关于Chondroadherin: Chondroadherin is a secreted protein that belongs to the small leucine-rich proteoglycan (SLRP) family of SLRP class IV subfamily. Chondroadherin contains one LRRCT domain, one LRRNT domain, and nine LRR (leucine-rich) repeats. It presents in chondrocytes at all ages. Chondroadherin is initially found as a 36-kD matrix protein isolated from bovine cartilage. It is shown to mediate chondrocyte-matrix interactions. Chondroadherin promotes attachment of chondrocytes, fibroblasts, and osteoblasts. This binding is mediated (at least for chondrocytes and fibroblasts) by the integrin α2β1. Chondroadherin may play an important role in the regulation of chondrocyte growth and proliferation.