Chains and heterogens:
PDB Chain Sequences:
>1bg9A (A:) qvlfqgfnweswkhnggwynflmgkvddiaaagithvwlppasqsvaeqgympgrlydld askygnkaqlksligalhgkgvkaiadivinhrtaehkdgrgiycifeggtpdarldwgp hmicrddrpyadgtgnpdtgadfgaapdidhlnlrvqkelvewlnwlkadigfdgwrfdf akgysadvakiyidrsepsfavaeiwtslayggdgkpnlnqdqhrqelvnwvdkvggkgp attfdfttkgilnvavegelwrlrgtdgkapgmigwwpakavtfvdnhdtgstqhmwpfp sdrvmqgyayilthpgtpcifydhffdwglkeeidrlvsvrtrhgihnesklqiieadad lylaeidgkvivklgprydvgnlipggfkvaahgndyavweki