Chains and heterogens:
PDB Chain Sequences:
>1a6rA (A:) mhhhhhhasenlafqgamassidiskinswnkefqsdlthqlattvlknynaddallnkt rlqkqdnrvfntvvstdstpvtnqkssgrawlfaatnqlrlnvlselnlkefelsqaylf fydklekanyfldqivssadqdidsrlvqyllaaptedggqysmflnlvkkyglipkdly gdlpysttasrkwnsllttklrefaetlrtalkersaddsiivtlreqmqreifrlmslf mdippvqpneqftweyvdkdkkihtikstplefaskyakldpstpvslindprhpygkli kidrlgnvlggdaviylnvdnetlsklvvkrlqnnkavffgshtpkfmdkktgvmdielw nypaigynlpqqkasriryheslmthamlitgchvdetsklplryrvenswgkdsgkdgl yvmtqkyfeeycfqivvdinelpkelaskftsgkeepivlpiwdpmgalak
>1a6rA (A:) afqgamassidiskinswnkefqsdlthqlattvlknynaddallnktrlqkqdnrvfnt vvstdstpvtnqkssgrawlfaatnqlrlnvlselnlkefelsqaylffydklekanyfl dqivssadqdidsrlvqyllaaptedggqysmflnlvkkyglipkdlygdlpysttasrk wnsllttklrefaetlrtalkersaddsiivtlreqmqreifrlmslfmdippvqpneqf tweyvdkdkkihtikstplefaskyakldpstpvslindprhpygklikidrlgnvlggd aviylnvdnetlsklvvkrlqnnkavffgshtpkfmdkktgvmdielwnypaigynlpqq kasriryheslmthamlitgchvdetsklplryrvenswgkdsgkdglyvmtqkyfeeyc fqivvdinelpkelaskftsgkeepivlpiwdpmgalak