Chains and heterogens:
PDB Chain Sequences:
>1b7zA (A:) aprksvrwctispaeaakcakfqrnmkkvrgpsvscirktssfeciqaiaankadavtld gglvyeaglhpyklrpvaaevyqtrgkpqtryyavavvkkgsgfqlnqlqgvkschtglg rsagwnipigtlrpylnwtgppeplqkavanffsascvpcadgkqypnlcrlcagteadk cacssqepyfgysgafkclengagdvafvkdstvfenlpdeaerdkyellcpdntrkpvd afkechlarvpshavvarsvdgredliwkllhraqeefgrnkssafqlfgstpgeqdllf kdsalgfvripsqidsglylganyltatqnlretaaevaarrervvwcavgpeeerkckq wsdvsnrkvacasastteecialvlkgeadalnldggfiyvagkcglvpvlaenqksqns napdcvhrppegylavavvrksdadltwnslsgkkschtgvgrtaawnipmgllfnqtgs ckfdkffsqscapgadpqsslcalcvgnnenenkcmpnseeryygytgafrclaekagdv afvkdvtvlqntdgknsepwakdlkqedfellcldgtrkpvaeaeschlarapnhavvsq sdraqhlkkvlflqqdqfggngpdcpgkfclfksetknllfndnteclaelqgkttyeqy lgseyvtsitnlrrcsssplleacaflra