Chains and heterogens:
PDB Chain Sequences:
>1gk3A (A:) teltlkpgtltlaqlraihaapvrlqldasaapaidasvacveqiiaedrtaygintgfg llastriashdlenlqrslvlshaagigapldddlvrlimvlkinslsrgfsgirrkvid alialvnaevyphiplkgsvgasgalaplahmslvllgegkarykgqwlsatealavagl epltlaakeglallngtqastayalrglfyaedlyaaaiacgglsveavlgsrspfdari heargqrgqidtaacfrdllgdssevslshknadkvqdpyslrcqpqvmgacltqlrqaa evlgieanavsdnplvfaaegdvisggnfhaepvamaadnlalaiaeigslserrislmm dkhmsqlppflvenggvnsgfmiaqvtaaalasenkalshphsvdslptsanqedhvsma paagkrlwemaentrgvlaiewlgacqgldlrkglktsaklekarqalrsevahydrdrf fapdiekavellakgsltgllpagvlpsl