Chains and heterogens:
PDB Chain Sequences:
>1qsfA (A:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqadgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrw
>1qsfB (B:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm
>1qsfD (D:) keveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrf taqlnkasqyvsllirdsqpsdsatylcavttdswgklqfgagtqvvvtpdiqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdsdvyitdktvldmrsmdfksnsavawsnksd facanafnnsiipedtffps
>1qsfE (E:) gvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgevpn gynvsrsttedfplrllsaapsqtsvyfcasrpglaggrpeqyfgpgtrltvtedlknvf ppevavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvstdpqplkeqp alndsryalssrlrvsatfwqnprnhfrcqvqfyglsendewaqdrakpvtqivsaeawg rad