An abnormal protein C (protein C Yonago) with an amino acid substitution of Gly for Arg-15 caused by a single base mutation of C to G in codon 57 (CGG-→GGG): detoriated calcium-dependent conformation of the Γ-carboxy-glutamic acid domain relative to thrombotic tendency - Mimuro, J; Matsumura, S; Kaneko, M; Yoshitake, S; Iijima, K; Nakamura, K; Sakata, Y; Matsuda, M (Int J Haematol, 1993)