Collagen, type I, alpha 2

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Aliases COL1A2, OI4, collagen type I alpha 2
External IDs OMIM: 120160 MGI: 88468 HomoloGene: 69 GeneCards: 1278
Genetically Related Diseases
Disease Name References
RNA expression pattern
PBB GE COL1A2 202403 s at tn.png

PBB GE COL1A2 202404 s at tn.png
More reference expression data
Species Human Mouse
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC) Chr 7: 94.39 – 94.43 Mb Chr 6: 4.5 – 4.54 Mb
PubMed search [2] [3]
View/Edit Human View/Edit Mouse

Collagen alpha-2(I) chain is a protein that in humans is encoded by the COL1A2 gene.[1][2]

This gene encodes one of the chains for type I collagen, the fibrillar collagen found in most connective tissues. Mutations in this gene are associated with osteogenesis imperfecta, Ehlers-Danlos syndrome, idiopathic osteoporosis, and atypical Marfan syndrome. Symptoms associated with mutations in this gene, however, tend to be less severe than mutations in the gene for alpha-1 type I collagen since alpha-2 is less abundant. Multiple messages for this gene result from multiple polyadenylation signals, a feature shared by most of the other collagen genes.[3]

See also[edit]


  1. ^ Retief E, Parker MI, Retief AE (May 1985). "Regional chromosome mapping of human collagen genes alpha 2(I) and alpha 1(I) (COLIA2 and COLIA1)". Hum Genet 69 (4): 304–8. doi:10.1007/BF00291646. PMID 3857213. 
  2. ^ Wenstrup RJ, Cohn DH, Cohen T, Byers PH (Jun 1988). "Arginine for glycine substitution in the triple-helical domain of the products of one alpha 2(I) collagen allele (COL1A2) produces the osteogenesis imperfecta type IV phenotype". J Biol Chem 263 (16): 7734–40. PMID 2897363. 
  3. ^ "Entrez Gene: COL1A2 collagen, type I, alpha 2". 

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