Chains and heterogens:
PDB Chain Sequences:
>1fgsA (A:) mnytetvayihsfprlaktgdhrriltllhalgnpqqqgryihvtgtngkgsaanaiahv leasgltvglytspfimrfnerimidhepipdaalvnavafvraalerlqqqqadfnvte fefitalaywyfrqrqvdvavievgiggdtdstnvitpvvsvltevaldhqkllghtita iakhkagiikrgipvvtgnlvpdaaavvaakvattgsqwlrfdrdfsvpkaklhgwgqrf tyedqdgrisdlevplvgdyqqrnmaiaiqtakvyakqtewpltpqnirqglaashwpar lekisdtplividgahnpdginglitalkqlfsqpitviagiladkdyaamadrltaafs tvylvpvpgtpralpeagyealhegrlkdswqealaaslndvpdqpivitgslylasavr qtllggks
>1fgsA (A:) mnytetvayihsfprlagdhrriltllhalgnpqqqgryihvtgtngkgsaanaiahvle asgltvglytspfimrfnerimidhepipdaalvnavafvraalerlqqqqadfnvtefe fitalaywyfrqrqvdvavievgdstnvitpvvsvltevaldtitaiakhkagiikrgip vvtgnlvpdaaavvaakvattgsqwlrfdrdfsvpkaklhgwgqrftyedqdgrisdlev plvgdyqqrnmaiaiqtakvyakqtewpltpqnirqglaashwparlekisdtplividg ahnpdginglitalkqlfsqpitviagyaamadrltaafstvylvpvpgtprgrlkdswq ealaaslndvpdqpivitgslylasavrqtllg