Integrin alpha 9

Protein-coding gene in the species Homo sapiens From Wikipedia, the free encyclopedia

Integrin alpha-9 is a protein that in humans is encoded by the ITGA9 gene.[5][6][7] Cytogenetic location: 3p22.2 [8]

AliasesITGA9, ALPHA-RLC, ITGA4L, RLC, integrin subunit alpha 9
End37,823,507 bp[1]
Quick facts ITGA9, Identifiers ...
ITGA9
Identifiers
AliasesITGA9, ALPHA-RLC, ITGA4L, RLC, integrin subunit alpha 9
External IDsOMIM: 603963; MGI: 104756; HomoloGene: 1664; GeneCards: ITGA9; OMA:ITGA9 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_002207

NM_001113514
NM_133721

RefSeq (protein)

NP_002198

NP_001106986
NP_598482

Location (UCSC)Chr 3: 37.45 – 37.82 MbChr 9: 118.44 – 118.73 Mb
PubMed search[3][4]
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Function

This gene encodes an alpha integrin. Integrins are heterodimeric integral membrane glycoproteins composed of an alpha chain and a beta chain that mediate cell-cell and cell-matrix adhesion. The protein encoded by this gene, when bound to the beta 1 chain, forms an integrin that is a receptor for tenascin-C, VCAM1 and osteopontin. Expression of this gene has been found to be upregulated in small cell lung cancers.[7]

Interactions

The α9 subunit forms a heterodimeric complex with a β1 subunit to form the α9β1 integrin. This integrin participates in cell adhesion with various ligands in the extracellular matrix (ECM), including extra domain A (EDA) fibronectin, tenascin-C, ADAMs, EMELIN1, osteopontin, and VEGF.[9] α9β1 binding is independent of the RGD peptide sequence.

References

Further reading

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