HEADSC 1tck SEQCRD A R ARG ARG 1 1 T T 0 SEQCRD A D ASP ASP 2 2 T T 0 SEQCRD A C CYS CYS 3 3 T T 0 SEQCRD A C CYS CYS 4 4 T T 0 SEQCRD A T THR THR 5 5 T T 0 SEQCRD A X HYP HYP 6 6 T T 0 SEQCRD A X HYP HYP 7 7 T T 0 SEQCRD A K LYS LYS 8 8 T T 0 SEQCRD A K LYS LYS 9 9 C C 0 SEQCRD A C CYS CYS 10 10 C C 0 SEQCRD A K LYS LYS 11 11 C C 0 SEQCRD A D ASP ASP 12 12 H H 0 SEQCRD A A ALA ALA 13 13 H H 0 SEQCRD A Q GLN GLN 14 14 H H 0 SEQCRD A C CYS CYS 15 15 H H 0 SEQCRD A K LYS LYS 16 16 H H 0 SEQCRD A X HYP HYP 17 17 H H 0 SEQCRD A Q GLN GLN 18 18 C C 0 SEQCRD A R ARG ARG 19 19 C C 0 SEQCRD A C CYS CYS 20 20 C C 0 SEQCRD A C CYS CYS 21 21 C C 0 SEQCRD A A ALA ALA 22 22 C C 0 SEQCRD A X NH2 NH2 23 23 C C 0 PARAME method NMR PARAME resolution NA PARAME R-factor NA PARAME FreeR-factor NA