功能May be important in developing and maintaining corneal transparency and for the structure of the stromal matrix.
组织特异性Cornea. Increased expression in the stroma of keratoconus corneas. Also detected in trachea, and in low levels, in intestine, skeletal muscle, ovary, lung and putamen.
疾病相关Defects in KERA are the cause of the autosomal recessive cornea plana 2 (CNA2) [MIM:217300]. In CNA2, the forward convex curvature is flattened, leading to a decrease in refraction, reduced visual activity, extreme hyperopia (usually plus 10 d or more), hazy corneal limbus, opacities in the corneal parenchyma, and marked arcus senilis (often detected at an early age). CNA2 is a rare disorder with a worldwide distribution, but a high prevalence in the Finnish population.
序列相似性Belongs to the small leucine-rich proteoglycan (SLRP) family. SLRP class II subfamily. Contains 10 LRR (leucine-rich) repeats. Contains 1 LRRNT domain.
翻译后修饰Binds keratan sulfate chains.
细胞定位Secreted > extracellular space > extracellular matrix.