Chains and heterogens:
PDB Chain Sequences:
>1gcb_ (-) sssidiskinswnkefqsdlthqlattvlknynaddallnktrlqkqdnrvfntvvstds tpvtnqkssgrcwlfaatnqlrlnvlselnlkefelsqaylffydklekanyfldqivss adqdidsrlvqyllaaptedggqysmflnlvkkyglipkdlygdlpysttasrkwnsllt tklrefaetlrtalkersaddsiivtlreqmqreifrlmslfmdippvqpneqftweyvd kdkkihtikstplefaskyakldpstpvslindprhpygklikidrlgnvlggdaviyln vdnetlsklvvkrlqnnkavffgshtpkfmdkktgvmdielwnypaigynlpqqkasrir yheslmthamlitgchvdetsklplryrvenswgkdsgkdglyvmtqkyfeeycfqivvd inelpkelaskftsgkeepivlpiwdpmgala