Chains and heterogens:
PDB Chain Sequences:
>1and_ (-) ivggytcqensvpyqvslnsgyhfcggslindqwvvsaahcyksriqvrlgehninvleg neqfvnaakiikhpnfdhktlnndimliklsspvklnarvatvalpsscapagtqclisg wgntlssgvnepdllqcldapllpqadceasypgkitdnmvcvgfleggkdscqgdsggp vvcngelqgivswgygcalpdnpgvytkvcnyvdwiqdtiaan