VPREB1 GI:9507239 immunoglobulin iota chain precursor 1 mswapvllml fvyctgcgpq pvlhqppams salgttirlt ctlrndhdig 50 51 vysvywyqqr pghpprfllr yfsqsdksqg pqvpprfsgs kdvarnrgyl 100 101 siselqpede amyycamgar ssekeerere weeemeptaa rtrvp