PILRB GI:30179913 paired immunoglobulin-like type 2 receptor beta isoform b 1 mgrplllpll lllqppaflq pglcepalse ldrgsgerlp qdlkpaeggp 50 51 vcvflpsrag hpeireaava vhqgdqthhh pgchnhhhle aqqhnhhsrp 100 101 qghrkqralr imapksghch qgcigcrcaq nchfgtavpp ppvveeker