Chains and heterogens:
PDB Chain Sequences:
>3bxvA (A:) mpkpyiainmadlknepktfemfsavgpkvcmvtarhpgfvgfqnhvqigvlpfgerfgg akmdmtkesstvrvlqytmwkdwkdheemhrqnwsylfrlcyscasqmvwgpwepiyeik yadmpintemtdftavvgkkfaegkpleipvisqpygkrvvafgehtvipgkeeqfedai iktlemfkrapgflgamllkeigvsgigsfqfgskgfhqllespgslepdpnnvmyqape akptppqyivhvewanldalqfgmgrvllspeyrevhdealdtliygpyiriinpvmegt fwreylne