CACNA1I

Identifiers

CACNA1I, Cav3.3, ca(v)3.3, calcium voltage-gated channel subunit alpha1 I

External IDs

MGI: 2178051 HomoloGene: 69331 GeneCards: CACNA1I

Targeted by Drug

Gene ontology
Molecular function	• voltage-gated calcium channel activity • calcium channel activity • low voltage-gated calcium channel activity • voltage-gated ion channel activity • ion channel activity • protein binding
Cellular component	• voltage-gated calcium channel complex • integral component of membrane • membrane • plasma membrane
Biological process	• flagellated sperm motility • membrane depolarization during action potential • calcium ion import • regulation of ion transmembrane transport • ion transport • positive regulation of calcium ion-dependent exocytosis • sleep • calcium ion transmembrane transport • transmembrane transport • transport • calcium ion transport • signal transduction • neuronal action potential
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


8911


239556

Ensembl


ENSG00000100346


ENSMUSG00000022416

UniProt


Q9P0X4


n/a

RefSeq (mRNA)


NM_001003406 NM_021096


NM_001044308

RefSeq (protein)


NP_001003406.1 NP_066919.2


n/a

Location (UCSC)

Chr 22: 39.57 – 39.69 Mb

Chr 15: 80.29 – 80.4 Mb

PubMed search

^[2]

^[3]

Wikidata

View/Edit Human

View/Edit Mouse

Calcium channel, voltage-dependent, T type, alpha 1I subunit, also known as CACNA1I or Ca_v3.3 is a protein which in humans is encoded by the CACNA1I gene.^[4]^[5]^[6]

Function

Voltage-dependent calcium channels can be distinguished based on their voltage-dependence, deactivation, and single-channel conductance. Low-voltage-activated calcium channels are referred to as 'T' type because their currents are both transient, owing to fast inactivation, and tiny, owing to small conductance. T-type channels are thought to be involved in pacemaker activity, low-threshold calcium spikes, neuronal oscillations and resonance, and rebound burst firing.^[4]

References

↑ "Drugs that physically interact with Voltage-dependent T-type calcium channel subunit alpha-1I view/edit references on wikidata".
↑ "Human PubMed Reference:".
↑ "Mouse PubMed Reference:".
1 2 "Entrez Gene: CACNA1H calcium channel, voltage-dependent, T type, alpha 1I subunit".
↑ Mittman S, Guo J, Emerick MC, Agnew WS (July 1999). "Structure and alternative splicing of the gene encoding alpha1I, a human brain T calcium channel alpha1 subunit". Neurosci. Lett. 269 (3): 121–4. doi:10.1016/S0304-3940(99)00319-5. PMID 10454147.
↑ Catterall WA, Perez-Reyes E, Snutch TP, Striessnig J (December 2005). "International Union of Pharmacology. XLVIII. Nomenclature and structure-function relationships of voltage-gated calcium channels". Pharmacol. Rev. 57 (4): 411–25. doi:10.1124/pr.57.4.5. PMID 16382099.

External links

CACNA1i protein, human at the US National Library of Medicine Medical Subject Headings (MeSH)

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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CACNA1I

Function

See also

References

External links