>3ttzB (B:) observed residues (from ATOM records) qvlegleavrkrpgmyigstserglhhlvweivdnsidealagyanqievviekdnwikv tdngrgipvdiqgrpaveviltssvvnalsqdlevyvhrnetiyhqaykkgvpqfdlkev gttdktgtvirfkadgeiftettvynyetlqqrirelaflnkgiqitlrderdeenvred syhye