該基因編碼的蛋白是一個大的（700kda）結構支架蛋白，由一個具有128個a a重復序列的中心結構域組成。編碼蛋白可能在血腦屏障形成、細胞結構和遷移、心肌鈣通道調節、腫瘤轉移等多種過程中發揮作用。編碼該基因的17 kDa亞型存在更短的變體，更短的異構體啟動調節該基因的選擇性剪接的反饋環。[由RefSeq提供，2016年10月]
The protein encoded by this gene is a large (700 kDa) structural scaffold protein consisting of a central domain with 128 aa repeats. The encoded protein may play a role in such diverse processes as blood-brain barrier formation, cell structure and migration, cardiac calcium channel regulation, and tumor metastasis. A much shorter variant encoding a 17 kDa isoform exists for this gene, and the shorter isoform initiates a feedback loop that regulates alternative splicing of this gene. [provided by RefSeq, Oct 2016]