Chains and heterogens:
PDB Chain Sequences:
>1qazA (A:) gshpfdqavvkdptasyvdvkarrtflqsgqlddrlkaalpkeydctteatpnpqqgemv iprrylsgnhgpvnpdyepvvtlyrdfekisatlgnlyvatgkpvyatcllnmldkwaka dallnydpksqswyqvewsaataafalstmmaepnvdtaqrervvkwlnrvarhqtsfpg gdtsccnnhsywrgqeatiigviskddelfrwglgryvqamglinedgsfvhemtrheqs lhyqnyamlpltmiaetasrqgidlyaykengrdihsarkfvfaavknpdlikkyasepq dtrafkpgrgdlnwieyqrarfgfadelgfmtvpifdprtggsatllaykp