Chains and heterogens:
PDB Chain Sequences:
>1rgzA (A:) pvsekqlaevvantvtplmkaqsvpgmavaviyqgkphyytfgkadiaankpvtpqtlfe lgsisktftgvlggdaiargeislddpvtrywpqltgkqwqgirmldlatytagglplqv pdevtdnasllrfyqnwqpqwkpgttrlyanasiglfgalavkpsgmpyeqamttrvlkp lkldhtwinvpkaeeahyawgyrdgkavravrvspgmldaqaygvktnvqdmanwvmanm apenvadaslkqgialaqsrywrigsmyqglgwemlnwpveantvvegsdskvalaplpv aevnppappvkaswvhktgstggfgsyvafipekqigivmlantsypnparveaayhile alq