Chains and heterogens:
PDB Chain Sequences:
>4x85A (A:) randapivllhgftgwgreemfgfkywggvrgdieqwlndngyrtytlavgplssnwdra ceayaqlvggtvdygaahaakygharfgrtypgllpelkrggrihiiahsqggqtarmlv sllengsqeereyakahnvslsplfegghhfvlsvttiatphdgttlvnmvdftdrffdl qkavlkaaavasnvpytsqvydfkldqwglrrqpgesfdqyferlkrspvwtstdtaryd lsvpgaeklnqwvkaspntyylsfttertyrgaltgnyypelgmnafsavvcapflgsyr natlgiddrwlendgivnafsmngpkrgstdrivpydgtikkgvwndmgtynvdhlevig vdpnplfdiwafylrlaeqlaslqphhhhhh