The Stabilin-2 (STAB2) gene with 69 exons spanning 180kbp is mapped to human chromosome 12. Stabilin-2, also known as fasciclin, EGF-like, laminin-type EGF-like, and link domain-containing scavenger receptor-2 (FEEL-2) or hyaluronan receptor for endocytosis (HARE), is a large receptor containing 2551 amino acids belonging to the family of fasciclin-like hyaluronan receptor homologues. STAB2 transcript is expressed in spleen, bone marrow and liver.
Synonyms: Anti-190 kDa hyaluronan receptor for endocytosis; Anti-FAS1 EGF-like and X-link domain-containing adhesion molecule 2; Anti-FEEL-2; Anti-Fasciclin, EGF-like, laminin-type EGF-like and link domain-containing scavenger receptor 2; Anti-Hyaluronan receptor for endocytosis; Anti-Stabilin-2
Storage: -20C
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Biochem Physiol Actions: The hyaluronan receptor for endocytosis (HARE) or stabilin-2 functions as a mammalian endocytic clearance receptor for hyaluronic acid (HA), heparin, advanced glycation end-products, acetylated and oxidized low-density lipoproteins and collagen N-terminal propeptides. HARE/Stab2 facilitates binding of lymphocyte to sinusoidal endothelium by interacting with aMß2 and a5ß5 integrins. The encoded protein mediates phagocytosis of bacteria and apoptotic cells displaying cell surface phosphatidylserine. In mice, Stab-2 might assist in separating hyaluronan from the lymph or the blood circulation through the network of endothelial sinuses. The protein also exhibits scavenger receptor activity.
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