HEADSC 5l34 SEQCRD A C CYS CYS 1 1 C C 0 SEQCRD A R ARG ARG 2 2 C C 0 SEQCRD A X DTR DTR 3 3 C C 0 SEQCRD A T THR THR 4 4 C C 0 SEQCRD A P PRO PRO 5 5 C C 0 SEQCRD A V VAL VAL 6 6 C C 0 SEQCRD A C CYS CYS 7 7 C C 0 SEQCRD A X NH2 NH2 8 8 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA