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| | SPA17 | Sperm surface protein Sp17; Sperm surface zona pellucida binding protein. Helps to bind spermatozoa to the zona pellucida with high affinity. Might function in binding zona pellucida and carbohydrates (By similarity). (151 aa) |
| | JHY | Jhy protein homolog; Required for the normal development of cilia in brain ependymal cells lining the ventricular surfaces. (778 aa) |
| | RSPH4A | Radial spoke head protein 4 homolog A; Probable component of the axonemal radial spoke head. Radial spokes are regularly spaced along cilia, sperm and flagella axonemes. They consist of a thin stalk which is attached to a subfiber of the outer doublet microtubule, and a bulbous head which is attached to the stalk and appears to interact with the projections from the central pair of microtubules. (716 aa) |
| | ZMYND10 | Zinc finger MYND domain-containing protein 10; Plays a role in axonemal structure organization and motility. Involved in axonemal pre-assembly of inner and outer dynein arms (IDA and ODA, respectively) for proper axoneme building for cilia motility (By similarity). May act by indirectly regulating transcription of dynein proteins (By similarity). Belongs to the ZMYND10 family. (440 aa) |
| | APOB | Apolipoprotein B-100; Apolipoprotein B is a major protein constituent of chylomicrons (apo B-48), LDL (apo B-100) and VLDL (apo B-100). Apo B- 100 functions as a recognition signal for the cellular binding and internalization of LDL particles by the apoB/E receptor. (4563 aa) |
| | TNP1 | Spermatid nuclear transition protein 1; Plays a key role in the replacement of histones to protamine in the elongating spermatids of mammals. In condensing spermatids, loaded onto the nucleosomes, where it promotes the recruitment and processing of protamines, which are responsible for histone eviction. Belongs to the nuclear transition protein 1 family. (55 aa) |
| | IFT81 | Intraflagellar transport protein 81 homolog; Component of the intraflagellar transport (IFT) complex B: together with IFT74, forms a tubulin-binding module that specifically mediates transport of tubulin within the cilium. Binds tubulin via its CH (calponin-homology)-like region. Required for ciliogenesis. Required for proper regulation of SHH signaling. Belongs to the IFT81 family. (676 aa) |
| | DNAI2 | Dynein intermediate chain 2, axonemal; Part of the dynein complex of respiratory cilia; Belongs to the dynein intermediate chain family. (605 aa) |
| | TTC21A | Tetratricopeptide repeat protein 21A; Intraflagellar transport (IFT)-associated protein required for spermatogenesis. Required for sperm flagellar formation and intraflagellar transport. Belongs to the TTC21 family. (1320 aa) |
| | C9orf116 | UPF0691 protein C9orf116; Chromosome 9 open reading frame 116. (136 aa) |
| | CFAP221 | Cilia- and flagella-associated protein 221; May play a role in cilium morphogenesis. (840 aa) |
| | TTLL3 | Tubulin monoglycylase TTLL3; Monoglycylase which modifies alpha- and beta-tubulin, generating side chains of glycine on the gamma-carboxyl groups of specific glutamate residues within the C-terminal tail of alpha- and beta-tubulin. Involved in the side-chain initiation step of the glycylation reaction by adding a single glycine chain to generate monoglycine side chains. Not involved in elongation step of the polyglycylation reaction. (915 aa) |
| | TTLL8 | Protein monoglycylase TTLL8; Monoglycylase which modifies both tubulin and non-tubulin proteins, generating side chains of glycine on the gamma-carboxyl groups of specific glutamate residues of target proteins. Monoglycylates tubulin, with a preference for alpha-tubulin toward beta-tubulin. Has the ability to modify non-tubulin proteins such as ANP32A, ANP32B, SET and NCL. Involved in the side-chain initiation step of the glycylation reaction by adding a single glycine chain to generate monoglycine side chains. Not involved in elongation step of the polyglycylation reaction (By similarity). (849 aa) |
| | CCDC103 | Coiled-coil domain-containing protein 103; Dynein-attachment factor required for cilia motility. Belongs to the CCDC103/PR46b family. (242 aa) |
| | CFAP54 | Cilia- and flagella-associated protein 54; Required for assembly and function of cilia and flagella. (3096 aa) |
| | ROPN1B | Ropporin-1B; Important for male fertility. With ROPN1L, involved in fibrous sheath integrity and sperm motility, plays a role in PKA- dependent signaling processes required for spermatozoa capacitation. Belongs to the ropporin family. (212 aa) |
| | CATSPER4 | Cation channel sperm-associated protein 4; Voltage-gated calcium channel that plays a central role in calcium-dependent physiological responses essential for successful fertilization, such as sperm hyperactivation, acrosome reaction and chemotaxis towards the oocyte; Belongs to the cation channel sperm-associated (TC 1.A.1.19) family. (472 aa) |
| | ZBBX | Zinc finger B-box domain containing. (839 aa) |
| | CACNA1I | Voltage-dependent T-type calcium channel subunit alpha-1I; Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. This channel gives rise to T-type calcium currents. T-type calcium channels belong to the 'low-voltage activated (LVA)' group and are strongly blocked by nickel and mibefradil. A particularity of this type of channels is an opening at quite [...] (2223 aa) |
| | ADCY3 | Adenylate cyclase type 3; Catalyzes the formation of the signaling molecule cAMP in response to G-protein signaling. Participates in signaling cascades triggered by odorant receptors via its function in cAMP biosynthesis. Required for the perception of odorants. Required for normal sperm motility and normal male fertility. Plays a role in regulating insulin levels and body fat accumulation in response to a high fat diet. (1145 aa) |
| | MEIG1 | Meiosis expressed gene 1 protein homolog; Essential for spermiogenesis. (88 aa) |
| | CFAP53 | Cilia- and flagella-associated protein 53; May play a role in the beating of primary cilia and thereby be involved in the establishment of organ laterality during embryogenesis. (514 aa) |
| | EFCAB9 | EF-hand calcium-binding domain-containing protein 9; pH-dependent Ca(2+) sensor required to activate the CatSper channel, a complex involved in sperm cell hyperactivation. Sperm cell hyperactivation is needed for sperm motility which is essential late in the preparation of sperm for fertilization. Associates with the CatSper complex via direct interaction with CATSPERZ, and senses intracellular Ca(2+). Together with CATSPERZ, associates with the CatSper channel pore and is required for the two-row structure of each single CatSper channel. (197 aa) |
| | CCDC40 | Coiled-coil domain-containing protein 40; Required for assembly of dynein regulatory complex (DRC) and inner dynein arm (IDA) complexes, which are responsible for ciliary beat regulation, thereby playing a central role in motility in cilia and flagella. Probably acts together with CCDC39 to form a molecular ruler that determines the 96 nanometer (nm) repeat length and arrangements of components in cilia and flagella (By similarity). Not required for outer dynein arm complexes assembly. Required for axonemal recruitment of CCDC39. Belongs to the CCDC40 family. (1142 aa) |
| | TEKT3 | Tektin-3; May be a structural component of the sperm flagellum. Required for normal sperm mobility. (490 aa) |
| | SLC9B2 | Sodium/hydrogen exchanger 9B2; Na(+)/H(+) antiporter that extrudes Na(+) or Li(+) in exchange for external protons across the membrane. Contributes to the regulation of intracellular pH, sodium homeostasis, and cell volume. Plays an important role for insulin secretion and clathrin-mediated endocytosis in beta-cells (By similarity). Involved in sperm motility and fertility (By similarity). It is controversial whether SLC9B2 plays a role in osteoclast differentiation or not (By similarity). (537 aa) |
| | CFAP44 | Cilia- and flagella-associated protein 44; Flagellar protein involved in sperm flagellum axoneme organization and function. (1854 aa) |
| | HYDIN | Hydrocephalus-inducing protein homolog; Required for ciliary motility. (5121 aa) |
| | ARMC2 | Armadillo repeat-containing protein 2; Required for sperm flagellum axoneme organization and function (By similarity). Involved in axonemal central pair complex assembly and/or stability (By similarity). (867 aa) |
| | ASH1L | Histone-lysine N-methyltransferase ASH1L; Histone methyltransferase specifically trimethylating 'Lys- 36' of histone H3 forming H3K36me3. Also monomethylates 'Lys-9' of histone H3 (H3K9me1) in vitro (By similarity). The physiological significance of the H3K9me1 activity is unclear (By similarity); Belongs to the class V-like SAM-binding methyltransferase superfamily. Histone-lysine methyltransferase family. SET2 subfamily. (2964 aa) |
| | KLC3 | Kinesin light chain 3; Kinesin is a microtubule-associated force-producing protein that may play a role in organelle transport; Belongs to the kinesin light chain family. (504 aa) |
| | DNAH17 | Dynein heavy chain 17, axonemal; Force generating protein of respiratory cilia. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP. Involved in sperm motility; implicated in sperm flagellar assembly (By similarity). (4462 aa) |
| | CFAP69 | Cilia- and flagella-associated protein 69; Cilium- and flagellum-associated protein. In the olfactory epithelium, regulates the speed of activation and termination of the odor response and thus contributes to the robustness of olfactory transduction pathways (By similarity). Required for sperm flagellum assembly and stability. (941 aa) |
| | RFX3 | Transcription factor RFX3; Transcription factor required for ciliogenesis and islet cell differentiation during endocrine pancreas development. Essential for the differentiation of nodal monocilia and left-right asymmetry specification during embryogenesis. Required for the biogenesis of motile cilia by governing growth and beating efficiency of motile cells. Also required for ciliated ependymal cell differentiation. Regulates the expression of genes involved in ciliary assembly (DYNC2LI1, FOXJ1 and BBS4) and genes involved in ciliary motility (DNAH11, DNAH9 and DNAH5) (By similarity). [...] (749 aa) |
| | CATSPER2 | Cation channel sperm-associated protein 2; Voltage-gated calcium channel that plays a central role in calcium-dependent physiological responses essential for successful fertilization, such as sperm hyperactivation, acrosome reaction and chemotaxis towards the oocyte; Belongs to the cation channel sperm-associated (TC 1.A.1.19) family. (534 aa) |
| | CATSPERD | Cation channel sperm-associated protein subunit delta; Auxiliary component of the CatSper complex, a complex involved in sperm cell hyperactivation. Sperm cell hyperactivation is needed for sperm motility which is essential late in the preparation of sperm for fertilization. Required for CATSPER1 stability before intraflagellar transport and/or incorporation of the CatSper complex channel into the flagellar membrane. (798 aa) |
| | DNAJA1 | DnaJ homolog subfamily A member 1; Co-chaperone for HSPA8/Hsc70. Stimulates ATP hydrolysis, but not the folding of unfolded proteins mediated by HSPA1A (in vitro). Plays a role in protein transport into mitochondria via its role as co-chaperone. Functions as co- chaperone for HSPA1B and negatively regulates the translocation of BAX from the cytosol to mitochondria in response to cellular stress, thereby protecting cells against apoptosis. Promotes apoptosis in response to cellular stress mediated by exposure to anisomycin or UV. (397 aa) |
| | SPEF1 | Sperm flagellar protein 1; Microtubule-associated protein involved in the stabilization of microtubules along the axis of migration during radial intercalation. Promotes the establishment and stabilization of an axis of microtubules required for the active migration of cells into the outer epithelium (By similarity). Microtubule-associated protein that promotes microtubule bundling and stabilizes microtubules against depolymerization in response to cold shock (By similarity). (236 aa) |
| | CFAP47 | Cilia and flagella associated protein 47. (3187 aa) |
| | DNAAF1 | Dynein assembly factor 1, axonemal; Cilium-specific protein required for the stability of the ciliary architecture. Plays a role in cytoplasmic preassembly of dynein arms. Involved in regulation of microtubule-based cilia and actin-based brush border microvilli. (725 aa) |
| | NPHP4 | Nephrocystin-4; Involved in the organization of apical junctions; the function is proposed to implicate a NPHP1-4-8 module. Does not seem to be strictly required for ciliogenesis. Required for building functional cilia. Involved in the organization of the subapical actin network in multiciliated epithelial cells. Seems to recruit INT to basal bodies of motile cilia which subsequently interacts with actin-modifying proteins such as DAAM1 (By similarity). In cooperation with INVS may downregulate the canonical Wnt pathway and promote the Wnt-PCP pathway by regulating expression and subce [...] (1426 aa) |
| | SPAG6 | Sperm-associated antigen 6; Important for structural integrity of the central apparatus in the sperm tail and for flagellar motility. (509 aa) |
| | CFAP157 | Cilia- and flagella-associated protein 157; Specifically required during spermatogenesis for flagellum morphogenesis and sperm motility. May be required to suppress the formation of supernumerary axonemes and ensure a correct ultrastructure; Belongs to the CFAP157 family. (520 aa) |
| | INPP5B | Type II inositol 1,4,5-trisphosphate 5-phosphatase; Hydrolyzes phosphatidylinositol 4,5-bisphosphate (PtIns(4,5)P2) and the signaling molecule phosphatidylinositol 1,4,5- trisphosphate (PtIns(1,4,5)P3), and thereby modulates cellular signaling events. (913 aa) |
| | RSPH9 | Radial spoke head protein 9 homolog; Probable component of the axonemal radial spoke head. Radial spokes are regularly spaced along cilia, sperm and flagella axonemes. They consist of a thin stalk, which is attached to a subfiber of the outer doublet microtubule, and a bulbous head, which is attached to the stalk and appears to interact with the projections from the central pair of microtubules. (306 aa) |
| | TCTE1 | Dynein regulatory complex subunit 5; Component of the nexin-dynein regulatory complex (N-DRC) a key regulator of ciliary/flagellar motility which maintains the alignment and integrity of the distal axoneme and regulates microtubule sliding in motile axonemes. May play a role in the assembly of N-DRC. May be required for sperm motility. (501 aa) |
| | WDR78 | WD repeat-containing protein 78. (848 aa) |
| | DPCD | Protein DPCD; May play a role in the formation or function of ciliated cells. (203 aa) |
| | NEURL1 | E3 ubiquitin-protein ligase NEURL1; Plays a role in hippocampal-dependent synaptic plasticity, learning and memory. Involved in the formation of spines and functional synaptic contacts by modulating the translational activity of the cytoplasmic polyadenylation element-binding protein CPEB3. Promotes ubiquitination of CPEB3, and hence induces CPEB3-dependent mRNA translation activation of glutamate receptor GRIA1 and GRIA2. Can function as an E3 ubiquitin-protein ligase to activate monoubiquitination of JAG1 (in vitro), thereby regulating the Notch pathway. Acts as a tumor suppressor; i [...] (574 aa) |
| | CFAP58 | Cilia and flagella associated protein 58; Belongs to the CFAP58 family. (872 aa) |
| | CFAP206 | Cilia- and flagella-associated protein 206; May regulate cilium motility through its role in the assembly of the axonemal radial spokes. (622 aa) |
| | DDX4 | Probable ATP-dependent RNA helicase DDX4; ATP-dependent RNA helicase required during spermatogenesis. Required to repress transposable elements and preventing their mobilization, which is essential for the germline integrity (By similarity). Acts via the piRNA metabolic process, which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and Piwi proteins and governs the methylation and subsequent repression of transposons (By similarity). Involved in the secondary piRNAs metabolic process, the production of piRNAs in fetal male germ ce [...] (724 aa) |
| | TTC29 | Tetratricopeptide repeat domain 29. (501 aa) |
| | ROPN1L | Ropporin-1-like protein; Important for male fertility. With ROPN1, involved in fibrous sheath integrity and sperm motility, plays a role in PKA-dependent signaling processes required for spermatozoa capacitation. (230 aa) |
| | TTC12 | Tetratricopeptide repeat domain 12. (711 aa) |
| | CCDC39 | Coiled-coil domain-containing protein 39; Required for assembly of dynein regulatory complex (DRC) and inner dynein arm (IDA) complexes, which are responsible for ciliary beat regulation, thereby playing a central role in motility in cilia and flagella. Probably acts together with CCDC40 to form a molecular ruler that determines the 96 nanometer (nm) repeat length and arrangements of components in cilia and flagella (By similarity). Not required for outer dynein arm complexes assembly ; Belongs to the CCDC39 family. (941 aa) |
| | PLTP | Phospholipid transfer protein; Facilitates the transfer of a spectrum of different lipid molecules, including diacylglycerol, phosphatidic acid, sphingomyelin, phosphatidylcholine, phosphatidylglycerol, cerebroside and phosphatidyl ethanolamine. Essential for the transfer of excess surface lipids from triglyceride-rich lipoproteins to HDL, thereby facilitating the formation of smaller lipoprotein remnants, contributing to the formation of LDL, and assisting in the maturation of HDL particles. PLTP also plays a key role in the uptake of cholesterol from peripheral cells and tissues that [...] (493 aa) |
| | CAMSAP3 | Calmodulin-regulated spectrin-associated protein 3; Key microtubule-organizing protein that specifically binds the minus-end of non-centrosomal microtubules and regulates their dynamics and organization. Specifically recognizes growing microtubule minus-ends and autonomously decorates and stabilizes microtubule lattice formed by microtubule minus-end polymerization. Acts on free microtubule minus-ends that are not capped by microtubule-nucleating proteins or other factors and protects microtubule minus-ends from depolymerization. In addition, it also reduces the velocity of microtubule [...] (1276 aa) |
| | CFAP97D1 | Uncharacterized protein CFAP97D1; CFAP97 domain containing 1; Belongs to the CFAP97 family. (164 aa) |
| | MST1 | Hepatocyte growth factor-like protein alpha chain; Macrophage stimulating 1. (725 aa) |
| | DNAH1 | Dynein heavy chain 1, axonemal; Force generating protein of cilia required for sperm flagellum motility. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP. Required in spermatozoa for the formation of the inner dynein arms and biogenesis of the axoneme ; Belongs to the dynein heavy chain family. (4265 aa) |
| | FSIP2 | Fibrous sheath-interacting protein 2; Plays a role in spermatogenesis. (6907 aa) |
| | QRICH2 | Glutamine-rich protein 2; Has an essential role in the formation of sperm flagella and flagellar structure maintainance. It acts as a suppressor of ubiquitination and degradation of proteins involved in flagellar development and motility. (1663 aa) |
| | DNAH5 | Dynein heavy chain 5, axonemal; Force generating protein of respiratory cilia. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP. Required for structural and functional integrity of the cilia of ependymal cells lining the brain ventricles. (4624 aa) |
| | SLC9A3R1 | Na(+)/H(+) exchange regulatory cofactor NHE-RF1; Scaffold protein that connects plasma membrane proteins with members of the ezrin/moesin/radixin family and thereby helps to link them to the actin cytoskeleton and to regulate their surface expression. Necessary for recycling of internalized ADRB2. Was first known to play a role in the regulation of the activity and subcellular location of SLC9A3. Necessary for cAMP-mediated phosphorylation and inhibition of SLC9A3. May enhance Wnt signaling. May participate in HTR4 targeting to microvilli (By similarity). Involved in the regulation of [...] (358 aa) |
| | DNAH9 | Dynein heavy chain 9, axonemal; Force generating protein required for cilia beating in respiratory epithelia. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP. (4486 aa) |
| | EFCAB1 | EF-hand calcium-binding domain-containing protein 1; EF-hand calcium binding domain 1. (211 aa) |
| | KIAA0556 | Protein KIAA0556; May influence the stability of microtubules (MT), possibly through interaction with the MT-severing katanin complex. (1618 aa) |
| | INTS13 | Integrator complex subunit 13; Crucial regulator of the mitotic cell cycle and development. At prophase, required for dynein anchoring to the nuclear envelope important for proper centrosome-nucleus coupling. At G2/M phase, may be required for proper spindle formation and execution of cytokinesis. Probable component of the Integrator (INT) complex, a complex involved in the small nuclear RNAs (snRNA) U1 and U2 transcription and in their 3'-box-dependent processing. (706 aa) |
| | MNS1 | Meiosis-specific nuclear structural protein 1; May play a role in the control of meiotic division and germ cell differentiation through regulation of pairing and recombination during meiosis; Belongs to the MNS1 family. (495 aa) |
| | DZIP1 | Zinc finger protein DZIP1; May participate in spermatogenesis via its interaction with DAZ. Has a role in primary cilium formation ; Belongs to the DZIP C2H2-type zinc-finger protein family. (867 aa) |
| | DNHD1 | Dynein heavy chain domain 1. (4753 aa) |
| | CFAP61 | Cilia- and flagella-associated protein 61; May regulate cilium motility through its role in the assembly of the axonemal radial spokes. (1237 aa) |
| | BBS2 | Bardet-Biedl syndrome 2 protein; The BBSome complex is thought to function as a coat complex required for sorting of specific membrane proteins to the primary cilia. The BBSome complex is required for ciliogenesis but is dispensable for centriolar satellite function. This ciliogenic function is mediated in part by the Rab8 GDP/GTP exchange factor, which localizes to the basal body and contacts the BBSome. Rab8(GTP) enters the primary cilium and promotes extension of the ciliary membrane. Firstly the BBSome associates with the ciliary membrane and binds to RAB3IP/Rabin8, the guanosyl ex [...] (721 aa) |
| | SLC22A16 | Solute carrier family 22 member 16; High affinity carnitine transporter; the uptake is partially sodium-ion dependent. Thought to mediate the L-carnitine secretion mechanism from testis epididymal epithelium into the lumen which is involved in the maturation of spermatozoa. Also transports organic cations such as tetraethylammonium (TEA) and doxorubicin. The uptake of TEA is inhibited by various organic cations. The uptake of doxorubicin is sodium-independent; Belongs to the major facilitator (TC 2.A.1) superfamily. Organic cation transporter (TC 2.A.1.19) family. (577 aa) |
| | SMCP | Sperm mitochondrial-associated cysteine-rich protein; Involved in sperm motility. Its absence is associated with genetic background dependent male infertility. Infertility may be due to reduced sperm motility in the female reproductive tract and inability to penetrate the oocyte zona pellucida (By similarity). (116 aa) |
| | CFAP46 | Cilia- and flagella-associated protein 46; As part of the central apparatus of the cilium axoneme plays a role in cilium movement. (2715 aa) |
| | CFAP45 | Cilia and flagella associated protein 45. (551 aa) |
| | ATP1A4 | Sodium/potassium-transporting ATPase subunit alpha-4; This is the catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of sodium and potassium ions across the plasma membrane. This action creates the electrochemical gradient of sodium and potassium ions, providing the energy for active transport of various nutrients. Plays a role in sperm motility. (1029 aa) |
| | ADCY10 | Adenylate cyclase type 10; Catalyzes the formation of the signaling molecule cAMP. May function as sensor that mediates responses to changes in cellular bicarbonate and CO(2) levels. Has a critical role in mammalian spermatogenesis by producing the cAMP which regulates cAMP-responsive nuclear factors indispensable for sperm maturation in the epididymis. Induces capacitation, the maturational process that sperm undergo prior to fertilization (By similarity). Involved in ciliary beat regulation. (1610 aa) |
| | CATSPERE | Cation channel sperm-associated protein subunit epsilon; Auxiliary component of the CatSper complex, a complex involved in sperm cell hyperactivation. Sperm cell hyperactivation is needed for sperm motility which is essential late in the preparation of sperm for fertilization; Belongs to the CATSPERD family. (951 aa) |
| | SEPTIN4 | Uncharacterized protein C17orf47; Septin 4. (570 aa) |
| | DRC7 | Dynein regulatory complex subunit 7; Component of the nexin-dynein regulatory complex (N-DRC) a key regulator of ciliary/flagellar motility which maintains the alignment and integrity of the distal axoneme and regulates microtubule sliding in motile axonemes. Involved in the regulation of flagellar motility. (874 aa) |
| | VPS13A | Vacuolar protein sorting-associated protein 13A; May play a role in the control of protein cycling through the trans-Golgi network to early and late endosomes, lysosomes and plasma membrane. (3174 aa) |
| | TPGS1 | Tubulin polyglutamylase complex subunit 1; May act in the targeting of the tubulin polyglutamylase complex. Required for the development of the spermatid flagellum (By similarity). (290 aa) |
| | GK2 | Glycerol kinase 2; Key enzyme in the regulation of glycerol uptake and metabolism; Belongs to the FGGY kinase family. (553 aa) |
| | AKAP4 | A-kinase anchor protein 4; Major structural component of sperm fibrous sheath. Plays a role in sperm motility; Belongs to the AKAP110 family. (854 aa) |
| | ATP2B4 | Plasma membrane calcium-transporting ATPase 4; Calcium/calmodulin-regulated and magnesium-dependent enzyme that catalyzes the hydrolysis of ATP coupled with the transport of calcium out of the cell. By regulating sperm cell calcium homeostasis, may play a role in sperm motility (By similarity). Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IIB subfamily. (1205 aa) |
| | TEX43 | Testis-expressed protein 43; Testis expressed 43. (134 aa) |
| | CFAP43 | Cilia- and flagella-associated protein 43; Flagellar protein involved in sperm flagellum axoneme organization and function. (1665 aa) |
| | CCDC151 | Coiled-coil domain-containing protein 151; Ciliary protein involved in outer dynein arm assembly and required for motile cilia function. (595 aa) |
| | SORD | Sorbitol dehydrogenase; Polyol dehydrogenase that catalyzes the reversible NAD(+)- dependent oxidation of various sugar alcohols. Is mostly active with D- sorbitol (D-glucitol), L-threitol, xylitol and ribitol as substrates, leading to the C2-oxidized products D-fructose, L-erythrulose, D- xylulose, and D-ribulose, respectively. Is a key enzyme in the polyol pathway that interconverts glucose and fructose via sorbitol, which constitutes an important alternate route for glucose metabolism. The polyol pathway is believed to be involved in the etiology of diabetic complications, such as d [...] (357 aa) |
| | GAS8 | Dynein regulatory complex subunit 4; Component of the nexin-dynein regulatory complex (N-DRC), a key regulator of ciliary/flagellar motility which maintains the alignment and integrity of the distal axoneme and regulates microtubule sliding in motile axonemes. Plays an important role in the assembly of the N-DRC linker (By similarity). Plays dual roles at both the primary (or non-motile) cilia to regulate hedgehog signaling and in motile cilia to coordinate cilia movement. Required for proper motile cilia functioning. Positively regulates ciliary smoothened (SMO)-dependent Hedgehog (Hh [...] (478 aa) |
| | CEP131 | Centrosomal protein of 131 kDa; Component of centriolar satellites contributing to the building of a complex and dynamic network required to regulate cilia/flagellum formation. In proliferating cells, MIB1-mediated ubiquitination induces its sequestration within centriolar satellites, precluding untimely cilia formation initiation. In contrast, during normal and ultraviolet or heat shock cellular stress-induced ciliogenesis, its non-ubiquitinated form is rapidly displaced from centriolar satellites and recruited to centrosome/basal bodies in a microtubule- and p38 MAPK-dependent manner [...] (1083 aa) |
| | CELSR2 | Cadherin EGF LAG seven-pass G-type receptor 2; Receptor that may have an important role in cell/cell signaling during nervous system formation; Belongs to the G-protein coupled receptor 2 family. LN-TM7 subfamily. (2923 aa) |
| | SLC22A14 | Solute carrier family 22 member 14; Belongs to the major facilitator (TC 2.A.1) superfamily. Organic cation transporter (TC 2.A.1.19) family. (594 aa) |
| | MAATS1 | Cilia- and flagella-associated protein 91; May play a role in spermatogenesis. May regulate cilium motility through its role in the assembly of the axonemal radial spokes (By similarity). (767 aa) |
| | CABS1 | Calcium-binding and spermatid-specific protein 1; Calcium binding protein, spermatid associated 1. (395 aa) |
| | CATSPER3 | Cation channel sperm-associated protein 3; Voltage-gated calcium channel that plays a central role in calcium-dependent physiological responses essential for successful fertilization, such as sperm hyperactivation, acrosome reaction and chemotaxis towards the oocyte. (398 aa) |
| | TEKT5 | Tektin-5; May be a structural component of the sperm flagellum. (485 aa) |
| | ARMC12 | Armadillo repeat containing 12. (367 aa) |
| | WDR66 | Cilia- and flagella-associated protein 251; Involved in spermatozoa motility. May also regulate cilium motility through its role in the assembly of the axonemal radial spokes (By similarity). (1149 aa) |
| | CELF3 | CUGBP Elav-like family member 3; RNA-binding protein involved in the regulation of pre-mRNA alternative splicing. Mediates exon inclusion and/or exclusion in pre- mRNA that are subject to tissue-specific and developmentally regulated alternative splicing. Specifically activates exon 5 inclusion of cardiac isoforms of TNNT2 during heart remodeling at the juvenile to adult transition. Activates the splicing of MAPT/Tau exon 10. Binds to muscle-specific splicing enhancer (MSE) intronic sites flanking the alternative exon 5 of TNNT2 pre-mRNA. (465 aa) |
| | WDR63 | WD repeat-containing protein 63. (891 aa) |
| | TEKT4 | Tektin-4; May be a structural component of the sperm flagellum. Contributes to normal sperm motility; Belongs to the tektin family. (435 aa) |
| | CCNYL1 | Cyclin-Y-like protein 1; Cyclin Y like 1; Belongs to the cyclin family. Cyclin Y subfamily. (359 aa) |
| | STK36 | Serine/threonine-protein kinase 36; Serine/threonine protein kinase which plays an important role in the sonic hedgehog (Shh) pathway by regulating the activity of GLI transcription factors. Controls the activity of the transcriptional regulators GLI1, GLI2 and GLI3 by opposing the effect of SUFU and promoting their nuclear localization. GLI2 requires an additional function of STK36 to become transcriptionally active, but the enzyme does not need to possess an active kinase catalytic site for this to occur. Required for postnatal development, possibly by regulating the homeostasis of c [...] (1315 aa) |
| | LZTFL1 | Leucine zipper transcription factor-like protein 1; Regulates ciliary localization of the BBSome complex. Together with the BBSome complex, controls SMO ciliary trafficking and contributes to the sonic hedgehog (SHH) pathway regulation. May play a role in neurite outgrowth. May have tumor suppressor function. Belongs to the LZTFL1 family. (299 aa) |
| | SLC9B1 | Sodium/hydrogen exchanger 9B1; Sperm-specific Na(+)/H(+) exchanger involved in intracellular pH regulation of spermatozoa. Involved in sperm motility and fertility. Belongs to the monovalent cation:proton antiporter 1 (CPA1) transporter (TC 2.A.36) family. (515 aa) |
| | DNAAF5 | Dynein assembly factor 5, axonemal; Cytoplasmic protein involved in the delivery of the dynein machinery to the motile cilium. It is required for the assembly of the axonemal dynein inner and outer arms, two structures attached to the peripheral outer doublet A microtubule of the axoneme, that play a crucial role in cilium motility. (855 aa) |
| | KIF27 | Kinesin-like protein KIF27; Plays an essential role in motile ciliogenesis. (1401 aa) |
| | DNAAF2 | Protein kintoun; Required for cytoplasmic pre-assembly of axonemal dyneins, thereby playing a central role in motility in cilia and flagella. Involved in pre-assembly of dynein arm complexes in the cytoplasm before intraflagellar transport loads them for the ciliary compartment. Belongs to the PIH1 family. Kintoun subfamily. (837 aa) |
| | TBC1D21 | TBC1 domain family member 21; May act as a GTPase-activating protein for Rab family protein(s). May be involved in acrosome formation and cytoskeletal reorganization during spermiogenesis, possibly by regulating RAB3A activity. (336 aa) |
| | PGK2 | Phosphoglycerate kinase 2; Essential for sperm motility and male fertility. Not required for the completion of spermatogenesis (By similarity); Belongs to the phosphoglycerate kinase family. (417 aa) |
| | ARMC4 | Armadillo repeat-containing protein 4; Ciliary protein that may be involved in a late step of axonemal outer dynein arm assembly. (1044 aa) |
| | SLC9C1 | Sodium/hydrogen exchanger 10; Sperm-specific sodium/hydrogen exchanger involved in intracellular pH regulation of spermatozoa. Required for sperm motility and fertility. Involved in sperm cell hyperactivation, a step needed for sperm motility which is essential late in the preparation of sperm for fertilization. Required for the expression and bicarbonate regulation of the soluble adenylyl cyclase (sAC) (By similarity). (1177 aa) |
| | ING2 | Inhibitor of growth protein 2; Seems to be involved in p53/TP53 activation and p53/TP53- dependent apoptotic pathways, probably by enhancing acetylation of p53/TP53. Component of a mSin3A-like corepressor complex, which is probably involved in deacetylation of nucleosomal histones. ING2 activity seems to be modulated by binding to phosphoinositides (PtdInsPs). (280 aa) |
| | SPEF2 | Sperm flagellar protein 2; Required for correct axoneme development in spermatozoa. Important for normal development of the manchette and sperm head morphology. Essential for male fertility. Plays a role in localization of the intraflagellar transport protein IFT20 to the manchette, suggesting function as an adapter for dynein-mediated protein transport during spermatogenesis. Also plays a role in bone growth where it seems to be required for normal osteoblast differentiation. (1822 aa) |
| | SLC26A8 | Testis anion transporter 1; Acts as a DIDS-sensitive anion exchanger mediating chloride, sulfate and oxalate transport. May fulfill critical anion exchange functions in male germ line during meiosis and hence may play a role in spermatogenesis. May be involved in a new regulatory pathway linking sulfate transport to RhoGTPase signaling in male germ cells. A critical component of the sperm annulus that is essential for correct sperm tail differentiation and motility and hence male fertility. May form a molecular complex involved in the regulation of chloride and bicarbonate ions fluxes [...] (970 aa) |
| | ENO4 | Enolase 4; May be required for sperm motility and function. (625 aa) |
| | SPEM1 | Spermatid maturation protein 1; Required for proper cytoplasm removal during spermatogenesis. (309 aa) |
| | CCDC63 | Coiled-coil domain-containing protein 63; Plays a role in spermiogenesis. Involved in the elongation of flagella and the formation of sperm heads. (563 aa) |
| | DAW1 | Dynein assembly factor with WDR repeat domains 1; May play a role in axonemal outer row dynein assembly. Belongs to the WD repeat WDR69 family. (415 aa) |
| | DNAH7 | Dynein heavy chain 7, axonemal; Force generating protein of respiratory cilia. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP (By similarity). (4024 aa) |
| | CFAP70 | Cilia and flagella associated protein 70; Belongs to the CFAP70 family. (1121 aa) |
| | CFAP100 | Cilia- and flagella-associated protein 100; May play a role in ciliary/flagellar motility by regulating the assembly and the activity of axonemal inner dynein arm. (611 aa) |
| | OFD1 | Oral-facial-digital syndrome 1 protein; Component of the centrioles controlling mother and daughter centrioles length. Recruits to the centriole IFT88 and centriole distal appendage-specific proteins including CEP164. Involved in the biogenesis of the cilium, a centriole-associated function. The cilium is a cell surface projection found in many vertebrate cells required to transduce signals important for development and tissue homeostasis. Plays an important role in development by regulating Wnt signaling and the specification of the left-right axis. Only OFD1 localized at the centriol [...] (1012 aa) |
| | NEK10 | Serine/threonine-protein kinase Nek10; NIMA related kinase 10; Belongs to the protein kinase superfamily. NEK Ser/Thr protein kinase family. NIMA subfamily. (712 aa) |
| | UBE2B | Ubiquitin-conjugating enzyme E2 B; Accepts ubiquitin from the E1 complex and catalyzes its covalent attachment to other proteins. In association with the E3 enzyme BRE1 (RNF20 and/or RNF40), it plays a role in transcription regulation by catalyzing the monoubiquitination of histone H2B at 'Lys- 120' to form H2BK120ub1. H2BK120ub1 gives a specific tag for epigenetic transcriptional activation, elongation by RNA polymerase II, telomeric silencing, and is also a prerequisite for H3K4me and H3K79me formation. In vitro catalyzes 'Lys-11'-, as well as 'Lys-48'- and 'Lys-63'-linked polyubiqui [...] (152 aa) |
| | TTLL1 | Probable tubulin polyglutamylase TTLL1; Catalytic subunit of the neuronal tubulin polyglutamylase complex. Modifies alpha- and beta-tubulin, generating side chains of glutamate on the gamma-carboxyl groups of specific glutamate residues within the C-terminal tail of alpha- and beta-tubulin (By similarity). (423 aa) |
| | IQCG | Dynein regulatory complex protein 9; Component of the nexin-dynein regulatory complex (N-DRC), a key regulator of ciliary/flagellar motility which maintains the alignment and integrity of the distal axoneme and regulates microtubule sliding in motile axonemes. Binds calmodulin when cellular Ca(2+) levels are low and thereby contributes to the regulation of calcium and calmodulin-dependent protein kinase IV (CAMK4) activity; contributes to the regulation of CAMK4 signaling cascades. Required for normal axoneme assembly in sperm flagella, normal sperm tail formation and for male fertility. (443 aa) |
| | NME5 | Nucleoside diphosphate kinase homolog 5; Does not seem to have NDK kinase activity. Confers protection from cell death by Bax and alters the cellular levels of several antioxidant enzymes including Gpx5. May play a role in spermiogenesis by increasing the ability of late-stage spermatids to eliminate reactive oxygen species (By similarity). (212 aa) |
| | CATSPER1 | Cation channel sperm-associated protein 1; Voltage-gated calcium channel that plays a central role in calcium-dependent physiological responses essential for successful fertilization, such as sperm hyperactivation, acrosome reaction and chemotaxis towards the oocyte. (780 aa) |
| | PIH1D3 | Protein PIH1D3; Plays a role in cytoplasmic pre-assembly of axonemal dynein. Belongs to the PIH1 family. (214 aa) |
| | TTLL9 | Probable tubulin polyglutamylase TTLL9; Probable tubulin polyglutamylase that forms polyglutamate side chains on tubulin. Acts when complexed with other proteins. By mediating tubulin polyglutamylation, plays a role in the establishment of microtubule heterogeneity in sperm flagella. (439 aa) |
| | SLIRP | SRA stem-loop-interacting RNA-binding protein, mitochondrial; RNA-binding protein that acts as a nuclear receptor corepressor. Probably acts by binding the SRA RNA, and repressing the SRA-mediated nuclear receptor coactivation. Binds the STR7 loop of SRA RNA. Also able to repress glucocorticoid (GR), androgen (AR), thyroid (TR) and VDR-mediated transactivation. (109 aa) |
| | C15orf65 | Uncharacterized protein C15orf65; Chromosome 15 open reading frame 65. (121 aa) |
| | TEX101 | Testis-expressed protein 101; Plays a role in fertilization by controlling binding of sperm to zona pellucida and migration of spermatozoa into the oviduct (By similarity). May play a role in signal transduction and promote protein tyrosine phosphorylation (By similarity). (267 aa) |
| | DNAH11 | Dynein heavy chain 11, axonemal; Force generating protein of respiratory cilia. Produces force towards the minus ends of microtubules. Dynein has ATPase activity; the force-producing power stroke is thought to occur on release of ADP. (4516 aa) |
| | TTC25 | Tetratricopeptide repeat protein 25; Required for the docking of the outer dynein arm to cilia, hence plays an essential role in cilia motility. (672 aa) |
| | MAFIP | MAFF interacting protein. (129 aa) |
| | DNAI1 | Dynein intermediate chain 1, axonemal; Part of the dynein complex of respiratory cilia; Belongs to the dynein intermediate chain family. (703 aa) |
| | FAM71D | Protein FAM71D; Family with sequence similarity 71 member D. (422 aa) |
| | MAFIP-2 | MaFF-interacting protein; Acts as coactivator of MAFF transcriptional activity. Inhibits cell growth and colony-forming efficiency. Belongs to the tektin family. (124 aa) |
| | CABYR | Calcium-binding tyrosine phosphorylation-regulated protein; May function as a regulator of both motility- and head- associated functions such as capacitation and the acrosome reaction. Isoform 1 binds calcium in vitro. Isoform 2 and isoform 6 probably bind calcium. Isoform 3 and isoform 5 do not bind calcium in vitro. Isoform 4 probably does not bind calcium. (493 aa) |
| | LRRC6 | Protein tilB homolog; May play a role in dynein arm assembly, hence essential for proper axoneme building for cilia motility. Belongs to the tilB family. (466 aa) |
| | CATSPERZ | Cation channel sperm-associated protein subunit zeta; Auxiliary component of the CatSper complex, a complex involved in sperm cell hyperactivation. Sperm cell hyperactivation is needed for sperm motility which is essential late in the preparation of sperm for fertilization. Required for a distribution of the CatSper complex in linear quadrilateral nanodomains along the flagellum, maximizing fertilization inside the mammalian female reproductive tract. Together with EFCAB9, associates with the CatSper channel pore and is required for the two-row structure of each single CatSper channel. (200 aa) |
| | TMF1 | TATA element modulatory factor; Potential coactivator of the androgen receptor. Mediates STAT3 degradation. May play critical roles in two RAB6-dependent retrograde transport processes: one from endosomes to the Golgi and the other from the Golgi to the ER. This protein binds the HIV-1 TATA element and inhibits transcriptional activation by the TATA-binding protein (TBP). (1096 aa) |
| | LDHC | L-lactate dehydrogenase C chain; Possible role in sperm motility. (332 aa) |
| | TEKT1 | Tektin-1; Structural component of ciliary and flagellar microtubules. Forms filamentous polymers in the walls of ciliary and flagellar microtubules; Belongs to the tektin family. (418 aa) |
| | ROPN1 | Ropporin-1A; Important for male fertility. With ROPN1L, involved in fibrous sheath integrity and sperm motility, plays a role in PKA- dependent signaling processes required for spermatozoa capacitation. Belongs to the ropporin family. (212 aa) |
| | NME8 | Thioredoxin domain-containing protein 3; Probably required during the final stages of sperm tail maturation in the testis and/or epididymis, where extensive disulfide bonding of fibrous sheath (FS) proteins occurs. May be involved in the reduction of disulfide bonds within the sperm FS components. In vitro, it has neither NDP kinase nor reducing activity on disulfide bonds. (588 aa) |
| | TEKT2 | Tektin-2; Structural component of ciliary and flagellar microtubules. Plays a key role in the assembly or attachment of the inner dynein arm to microtubules in sperm flagella and tracheal cilia. Forms filamentous polymers in the walls of ciliary and flagellar microtubules. (430 aa) |
| | CFAP65 | Cilia- and flagella-associated protein 65; May play a role in sperm motility. Belongs to the CFAP65 family. (1925 aa) |
| | PLA2G3 | Group 3 secretory phospholipase A2; PA2 catalyzes the calcium-dependent hydrolysis of the 2-acyl groups in 3-sn-phosphoglycerides. Shows an 11-fold preference for phosphatidylglycerol over phosphatidylcholine (PC). Preferential cleavage: 1-palmitoyl-2-linoleoyl-phosphatidylethanolamine (PE) > 1- palmitoyl-2-linoleoyl-PC > 1-palmitoyl-2-arachidonoyl-PC > 1-palmitoyl- 2-arachidonoyl-PE. Plays a role in ciliogenesis. (509 aa) |
| | RSPH6A | Radial spoke head 6 homolog A; Belongs to the flagellar radial spoke RSP4/6 family. (717 aa) |
| | GAPDHS | Glyceraldehyde-3-phosphate dehydrogenase, testis-specific; May play an important role in regulating the switch between different pathways for energy production during spermiogenesis and in the spermatozoon. Required for sperm motility and male fertility (By similarity). (408 aa) |
| | CFAP52 | Cilia- and flagella-associated protein 52; May play a role in cell growth and/or survival. Belongs to the CFAP52 family. (620 aa) |
| | TSSK4 | Testis-specific serine/threonine-protein kinase 4; Serine/threonine kinase which is involved in male germ cell development and in mature sperm function (By similarity). May be involved in the Cre/Creb signaling pathway (By similarity). Phosphorylates CREB1 on 'Ser-133' in vitro and can stimulate Cre/Creb pathway in cells. Phosphorylates CREM on 'Ser-116' in vitro (By similarity). Phosphorylates ODF2 on 'Ser-95' (By similarity). Belongs to the protein kinase superfamily. CAMK Ser/Thr protein kinase family. (338 aa) |
| | NPHP3 | Nephrocystin-3; Required for normal ciliary development and function. Inhibits disheveled-1-induced canonical Wnt-signaling activity and may also play a role in the control of non-canonical Wnt signaling which regulates planar cell polarity. Probably acts as a molecular switch between different Wnt signaling pathways. Required for proper convergent extension cell movements. (1330 aa) |
| | SPAG17 | Sperm-associated antigen 17; Component of the central pair apparatus of ciliary axonemes. Plays a critical role in the function and structure of motile cilia. May play a role in endochondral bone formation, most likely because of a function in primary cilia of chondrocytes and osteoblasts. (2223 aa) |
| | CFAP73 | Cilia- and flagella-associated protein 73; May play a role in ciliary/flagellar motility by regulating the assembly and the activity of axonemal inner dynein arm. Belongs to the CFAP73 family. (308 aa) |
| | C11orf88 | UPF0722 protein C11orf88. (196 aa) |
| | PRSS55 | Serine protease 55; Probable serine protease. (352 aa) |
| | SPAG16 | Sperm-associated antigen 16 protein; Necessary for sperm flagellar function. Plays a role in motile ciliogenesis. May help to recruit STK36 to the cilium or apical surface of the cell to initiate subsequent steps of construction of the central pair apparatus of motile cilia (By similarity). (631 aa) |
| | ENKUR | Enkurin; Adapter that functions to localize a calcium-sensitive signal transduction machinery in sperm to a calcium-permeable ion channel. (256 aa) |
| | PRM3 | Protamine-3; Protamines substitute for histones in the chromatin of sperm during the haploid phase of spermatogenesis. They compact sperm DNA into a highly condensed, stable and inactive complex (By similarity). (103 aa) |
| | DNAAF4 | Dynein assembly factor 4, axonemal; Axonemal dynein assembly factor required for ciliary motility. Involved in neuronal migration during development of the cerebral neocortex. May regulate the stability and proteasomal degradation of the estrogen receptors that play an important role in neuronal differentiation, survival and plasticity. (420 aa) |
| | CCDC114 | Coiled-coil domain-containing protein 114; Probable component of the outer dynein arm complex required along the entire axoneme for tethering of outer dynein arms. Belongs to the ODA1/DCC2 family. (670 aa) |
