COL11A1 May play an important role in fibrillogenesis by controlling lateral growth of collagen II fibrils. Defects in COL11A1 are the cause of Stickler syndrome type 2 (STL2); also known as Stickler syndrome vitreous type 2. STL2 is an autosomal dominant form of Stickler syndrome, an inherited disorder that associates ocular signs with more or less complete forms of Pierre Robin sequence, bone disorders and sensorineural deafness. Ocular disorders may include juvenile cataract, myopia, strabismus, vitreoretinal or chorioretinal degeneration, retinal detachment, and chronic uveitis. Robin sequence includes an opening in the roof of the mouth (a cleft palate), a large tongue (macroglossia), and a small lower jaw (micrognathia). Bones are affected by slight platyspondylisis and large, often defective epiphyses. Juvenile joint laxity is followed by early signs of arthrosis. The degree of hearing loss varies among affected individuals and may become more severe over time. Syndrome expressivity is variable. Defects in COL11A1 are the cause of Marshall syndrome (MRSHS). It is an autosomal dominant disorder characterized by ocular abnormalities, deafness, craniofacial anomalies, and anhidrotic ectodermal dysplasia. Clinical features include short stature; flat or retruded midface with short, depressed nose, flat nasal bridge and anteverted nares; cleft palate with or without the Pierre Robin sequence; appearance of large eyes with ocular hypertelorism; cataracts, either congenital or juvenile; esotropia; high myopia; sensorineural hearing loss; spondyloepiphyseal abnormalities; calcification of the falx cerebri; ectodermal abnormalities, including defects in sweating and dental structures. Defects in COL11A1 are the cause of fibrochondrogenesis type 1 (FBCG1). A severe short-limbed skeletal dysplasia characterized by broad long-bone metaphyses, pear-shaped vertebral bodies, and characteristic morphology of the growth plate, in which the chondrocytes have a fibroblastic appearance and there are regions of fibrous cartilage extracellular matrix. Clinical features include a flat midface with a small nose and anteverted nares, significant shortening of all limb segments but relatively normal hands and feet, and a small bell-shaped thorax with a protuberant abdomen. Belongs to the fibrillar collagen family. 3 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Extracellular matrix; Secreted; Secreted, signal peptide
Chromosomal Location of Human Ortholog: 3 F3|3 49.35 cM
Cellular Component:  collagen trimer; collagen type XI trimer; collagen-containing extracellular matrix; extracellular matrix; extracellular region; extracellular space
Molecular Function:  extracellular matrix structural constituent; extracellular matrix structural constituent conferring tensile strength; heparan sulfate binding; heparin binding; metal ion binding
Biological Process:  cartilage condensation; cartilage development; chondrocyte development; collagen fibril organization; detection of mechanical stimulus involved in sensory perception of sound; embryonic skeletal system morphogenesis; extracellular matrix organization; heart morphogenesis; inner ear morphogenesis; proteoglycan metabolic process; sensory perception of sound; skeletal system morphogenesis; tendon development; ventricular cardiac muscle tissue morphogenesis; visual perception
Reference #:  Q61245 (UniProtKB)
Alt. Names/Synonyms: a1(XI) collagen; C530001D20Rik; cho; chondrodysplasia; COBA1; Col11a1; Collagen alpha-1(XI) chain; collagen, type XI, alpha 1; OTTMUSP00000025652; pro-alpha1(XI) collagen; procollagen, type XI, alpha 1
Gene Symbols: Col11a1
Molecular weight: 181,032 Da
Basal Isoelectric point: 5.09  Predict pI for various phosphorylation states
Select Structure to View Below


Protein Structure Not Found.

Cross-references to other databases:  STRING  |  Reactome  |  BioGPS  |  Pfam  |  Phospho.ELM  |  NetworKIN  |  UniProtKB  |  Entrez-Gene  |  Ensembl Gene