Biology:Opticin

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A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Opticin is a protein that in humans is encoded by the OPTC gene.[1][2]

Opticin belongs to class III of the small leucine-rich repeat protein (SLRP) family. Members of this family are typically associated with the extracellular matrix. Opticin is present in significant quantities in the vitreous of the eye and also localizes to the cornea, iris, ciliary body, optic nerve, choroid, retina, and fetal liver. Opticin may noncovalently bind collagen fibrils and regulate fibril morphology, spacing, and organization. The opticin gene is mapped to a region of chromosome 1 that is associated with the inherited eye diseases age-related macular degeneration (AMD) and posterior column ataxia with retinosa pigmentosa (AXPC1).[2]

References

  1. "Identification in vitreous and molecular cloning of opticin, a novel member of the family of leucine-rich repeat proteins of the extracellular matrix". J Biol Chem 275 (3): 2123–9. Feb 2000. doi:10.1074/jbc.275.3.2123. PMID 10636917. 
  2. 2.0 2.1 "Entrez Gene: OPTC opticin". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=26254. 

Further reading