Chains and heterogens:
PDB Chain Sequences:
>2trm_ (-) ivggytcqensvpyqvslnsgyhfcggslindqwvvsaahcyksriqvrlgehninvleg neqfvnaakiikhpnfdrktlnnnimliklsspvklnarvatvalpsscapagtqclisg wgntlssgvnepdllqcldapllpqadceasypgkitdnmvcvgfleggkdscqgdsggp vvcngelqgivswgygcalpdnpgvytkvcnyvdwiqdtiaan