Chains and heterogens:
PDB Chain Sequences:
>1qrnA (A:) gshsmryfftsvsrpgrgeprfiavgyvddtqfvrfdsdaasqrmeprapwieqegpeyw dgetrkvkahsqthrvdlgtlrgyynqseagshtvqrmygcdvgsdwrflrgyhqyaydg kdyialkedlrswtaadmaaqttkhkweaahvaeqlraylegtcvewlrrylengketlq rtdapkthmthhavsdheatlrcwalsfypaeitltwqrdgedqtqdtelvetrpagdgt fqkwaavvvpsgqeqrytchvqheglpkpltlrw
>1qrnB (B:) miqrtpkiqvysrhpaengksnflncyvsgfhpsdievdllkngeriekvehsdlsfskd wsfyllyyteftptekdeyacrvnhvtlsqpkivkwdrdm
>1qrnD (D:) keveqnsgplsvpegaiaslnctysdrgsqsffwyrqysgkspelimsiysngdkedgrf taqlnkasqyvsllirdsqpsdsatylcavttdswgklqfgagtqvvvtpdiqnpdpavy qlrdskssdksvclftdfdsqtnvsqskdkdvyitdktvldmrsmdfksnsavawsnksd facanafnnsiipedtffps
>1qrnE (E:) gvtqtpkfqvlktgqsmtlqcaqdmnheymswyrqdpgmglrlihysvgagitdqgevpn gynvsrsttedfplrllsaapsqtsvyfcasrpglaggrpeqyfgpgtrltvtedlknvf ppevavfepsaeeishtqkatlvclatgfypdhvelswwvngkevhsgvstdpqplkeqp alndsryalssrlrvsatfwqnprnhfrcqvqfyglsendewtqdrakpvtqivsaeawg rad