Chains and heterogens:
PDB Chain Sequences:
>1rz7H (H:) evqlvqsgaevkkpgatvkisckasgytfsdfymywvrqapgkglewmglidpedadtmy aekfrgrvtitadtstdtgylelsslrsedtavyycaadpwelnafnvwgqgtlvsvssa stkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssg lyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvep
>1rz7L (L:) diqmtqspssvsasvgdrvtitcrasqdistwlawyqqkpgkapklliyaastlqsgvps rfsgsgsgtdfsltinslqpedfatyycqqansfftfgggtkveikrtvaapsvfifpps deqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstltl skadyekhklyacevthqglsspvtksfnrge
>1rz7L (L:) iqmtqspssvsasvgdrvtitcrasqdistwlawyqqkpgkapklliyaastlqsgvpsr fsgsgsgtdfsltinslqpedfatyycqqansfftfgggtkveikrtvaapsvfifppsd eqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstltls kadyekhklyacevthqglsspvtksfnrge