sperm-associated protein subunit beta protein.Domain
PF22830CATSPERB head domain (CATSPERB_head)CATSPERB head domainCATSPERB (Cation channel sperm-associated protein subunit beta) is an auxiliary subunit of the CatSper complex which is involved in sperm cell hyperactivation, a process needed for sperm motility which is essential late in the preparation of sperm fo ...CATSPERB (Cation channel sperm-associated protein subunit beta) is an auxiliary subunit of the CatSper complex which is involved in sperm cell hyperactivation, a process needed for sperm motility which is essential late in the preparation of sperm for fertilisation. This is a multi-domain protein which consists of an N-terminal domain (Pfam:PF21541), followed by a beta-propeller (Pfam:PF21548) that is also present in the other auxiliary subunits gamma, delta and epsilon. This entry represents the head domain, only present in the beta subunit [1].
Domain
PF21548CATSPER subunit beta protein 2nd domain (CATSPERB_2nd)CATSPER subunit beta protein 2nd domainThis entry represents the beta-propeller domain from the Cation channel sperm-associated protein subunit beta protein. The cation channel of sperm (CatSper) is essential for sperm motility and fertility. The auxiliary subunit beta contains a single t ...This entry represents the beta-propeller domain from the Cation channel sperm-associated protein subunit beta protein. The cation channel of sperm (CatSper) is essential for sperm motility and fertility. The auxiliary subunit beta contains a single transmembrane segment and a large extracellular region.
Domain
PF22831CATSPERB Ig-like domain (CATSPERB_Ig-like)CATSPERB Ig-like domainCATSPERB (Cation channel sperm-associated protein subunit beta) is an auxiliary subunit of the CatSper complex which is involved in sperm cell hyperactivation, a process needed for sperm motility which is essential late in the preparation of sperm fo ...CATSPERB (Cation channel sperm-associated protein subunit beta) is an auxiliary subunit of the CatSper complex which is involved in sperm cell hyperactivation, a process needed for sperm motility which is essential late in the preparation of sperm for fertilisation. This is a multi-domain protein which consists of an N-terminal domain (Pfam:PF21541), followed by a beta-propeller (Pfam:PF21548) that is also present in the other auxiliary subunits gamma, delta and epsilon. This entry represents the Ig-like domain of CATSPERB [1], which, seals the top of the channel together with the Ig-like domains of the other auxiliary subunits [1].
Domain
PF15149CATSPERB, C-terminal domain (CATSPERB_C)CATSPERB, C-terminal domainThis entry includes CATSPERB, an auxiliary subunit of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1,2]. This ...This entry includes CATSPERB, an auxiliary subunit of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1,2]. This is a multi-domain protein; this entry represents the C-terminal domain which covers the Stem domain and the transmembrane helix, which are involved in the association with the channel domain [2].
Domain
PF22840CATSPERG N-terminal domain (CATSPERG_NTD)CATSPERG N-terminal domainThis entry includes CATSPERG, an auxiliary subunit of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1,2]. This ...This entry includes CATSPERG, an auxiliary subunit of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1,2]. This is a multi-domain protein; this entry represents the N-terminal domain [1].
Domain
PF22851CATSPERG Ig-like domain (CATSPERG_Ig-like)CATSPERG Ig-like domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. These are multidomain proteins which share a similar domain organisation. This entry represents the Ig-like domain of CATSPERG (gamma subunit).
Domain
PF15064CATSPERG beta-propeller domain (CATSPERG_beta-prop)CATSPERG beta-propeller domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1-3]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [3]. These are multidomain proteins which share a similar domain organisation. This entry represents the beta-propeller domain of the gamma subunit (CATSPERG) [3].
Domain
PF22846CATSPERG C-terminal domain (CATSPERG_C)CATSPERG C-terminal domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. These are multidomain proteins which share a similar domain organisation. This entry represents the C-terminal domain of CATSPERG, which covers the Stem domain and the transmembrane helix, involved in the association with the channel domain [1].
Domain
PF22850CATSPERD/E C-terminal domain (CATSPERD-E_C)CATSPERD/E C-terminal domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. These are multidomain proteins which share a similar domain organisation. This entry represents the C-terminal domain of delta and epsilon subunits, which covers the stem domain and the transmembrane helix, which are involved in the association with the channel domain [1].
Domain
PF15020CATSPERD, beta-propeller domain (CATSPERD_beta-prop)CATSPERD, beta-propeller domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1,2]. These are multidomain proteins which share a similar domain organisation. This entry represents the beta-propeller domain of the delta subunit (CATSPERD) [2].
Domain
PF22850CATSPERD/E C-terminal domain (CATSPERD-E_C)CATSPERD/E C-terminal domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. These are multidomain proteins which share a similar domain organisation. This entry represents the C-terminal domain of delta and epsilon subunits, which covers the stem domain and the transmembrane helix, which are involved in the association with the channel domain [1].
Domain
PF22849CATSPERE Ig-like domain (CATSPERE_Ig-like)CATSPERE Ig-like domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. These are multidomain proteins which share a similar domain organisation. This entry represents the Ig-like domain of CATSPERE (epsilon subunit).
Domain
PF22843CATSPERE second N-terminal domain (CATSPERE_NTD2)CATSPERE second N-terminal domainThis entry includes CATSPERE, the auxiliary subunit epsilon of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1, ...This entry includes CATSPERE, the auxiliary subunit epsilon of the CatSper complex, a complex involved in sperm cell hyperactivation. This process is needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1,2]. This is a multi-domain protein which has a similar domain organisation as the other auxiliary subunits, beta, gamma and delta. The epsilon subunit has two N-terminal domains (NTD1/2). This entry represents the second N-terminal domain [1].
Domain
PF22844CATSPERE beta-propeller domain (CATSPERE_beta-prop)CATSPERE beta-propeller domainThe CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a proc ...The CATSPER (cation channel of sperm) complex is a tetrameric complex consisting of CATSPER1, CATSPER2, CATSPER3 and CATSPER4, it functions as an alkalinisation-activated calcium channel. This complex is involved in sperm cell hyperactivation, a process needed for sperm motility, which is essential late in the preparation of sperm for fertilisation [1]. This complex requires four auxiliary subunits (beta, gamma, delta and epsilon), which play a role in channel assembly [1]. This entry includes CATSPERE, the auxiliary subunit epsilon of the CatSper complex. This is a multi-domain protein which has a similar domain organisation as the other auxiliary subunits, beta, gamma and delta. The epsilon subunit has an additional N-terminal domain (NTD2) which is followed by a beta-propeller domain, represented in this entry.
Domain
I [auth L]PF07648Kazal-type serine protease inhibitor domain (Kazal_2)Kazal-type serine protease inhibitor domainUsually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containi ...Usually indicative of serine protease inhibitors. However, kazal-like domains are also seen in the extracellular part of agrins, which are not known to be protease inhibitors. Kazal domains often occur in tandem arrays. Small alpha+beta fold containing three disulphides.
Domain
I [auth L]PF03137Organic Anion Transporter Polypeptide (OATP) family (OATP)Organic Anion Transporter Polypeptide (OATP) family- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Enhanced green fluorescent protein,Cation channel sperm-associated protein 1
Transmembrane protein 249- -
K [auth M]Transmembrane protein 262- -
L [auth N]Unknown---
M [auth I]EF-hand calcium-binding domain-containing protein 9
N [auth K]Cation channel sperm-associated protein subunit zeta-
Cation channel sperm-associated protein 2
Cation channel sperm-associated protein 3
Cation channel sperm-associated protein 4
Cation channel sperm-associated protein subunit beta-
Cation channel sperm-associated protein subunit gamma 2-
Cation channel sperm-associated protein subunit delta-
Cation channel sperm-associated protein subunit epsilon-
I [auth L]Kazal-like domain-containing protein

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
IPR005821Ion transport domainDomain
IPR028746Cation channel sperm-associated protein 1Family
IPR027359Voltage-dependent channel domain superfamilyHomologous Superfamily
IPR027861Cation channel sperm-associated auxiliary subunit TMEM249Family
K [auth M]IPR040431Cation channel sperm-associated auxiliary subunit TMEM262Family
M [auth I]IPR002048EF-hand domainDomain
M [auth I]IPR011992EF-hand domain pairHomologous Superfamily
M [auth I]IPR042798EF-hand calcium-binding domain-containing protein 9Family
N [auth K]IPR039019Cation channel sperm-associated auxiliary subunit zetaFamily
IPR005821Ion transport domainDomain
IPR028747Cation channel sperm-associated protein 2Family
IPR027359Voltage-dependent channel domain superfamilyHomologous Superfamily
IPR005821Ion transport domainDomain
IPR027359Voltage-dependent channel domain superfamilyHomologous Superfamily
IPR005821Ion transport domainDomain
IPR028744Cation channel sperm-associated protein 4Family
IPR027359Voltage-dependent channel domain superfamilyHomologous Superfamily
IPR048789Cation channel sperm-associated protein subunit beta, C-terminal domainDomain
IPR053903CATSPERB, head domainDomain
IPR053904CATSPERB, Ig-like domainDomain
IPR048788Cation channel sperm-associated auxiliary subunit beta, 2nd domainDomain
IPR028748Cation channel sperm-associated auxiliary subunit betaFamily
IPR048786Cation channel sperm-associated auxiliary subunit beta, N-terminal domainDomain
IPR053873CATSPERG, C-terminal domainDomain
IPR053874CATSPERG, Ig-like domainDomain
IPR053872CATSPERG, N-terminal domainDomain
IPR053871CATSPERG, beta-propeller domainDomain
IPR028246Cation channel sperm-associated auxiliary subunit gammaFamily
IPR053814CATSPERD/E, C-terminal domainDomain
IPR028751Cation channel sperm-associated auxiliary subunit delta/epsilonFamily
IPR053813CATSPERD, beta-propeller domainDomain
IPR053814CATSPERD/E, C-terminal domainDomain
IPR053817CATSPERE, second N-terminal domainDomain
IPR028751Cation channel sperm-associated auxiliary subunit delta/epsilonFamily
IPR053818CATSPERE, first N-terminal domainDomain
IPR053816CATSPERE, beta-propeller domainDomain
IPR053815CATSPERE, Ig-like domainDomain
I [auth L]IPR036058Kazal domain superfamilyHomologous Superfamily
I [auth L]IPR036259MFS transporter superfamilyHomologous Superfamily
I [auth L]IPR002350Kazal domainDomain
I [auth L]IPR004156Organic anion transporter polypeptideFamily

Membrane Protein Annotation: OPM OPM Database Homepage

ChainsExternal LinkTypeClassSuperfamilyFamily
A, B, C, D, E
OPMTransmembraneAlpha-helical polytopicIon channel (VIC) superfamilyCATSPER channel

Membrane Protein Annotation: PDBTM PDBTM Database Homepage

ChainsExternal LinkComment
A, B, C, D, E
PDBTMAnnotated as membrane protein by PDBTM