HEADSC 2ndd SEQCRD A S SER SER 1 1 C C 0 SEQCRD A C CYS CYS 2 2 C C 0 SEQCRD A K LYS LYS 3 3 C C 0 SEQCRD A K LYS LYS 4 4 C C 0 SEQCRD A E GLU GLU 5 5 C C 0 SEQCRD A C CYS CYS 6 6 C C 0 SEQCRD A S SER SER 7 7 C C 0 SEQCRD A G GLY GLY 8 8 C C 0 SEQCRD A S SER SER 9 9 C C 0 SEQCRD A R ARG ARG 10 10 C C 0 SEQCRD A R ARG ARG 11 11 C C 0 SEQCRD A T THR THR 12 12 H H 0 SEQCRD A K LYS LYS 13 13 H H 0 SEQCRD A K LYS LYS 14 14 H H 0 SEQCRD A C CYS CYS 15 15 H H 0 SEQCRD A M MET MET 16 16 H H 0 SEQCRD A Q GLN GLN 17 17 H H 0 SEQCRD A K LYS LYS 18 18 H H 0 SEQCRD A C CYS CYS 19 19 H H 0 SEQCRD A N ASN ASN 20 20 H H 0 SEQCRD A R ARG ARG 21 21 H H 0 SEQCRD A E GLU GLU 22 22 H H 0 SEQCRD A H HIS HIS 23 23 H H 0 SEQCRD A G GLY GLY 24 24 C C 0 SEQCRD A H HIS HIS 25 25 C C 0 SEQCRD A X NH2 HIS 26 25 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA