Collagen alpha-2(XI) chain
Domain
The C-terminal propeptide, also known as COLFI domain, have crucial roles in tissue growth and repair by controlling both the intracellular assembly of procollagen molecules and the extracellular assembly of collagen fibrils. It binds a calcium ion which is essential for its function (By similarity).
Function
May play an important role in fibrillogenesis by controlling lateral growth of collagen II fibrils.
Involvement in disease
Otospondylomegaepiphyseal dysplasia, autosomal dominant
OSMEDA
An autosomal dominant form of otospondylomegaepiphyseal dysplasia, a disorder characterized by sensorineural deafness, enlarged epiphyses, mild platyspondyly, and disproportionate shortness of the limbs. Total body length is normal. Typical facial features are mid-face hypoplasia, short upturned nose and depressed nasal bridge. Most patients have Pierre Robin sequence including an opening in the roof of the mouth (cleft palate) and a small lower jaw (micrognathia). Ocular symptoms are absent. Some patients have early-onset osteoarthritis.
None
The disease is caused by variants affecting the gene represented in this entry.
Otospondylomegaepiphyseal dysplasia, autosomal recessive
OSMEDB
An autosomal recessive form of otospondylomegaepiphyseal dysplasia, a disorder characterized by sensorineural deafness, enlarged epiphyses, mild platyspondyly, and disproportionate shortness of the limbs. Total body length is normal. Typical facial features are mid-face hypoplasia, short upturned nose and depressed nasal bridge. Most patients have Pierre Robin sequence including an opening in the roof of the mouth (cleft palate) and a small lower jaw (micrognathia). Ocular symptoms are absent. Some patients have early-onset osteoarthritis.
None
The disease is caused by variants affecting the gene represented in this entry.
Deafness, autosomal dominant, 13
DFNA13
A form of non-syndromic sensorineural hearing loss. Sensorineural deafness results from damage to the neural receptors of the inner ear, the nerve pathways to the brain, or the area of the brain that receives sound information.
None
The disease is caused by variants affecting the gene represented in this entry.
Deafness, autosomal recessive, 53
DFNB53
A form of non-syndromic sensorineural deafness characterized by prelingual, profound, non-progressive hearing loss. Sensorineural deafness results from damage to the neural receptors of the inner ear, the nerve pathways to the brain, or the area of the brain that receives sound information.
None
The disease is caused by variants affecting the gene represented in this entry.
Fibrochondrogenesis 2
FBCG2
A severe skeletal dysplasia characterized by a flat midface, short long bones, short ribs with broad metaphyses, and vertebral bodies that show distinctive hypoplastic posterior ends and rounded anterior ends, giving the vertebral bodies a pinched appearance on lateral radiographic views. The chest is small, causing perinatal respiratory problems which usually, but not always, result in lethality. Affected individuals who survive the neonatal period have high myopia, mild to moderate hearing loss, and severe skeletal dysplasia.
None
The disease is caused by variants affecting the gene represented in this entry.
Post-translational modifications
Prolines at the third position of the tripeptide repeating unit (G-X-Y) are hydroxylated in some or all of the chains.
A disulfide-bonded peptide called proline/arginine-rich protein or PARP is released from the N-terminus during extracellular processing and is subsequently retained in the cartilage matrix from which it can be isolated in significant amounts.
Sequence Similarities
Belongs to the fibrillar collagen family.
Cellular localization
- Secreted
- Extracellular space
- Extracellular matrix
Alternative names
Collagen alpha-2(XI) chain, COL11A2