The information on this page was automatically extracted from online scientific databases.
From NCBI Gene:
The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins and the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions, where they appear to provide protective functions. This gene encodes a cystatin from the type 2 family, which is down-regulated in metastatic breast tumor cells as compared to primary tumor cells. Loss of expression is likely associated with the progression of a primary tumor to a metastatic phenotype. [provided by RefSeq, Jul 2008]
High affinity inhibitor for cathepsin L, cathepsin L2 (cathepsin V), and legumain (PubMed:30425301). Involved in the regulation of epidermal cornification, and hair follicle morphogenesis and maintenance (PubMed:30425301).
From NCBI Gene:
- ECTODERMAL DYSPLASIA 15, HYPOHIDROTIC/HAIR TYPE
Ectodermal dysplasia 15, hypohidrotic/hair type (ECTD15): A form of ectodermal dysplasia, a disorder due to abnormal development of two or more ectodermal structures. ECTD15 is an autosomal recessive form characterized by hypotrichosis and absence of sweating except with extreme exercise. Skin is dry from birth and eczematous lesions may develop in adulthood. Other features include blepharitis and photophobia. [MIM:618535]