HEADSC 2n8d SEQCRD A W TRP TRP 1 1 C C 0 SEQCRD A D ASP ASP 2 2 C C 0 SEQCRD A P PRO PRO 3 3 C C 0 SEQCRD A Y TYR TYR 4 4 C C 0 SEQCRD A F PHE PHE 5 5 C C 0 SEQCRD A A ALA ALA 6 6 C C 0 SEQCRD A G GLY GLY 7 7 C C 0 SEQCRD A V VAL VAL 8 8 H H 0 SEQCRD A K LYS LYS 9 9 H H 0 SEQCRD A K LYS LYS 10 10 H H 0 SEQCRD A L LEU LEU 11 11 H H 0 SEQCRD A T THR THR 12 12 H H 0 SEQCRD A K LYS LYS 13 13 H H 0 SEQCRD A A ALA ALA 14 14 H H 0 SEQCRD A I ILE ILE 15 15 H H 0 SEQCRD A L LEU LEU 16 16 H H 0 SEQCRD A A ALA ALA 17 17 H H 0 SEQCRD A V VAL VAL 18 18 H H 0 SEQCRD A R ARG ARG 19 19 H H 0 SEQCRD A A ALA ALA 20 20 C C 0 SEQCRD A X NH2 NH2 21 21 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA