GJA4

Identifiers

GJA4, CX37, gap junction protein alpha 4

External IDs

OMIM: 121012 MGI: 95715 HomoloGene: 1556 GeneCards: GJA4

Gene location (Human)

Chr.	Chromosome 1 (human)^[1]

Band	1p34.3	Start	34,792,999 bp^[1]
Band	1p34.3	End	34,795,747 bp^[1]

Gene location (Mouse)

Chr.	Chromosome 4 (mouse)^[2]

Band	4 D2.2\|4 61.47 cM	Start	127,205,214 bp^[2]
Band	4 D2.2\|4 61.47 cM	End	127,207,832 bp^[2]

RNA expression pattern

Bgee

Human

Mouse (ortholog)

Top expressed in

right lung

vena cava

left ventricle

left coronary artery

right lobe of thyroid gland

right coronary artery

subcutaneous adipose tissue

right ventricle

left uterine tube

tibial nerve

Top expressed in

external carotid artery

internal carotid artery

secondary oocyte

right lung

right lung lobe

left lung

ankle joint

semi-lunar valve

left lung lobe

yolk sac

More reference expression data

BioGPS


More reference expression data

Gene ontology
Molecular function	protein binding
Cellular component	integral component of membrane gap junction cell junction plasma membrane integral component of plasma membrane connexin complex membrane
Biological process	cell communication cell-cell signaling blood vessel development response to pain calcium ion transport cell-cell junction assembly endothelium development
Sources:Amigo / QuickGO

Orthologs

Species

Human

Mouse

Entrez


2701


14612

Ensembl


ENSG00000187513


ENSMUSG00000050234

UniProt


P35212


P28235

RefSeq (mRNA)


NM_002060


NM_008120

RefSeq (protein)


NP_002051


NP_032146

Location (UCSC)

Chr 1: 34.79 – 34.8 Mb

Chr 4: 127.21 – 127.21 Mb

PubMed search

^[3]

^[4]

Wikidata

View/Edit Human

View/Edit Mouse

Gap junction alpha-4 protein, also known as Connexin-37 or Cx37, is a protein that in humans is encoded by the GJA4 gene.^[5]^[6]^[7] This protein, like other Connexin proteins, forms connections between cells known as gap junctions. Connexin 37 can be found in many tissues including the ovary,^[8] heart,^[9] and kidney.^[10]

References

Andrew L Harris; Darren Locke (2009). Connexins, A Guide. New York: Springer. p. 574. ISBN 978-1-934115-46-6.
Beyer EC, Paul DL, Goodenough DA (July 1990). "Connexin family of gap junction proteins". The Journal of Membrane Biology. 116 (3): 187–94. doi:10.1007/BF01868459. PMID 2167375. S2CID 43264684.
Haefliger JA, Bruzzone R, Jenkins NA, Gilbert DJ, Copeland NG, Paul DL (January 1992). "Four novel members of the connexin family of gap junction proteins. Molecular cloning, expression, and chromosome mapping". The Journal of Biological Chemistry. 267 (3): 2057–64. doi:10.1016/S0021-9258(18)46052-8. PMID 1370487.
Risek B, Guthrie S, Kumar N, Gilula NB (February 1990). "Modulation of gap junction transcript and protein expression during pregnancy in the rat". The Journal of Cell Biology. 110 (2): 269–82. doi:10.1083/jcb.110.2.269. PMC 2116004. PMID 1688855.
Willecke K, Jungbluth S, Dahl E, Hennemann H, Heynkes R, Grzeschik KH (December 1990). "Six genes of the human connexin gene family coding for gap junctional proteins are assigned to four different human chromosomes". European Journal of Cell Biology. 53 (2): 275–80. PMID 1964417.
Van Camp G, Coucke P, Speleman F, Van Roy N, Beyer EC, Oostra BA, Willems PJ (November 1995). "The gene for human gap junction protein connexin37 (GJA4) maps to chromosome 1p35.1, in the vicinity of D1S195". Genomics. 30 (2): 402–3. PMID 8586454.
Krutovskikh V, Mironov N, Yamasaki H (August 1996). "Human connexin 37 is polymorphic but not mutated in tumours". Carcinogenesis. 17 (8): 1761–3. CiteSeerX 10.1.1.610.8446. doi:10.1093/carcin/17.8.1761. PMID 8761439.
Simon AM, Goodenough DA, Li E, Paul DL (February 1997). "Female infertility in mice lacking connexin 37". Nature. 385 (6616): 525–9. Bibcode:1997Natur.385..525S. doi:10.1038/385525a0. PMID 9020357. S2CID 4363114.
Krenacs T, Rosendaal M (April 1998). "Connexin43 gap junctions in normal, regenerating, and cultured mouse bone marrow and in human leukemias: their possible involvement in blood formation". The American Journal of Pathology. 152 (4): 993–1004. PMC 1858239. PMID 9546360.
van Rijen HV, van Kempen MJ, Postma S, Jongsma HJ (April 1998). "Tumour necrosis factor alpha alters the expression of connexin43, connexin40, and connexin37 in human umbilical vein endothelial cells". Cytokine. 10 (4): 258–64. doi:10.1006/cyto.1997.0287. PMID 9617570.
Boerma M, Forsberg L, Van Zeijl L, Morgenstern R, De Faire U, Lemne C, Erlinge D, Thulin T, Hong Y, Cotgreave IA (August 1999). "A genetic polymorphism in connexin 37 as a prognostic marker for atherosclerotic plaque development". Journal of Internal Medicine. 246 (2): 211–8. doi:10.1046/j.1365-2796.1999.00564.x. PMID 10447790.
Saito T, Krutovskikh V, Marion MJ, Ishak KG, Bennett WP, Yamasaki H (April 2000). "Human hemangiosarcomas have a common polymorphism but no mutations in the connexin37 gene". International Journal of Cancer. 86 (1): 67–70. doi:10.1002/(SICI)1097-0215(20000401)86:1<67::AID-IJC10>3.0.CO;2-1. PMID 10728596.
Suzuki Y, Taira H, Tsunoda T, Mizushima-Sugano J, Sese J, Hata H, Ota T, Isogai T, Tanaka T, Morishita S, Okubo K, Sakaki Y, Nakamura Y, Suyama A, Sugano S (May 2001). "Diverse transcriptional initiation revealed by fine, large-scale mapping of mRNA start sites". EMBO Reports. 2 (5): 388–93. doi:10.1093/embo-reports/kve085. PMC 1083880. PMID 11375929.
Tsai MY, Lan KC, Huang KE, Huang FJ, Kung FT, Chang SY (December 2003). "Significance of mRNA levels of connexin37, connexin43, and connexin45 in luteinized granulosa cells of controlled hyperstimulated follicles". Fertility and Sterility. 80 (6): 1437–43. doi:10.1016/j.fertnstert.2003.05.015. PMID 14667880.
Seul KH, Kang KY, Lee KS, Kim SH, Beyer EC (July 2004). "Adenoviral delivery of human connexin37 induces endothelial cell death through apoptosis". Biochemical and Biophysical Research Communications. 319 (4): 1144–51. doi:10.1016/j.bbrc.2004.05.097. PMID 15194487.
Kameritsch P, Khandoga N, Nagel W, Hundhausen C, Lidington D, Pohl U (April 2005). "Nitric oxide specifically reduces the permeability of Cx37-containing gap junctions to small molecules". Journal of Cellular Physiology. 203 (1): 233–42. doi:10.1002/jcp.20218. PMID 15481066.

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

References

Further reading