HEADSC 5vr1 SEQCRD A D ASP ASP 1 1 C C 0 SEQCRD A C CYS CYS 2 2 C C 0 SEQCRD A C CYS CYS 3 3 C C 0 SEQCRD A X HYP HYP 4 4 C C 0 SEQCRD A C CYS CYS 5 5 C C 0 SEQCRD A X HYP HYP 6 6 C C 0 SEQCRD A A ALA ALA 7 7 C C 0 SEQCRD A G GLY GLY 8 8 C C 0 SEQCRD A A ALA ALA 9 9 C C 0 SEQCRD A V VAL VAL 10 10 C C 0 SEQCRD A R ARG ARG 11 11 C C 0 SEQCRD A C CYS CYS 12 12 C C 0 SEQCRD A R ARG ARG 13 13 H H 0 SEQCRD A F PHE PHE 14 14 H H 0 SEQCRD A A ALA ALA 15 15 H H 0 SEQCRD A C CYS CYS 16 16 H H 0 SEQCRD A C CYS CYS 17 17 H H 0 SEQCRD A X NH2 NH2 18 18 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA