该基因属于血管抑制素结合蛋白的motin家族，具有保守的螺旋结构域和C末端PDZ结合基序编码蛋白主要在毛细血管内皮细胞和胎盘大血管中表达，可能介导血管抑制素对血管形成的抑制作用，以及在新生血管形成过程中内皮细胞向生长因子的迁移。选择性剪接导致编码不同亚型的多个转录变体[由RefSeq提供，2008年7月]
This gene belongs to the motin family of angiostatin binding proteins characterized by conserved coiled-coil domains and C-terminal PDZ binding motifs. The encoded protein is expressed predominantly in endothelial cells of capillaries as well as larger vessels of the placenta where it may mediate the inhibitory effect of angiostatin on tube formation and the migration of endothelial cells toward growth factors during the formation of new blood vessels. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]