disease:Variations in the promoter region of HTRA1 are the cause of susceptibility to age-related macular degeneration type 7 (ARMD7) [MIM:610149]. ARMD is the leading cause of vision loss and blindness among older individuals in the developed word. It is classified as either dry (nonneovascular) or wet (neovascular). ARMD7 is a wet form, in which new blood vessels form and break beneath the retina. This leakage causes permanent damage to surrounding retinal tissue, distorting and destroying central vision. Wet ARMD is more prevalent among Asians than Caucasians.,function:Protease that regulate the availability of IGFs by cleaving IGF-binding proteins.,similarity:Belongs to the peptidase S1B family.,similarity:Contains 1 IGFBP N-terminal domain.,similarity:Contains 1 Kazal-like domain.,similarity:Contains 1 PDZ (DHR) domain.,tissue specificity:Expressed in a variety of tissues, with strongest expression in placenta.,
Cell membrane . Secreted . Cytoplasm, cytosol . Predominantly secreted (PubMed:15208355). Also found associated with the plasma membrane (PubMed:21297635). .
Widely expressed, with strongest expression in placenta (at protein level). Secreted by synovial fibroblasts. Up-regulated in osteoarthritis and rheumatoid arthritis synovial fluids and cartilage as compared with non-arthritic (at protein level).
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