CatSper2

CATSPER2

Identifiers

CATSPER2, CatSper2, cation channel sperm associated 2

External IDs

MGI: 2387404 HomoloGene: 77423 GeneCards: CATSPER2

Gene ontology
Molecular function	• calcium activated cation channel activity • calcium channel activity • voltage-gated ion channel activity • ion channel activity • protein binding • voltage-gated sodium channel activity
Cellular component	• integral component of membrane • CatSper complex • cell projection • membrane • plasma membrane • cilium • motile cilium
Biological process	• cell differentiation • membrane depolarization during action potential • regulation of ion transmembrane transport • ion transport • multicellular organism development • calcium ion transmembrane transport • transmembrane transport • spermatogenesis • sperm-egg recognition • calcium ion transport • response to progesterone • neuronal action potential • flagellated sperm motility • regulation of postsynaptic membrane potential • sodium ion transmembrane transport • transport
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


117155


212670

Ensembl


ENSG00000166762


ENSMUSG00000033486

UniProt


Q96P56


A2ARP9

RefSeq (mRNA)


NM_001282309 NM_001282310 NM_054020 NM_172095 NM_172097


NM_153075

RefSeq (protein)


NP_001269238 NP_001269239 NP_473361 NP_742093


n/a

Location (UCSC)

Chr 15: 43.63 – 43.67 Mb

Chr 2: 121.39 – 121.41 Mb

PubMed search

^[1]

^[2]

Wikidata

View/Edit Human

View/Edit Mouse

CatSper2, is a protein which in humans is encoded by the CATSPER2 gene.^[3]^[4] CatSper2 is a member of the cation channels of sperm family of protein. The four proteins in this family together form a Ca²⁺-permeant ion channel specific essential for the correct function of sperm cells.^[5]

Function

Calcium ions play a primary role in the regulation of sperm motility. This gene belongs to a family of putative cation channels that are specific to spermatozoa and localize to the flagellum. The protein family features a single repeat with six membrane-spanning segments and a predicted calcium-selective pore region. This gene is part of a tandem repeat on chromosome 15q15; the second copy of this gene is thought to be a pseudogene.^[6]

References

↑ "Human PubMed Reference:".
↑ "Mouse PubMed Reference:".
↑ Quill TA, Ren D, Clapham DE, Garbers DL (October 2001). "A voltage-gated ion channel expressed specifically in spermatozoa". Proc. Natl. Acad. Sci. U.S.A. 98 (22): 12527–31. PMC 60087 . PMID 11675491. doi:10.1073/pnas.221454998.
↑ Clapham DE, Garbers DL (December 2005). "International Union of Pharmacology. L. Nomenclature and structure-function relationships of CatSper and two-pore channels". Pharmacol. Rev. 57 (4): 451–4. PMID 16382101. doi:10.1124/pr.57.4.7.
↑
- "CatSper and Two-Pore Channels: Introduction". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.
↑ "Entrez Gene: CatSper2".

Strausberg RL, Feingold EA, Grouse LH, et al. (2002). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. PMC 139241 . PMID 12477932. doi:10.1073/pnas.242603899.
Zhang D, Chen J, Saraf A, et al. (2006). "Association of Catsper1 or -2 with Ca(v)3.3 leads to suppression of T-type calcium channel activity.". J. Biol. Chem. 281 (31): 22332–41. PMID 16740636. doi:10.1074/jbc.M511288200.
Garbers DL (2001). "Ion channels. Swimming with sperm.". Nature. 413 (6856): 579, 581–2. PMID 11595929. doi:10.1038/35098164.
Quill TA, Ren D, Clapham DE, Garbers DL (2001). "A voltage-gated ion channel expressed specifically in spermatozoa.". Proc. Natl. Acad. Sci. U.S.A. 98 (22): 12527–31. PMC 60087 . PMID 11675491. doi:10.1073/pnas.221454998.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs.". Nat. Genet. 36 (1): 40–5. PMID 14702039. doi:10.1038/ng1285.
Clapham DE, Garbers DL (2005). "International Union of Pharmacology. L. Nomenclature and structure-function relationships of CatSper and two-pore channels.". Pharmacol. Rev. 57 (4): 451–4. PMID 16382101. doi:10.1124/pr.57.4.7.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

Membrane transport protein: ion channels (TC 1A)

Ca²⁺: Calcium channel

Ligand-gated	Inositol trisphosphate receptor 1 2 3 Ryanodine receptor 1 2 3
Voltage-gated	L-type/Ca_vα 1.1 1.2 1.3 1.4 N-type/Ca_vα2.2 P-type/Ca_vα 2.1 Q-type/Ca_vα2.1 R-type/Ca_vα2.3 T-type/Ca_vα 3.1 3.2 3.3 α₂δ-subunits 1 2 β-subunits β1 β2 β3 β4 γ-subunits γ1 γ2 γ3 γ4 Cation channels of sperm 1 2 3 4 Two-pore channel 1 2

Na⁺: Sodium channel

Constitutively active	Epithelial sodium channel α β γ δ
Proton-gated	Amiloride-sensitive cation channel 1 2 3 4
Voltage-gated	Na_vα 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 7A Na_vβ 1 2 3 4

K⁺: Potassium channel

Calcium-activated	BK channel α1 β1 β2 β3 β4 SK channel SK1 SK2 SK3 IK channel IK1 K_Ca 1.1 2.1 2.2 2.3 3.1 4.1 4.2 5.1
Inward-rectifier	K_ATP K_ir 1.1 2.1 2.2 2.3 2.4 2.6 GIRK/K_ir 3.1 3.2 3.3 3.4 K_ir 4.1 4.2 5.1 6.1 6.2 7.1
Tandem pore domain	K2P 1 2 3 4 5 6 7 9 10 12 13 15 16 17 18
Voltage-gated	K_vα1-6 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 2.1 2.2 3.1 3.2 3.3 3.4 4.1 4.2 4.3 5.1 6.1 6.2 6.3 6.4 K_vα7-12 7.1 7.2 7.3 7.4 7.5 8.1 8.2 9.1 9.2 9.3 10.1 10.2 11.1/hERG 11.2 11.3 12.1 12.2 12.3 K_vβ 1 2 3 KCNIP 1 2 3 4 minK/ISK minK/ISK-like MiRP 1 2 3 Shaker gene

Miscellaneous

Cl⁻: Chloride channel	Calcium-activated chloride channels Anoctamin ANO1 Bestrophin 1 2 Chloride Channel Accessory 1 2 3 4 CFTR CLCN 1 2 3 4 5 6 7 KA KB CLIC 1 2 3 4 5 6 L1 CLNS 1A 1B
H⁺: Proton channel	HVCN1
M⁺: CNG cation channel	α 1 2 3 4 β 1 2 3 HCN FC 1 2 3 4
M⁺: TRP cation channel	TRPA (1) TRPC 1 2 3 4 4AP 5 6 7 TRPM 1 2 3 4 5 6 7 8 TRPML 1 2 3 TRPN TRPP 1 2 TRPV 1 2 3 4 5 6
H₂O (+ solutes): Porin	Aquaporin 0 1 2 3 4 5 6 7 8 9 Voltage-dependent anion channel 1 2 3 General bacterial porin family
Cytoplasm: Gap junction	Connexin A GJA1 GJA3 GJA4 GJA5 GJA8 GJA9 GJA10 B GJB1 GJB2 GJB3 GJB4 GJB5 GJB6 GJB7 C GJC1 GJC2 GJC3 D GJD2 GJD3 GJD4 Innexin

By gating mechanism

Ion channel class	Ligand-gated Light-gated Voltage-gated Stretch-activated

see also disorders

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CatSper2

Function

References

Further reading