A point mutation leads to an unpaired cysteine residue and a molecular weight polymorphism of u functional platelet |-i3 mtegrin subunit* The Sra alloantigen system on GPTTTn - Suntoso, S; Kalb, R; Kroll, I I; Walka, M; Kiefel, V; Mueller-Eckhaidt, C; Newman, P J (J Biol Chem, 1994)