Chains and heterogens:
PDB Chain Sequences:
>1i6bA (A:) aprksvrwctispaeaakcakfqrnmkkvrgpsvscirktssfeciqaiaankadavtld gglvyeaglhpyklrpvaaevyqtrgkpqtryyavavvkkgsgfqlnqlqgvkschtglg rsagwnipigtlrpylnwtgppeplqkavanffsascvpcadgkqypnlcrlcagteadk cacssqepyfgysgafkclengagdvafvkdstvfenlpdeaerdkyellcpdntrkpvd afkechlarvpshavvarsvdgredliwkllhraqeefgrnkssafqlfgstpgeqdllf kdsalgfvripsqidsglylganyltatqnlretaaevaarrervvwcavgpeeerkckq wsdvsnrkvacasastteecialvlkgeadalnldggfiyvagkcglvpvlaenqksqns napdcvhrppegylavavvrksdadltwnslsgkkschtgvgrtaawnipmgllfnqtgs ckfdkffsqscapgadpqsslcalcvgnnenenkcmpnseeryygytgafrclaekagdv afvkdvtvlqntdgknsepwakdlkqedfellcldgtrkpvaeaeschlarapnhavvsq sdraqhlkkvlflqqdqfggngpdcpgkfclfksetknllfndnteclaelqgkttyeqy lgseyvtsitnlrrcsssplleacaflra