HEADSC 2ndc SEQCRD A G GLY GLY 1 1 C C 0 SEQCRD A G GLY GLY 2 2 C C 0 SEQCRD A L LEU LEU 3 3 C C 0 SEQCRD A R ARG ARG 4 4 C C 0 SEQCRD A S SER SER 5 5 H H 0 SEQCRD A L LEU LEU 6 6 H H 0 SEQCRD A G GLY GLY 7 7 H H 0 SEQCRD A R ARG ARG 8 8 H H 0 SEQCRD A K LYS LYS 9 9 H H 0 SEQCRD A I ILE ILE 10 10 H H 0 SEQCRD A L LEU LEU 11 11 H H 0 SEQCRD A R ARG ARG 12 12 H H 0 SEQCRD A A ALA ALA 13 13 H H 0 SEQCRD A W TRP TRP 14 14 C C 0 SEQCRD A K LYS LYS 15 15 C C 0 SEQCRD A K LYS LYS 16 16 C C 0 SEQCRD A Y TYR TYR 17 17 C C 0 SEQCRD A G GLY GLY 18 18 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA