HEADSC 5lff SEQCRD A R ARG ARG 1 1 C C 0 SEQCRD A A ALA ALA 2 2 C C 0 SEQCRD A C CYS CYS 3 3 C C 0 SEQCRD A R ARG ARG 4 4 C C 0 SEQCRD A F PHE PHE 5 5 C C 0 SEQCRD A F PHE PHE 6 6 C C 0 SEQCRD A C CYS CYS 7 7 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA