HEADSC 2ncu SEQCRD A K LYS LYS 1 1 C C 0 SEQCRD A Y TYR TYR 2 2 C C 0 SEQCRD A E GLU GLU 3 3 C C 0 SEQCRD A I ILE ILE 4 4 C C 0 SEQCRD A T THR THR 5 5 C C 0 SEQCRD A T THR THR 6 6 C C 0 SEQCRD A I ILE ILE 7 7 C C 0 SEQCRD A H HIS HIS 8 8 C C 0 SEQCRD A N ASN ASN 9 9 C C 0 SEQCRD A L LEU LEU 10 10 C C 0 SEQCRD A F PHE PHE 11 11 H H 0 SEQCRD A R ARG ARG 12 12 H H 0 SEQCRD A K LYS LYS 13 13 H H 0 SEQCRD A L LEU LEU 14 14 H H 0 SEQCRD A T THR THR 15 15 H H 0 SEQCRD A H HIS HIS 16 16 H H 0 SEQCRD A R ARG ARG 17 17 H H 0 SEQCRD A L LEU LEU 18 18 C C 0 SEQCRD A F PHE PHE 19 19 C C 0 SEQCRD A R ARG ARG 20 20 C C 0 SEQCRD A R ARG ARG 21 21 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA