Chains and heterogens:
PDB Chain Sequences:
>6fz9A (A:) srandapivllhgftgwgreemfgfkywggvrgdieqwlndngyrtytlavgplssnwdr aceayaqlvggtvdygaahaakhgharfgrtypgllpelkrggrihiiahsqggqtarml vsllengsqeereyakahnvslsplfegghhfvlsvttiatphdgttlvnmvdftdrffd lqkfvlkaaavasnvpytsqvydfkldqwglrrqpgesfdqyferlkrspvwtstdtary dlsvpgaeklnqwvkaspntyylsfatertyrgaltgnyypelgmnafsavvcapflgsy rnatlgiddrwlendgivnafsmngpkrgstdrivpydgtikkgvwndmgtynvdhfevi gvdpnplfdirafylrlaeqlaslqphhhhhh