HEADSC 2n7n SEQCRD A X ACE ACE 1 3 C C 0 SEQCRD A X NLE NLE 2 4 C C 0 SEQCRD A D ASP ASP 3 5 C C 0 SEQCRD A P PRO PRO 4 6 C C 0 SEQCRD A P PRO PRO 5 7 C C 0 SEQCRD A X DPN PHE 6 8 C C 0 SEQCRD A R ARG ARG 7 9 C C 0 SEQCRD A W TRP TRP 8 10 C C 0 SEQCRD A K LYS LYS 9 11 C C 0 SEQCRD A X NH2 NH2 10 12 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA