KCNU1

Protein-coding gene in the species Homo sapiens

KCNU1

Available structures

PDB

Ortholog search: PDBe RCSB

List of PDB id codes
4HPF

Identifiers

Aliases

KCNU1, KCNMC1, KCa5, KCa5.1, Kcnma3, Slo3, potassium calcium-activated channel subfamily U member 1

External IDs

OMIM: 615215 MGI: 1202300 HomoloGene: 7392 GeneCards: KCNU1

Gene location (Mouse)

Chr.	Chromosome 8 (mouse)^[1]

Band	8\|8 A2	Start	26,339,651 bp^[1]
Band	8\|8 A2	End	26,427,967 bp^[1]

RNA expression pattern

Bgee

Human

Mouse (ortholog)

Top expressed in

sperm

bone marrow cells

caput epididymis

substantia nigra

monocyte

mammary gland

breast

subcutaneous adipose tissue

male reproductive gland

prostate

Top expressed in

spermatid

seminiferous tubule

spermatocyte

facial motor nucleus

islet of Langerhans

morula

anterior horn of spinal cord

superior frontal gyrus

blastocyst

neural tube

More reference expression data

BioGPS

n/a

Gene ontology
Molecular function	voltage-gated potassium channel activity large conductance calcium-activated potassium channel activity ion channel activity potassium channel activity voltage-gated ion channel activity calcium-activated potassium channel activity outward rectifier potassium channel activity
Cellular component	integral component of membrane voltage-gated potassium channel complex plasma membrane membrane
Biological process	potassium ion transport regulation of ion transmembrane transport ion transport transmembrane transport potassium ion transmembrane transport sperm-egg recognition reproductive process regulation of membrane potential
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


157855


16532

Ensembl


n/a


ENSMUSG00000031576

UniProt


A8MYU2


O54982

RefSeq (mRNA)


NM_001031836


NM_008432

RefSeq (protein)


NP_001027006


NP_032458

Location (UCSC)

n/a

Chr 8: 26.34 – 26.43 Mb

PubMed search

^[2]

^[3]

Wikidata

View/Edit Human

View/Edit Mouse

Potassium channel, subfamily U, member 1, also known as KCNU1, is a gene encoding the K_Ca5.1 protein.^[4]

Although this channel is structurally related to the calcium-activated potassium channels, it cannot be classified as such since it is activated by high intracellular pH and relatively insensitive to changes in calcium concentrations.^[5]^[6]^[7]

References

^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000031576 – Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Schreiber M, Wei A, Yuan A, Gaut J, Saito M, Salkoff L (February 1998). "Slo3, a novel pH-sensitive K⁺ channel from mammalian spermatocytes". J. Biol. Chem. 273 (6): 3509–16. doi:10.1074/jbc.273.6.3509. PMID 9452476.
^ Wei AD, Gutman GA, Aldrich R, Chandy KG, Grissmer S, Wulff H (2005). "International Union of Pharmacology. LII. Nomenclature and molecular relationships of calcium-activated potassium channels". Pharmacol Rev. 57 (4): 463–72. doi:10.1124/pr.57.4.9. PMID 16382103. S2CID 8290401.
^ Zhang X, Zeng X, Xia XM, Lingle CJ (September 2006). "pH-regulated Slo3 K⁺ channels: properties of unitary currents". J. Gen. Physiol. 128 (3): 301–15. doi:10.1085/jgp.200609551. PMC 2151565. PMID 16940554.
^ Zhang X, Zeng X, Lingle CJ (September 2006). "Slo3 K⁺ channels: voltage and pH dependence of macroscopic currents". J. Gen. Physiol. 128 (3): 317–36. doi:10.1085/jgp.200609552. PMC 2151566. PMID 16940555.

Celia M. Santi, Alice Butler, Julia Kuhn, Aguan Wei, Lawrence Salkoff. Bovine and mouse SLO3 K+ channels: Evolutionary divergence points to a RCK1 region of critical function. J Biol Chem.284: 21589-98 (2009).

External links

Overview of all the structural information available in the PDB for UniProt: A8MYU2 (Potassium channel subfamily U member 1) at the PDBe-KB.

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. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
Kimura K, Wakamatsu A, Suzuki Y, et al. (2006). "Diversification of transcriptional modulation: large-scale identification and characterization of putative alternative promoters of human genes". Genome Res. 16 (1): 55–65. doi:10.1101/gr.4039406. PMC 1356129. PMID 16344560.
Schreiber M, Wei A, Yuan A, et al. (1998). "Slo3, a novel pH-sensitive K+ channel from mammalian spermatocytes". J. Biol. Chem. 273 (6): 3509–16. doi:10.1074/jbc.273.6.3509. PMID 9452476.
Nusbaum C, Mikkelsen TS, Zody MC, et al. (2006). "DNA sequence and analysis of human chromosome 8". Nature. 439 (7074): 331–5. Bibcode:2006Natur.439..331N. doi:10.1038/nature04406. PMID 16421571.
Wei AD, Gutman GA, Aldrich R, et al. (2005). "International Union of Pharmacology. LII. Nomenclature and molecular relationships of calcium-activated potassium channels". Pharmacol. Rev. 57 (4): 463–72. doi:10.1124/pr.57.4.9. PMID 16382103. S2CID 8290401.

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