Chains and heterogens:
PDB Chain Sequences:
>1anc_ (-) ivggytcqensvpyqvslnsgyhfcggslindqwvvsaahcyksriqvrlgehninvleg neqfvnaakiikhpnfdrktlnndimliklsspvklnarvatvalpsscapagtqclisg wgntlssgvnepdllqcldapllpqadceasypgkitdnmvcvgfleggkdscqgdsggp vvcngelqgivkwgygcalpdnpgvytkvcnyvdwiqdtiaan