Chains and heterogens:
PDB Chain Sequences:
>1bqbA (A:) aaatgtgkgvlgdtkdininsidggfsledlthqgklsaynfndqtgqatlitnedenfv kddqragvdanyyakqtydyykntfgresydnhgspivslthvnhyggqdnrnnaawigd kmiygdgdgrtftnlsgandvvaheithgvtqqtanleykdqsgalnesfsdvfgyfvdd edflmgedvytpgkegdalrsmsnpeqfgqpshmkdyvytekdnggvhtnsgipnkaayn viqaigkskseqiyyralteyltsnsnfkdlkdalyqaakdlyeqqtaeqvyeawnevgv e