Collagen alpha-1(XI) chain is a protein that in humans is encoded by the COL11A1gene.[5][6]
Function
The COL11A1 gene encodes one of the two alpha chains of type XI collagen, a minor fibrillar collagen. Type XI collagen is a heterotrimer but the third alpha chain is a post-translationally modified alpha 1 type II chain. Three transcript variants encoding different isoforms have been identified for this gene.[6]
Stickler syndrome, type II is an autosomal dominant condition caused by a mutation in the COL11A1 gene. Features of Stickler syndrome type II include: sensorineural hearing loss, facial features (flat facial profile, anteverted nares, micrognathia), cleft palate, visual disturbances (type 2 vitreous anomaly, childhood-onset myopia, glaucoma, cataracts and retinal detachment), spondyloepiphyseal dysplasia, and arthropathy.
Hanson IM, Gorman P, Lui VC, et al. (1990). "The human alpha 2(XI) collagen gene (COL11A2) maps to the centromeric border of the major histocompatibility complex on chromosome 6". Genomics. 5 (4): 925–31. doi:10.1016/0888-7543(89)90135-3. PMID2591970.
Henry I, Bernheim A, Bernard M, et al. (1989). "Mapping of a human fibrillar collagen gene, pro alpha 1 (XI) (COL11A1), to the p21 region of chromosome 1". Genomics. 3 (1): 87–90. doi:10.1016/0888-7543(88)90165-6. PMID3220479.
Dharmavaram RM, Baldwin CT, Reginato AM, Jimenez SA (1993). "Amplification of cDNAs for human cartilage-specific types II, IX and XI collagens from chondrocytes and Epstein-Barr virus-transformed lymphocytes". Matrix. 13 (2): 125–33. doi:10.1016/s0934-8832(11)80071-5. PMID8388073.
Majava M, Hoornaert KP, Bartholdi D, et al. (2007). "A report on 10 new patients with heterozygous mutations in the COL11A1 gene and a review of genotype-phenotype correlations in type XI collagenopathies". Am. J. Med. Genet. A. 143 (3): 258–64. doi:10.1002/ajmg.a.31586. PMID17236192. S2CID43244117.