Chains and heterogens:
PDB Chain Sequences:
>6s3vA (A:) srandapivllhgftgwgreemfgfkywggvrgdieqwlndngyrtytlavgplssnwdr aceayaqlvggtvdygaahaakhgharfgrtypgllpelkrggrihiiahsqggqtarml vsllengsqeereyakahnvslsplfegghhfvlsvttiatphdgttlvnmvdftdrffd lqkavlkaaavasnvpytsqvydfkldqwglrrqpgesfdqyferlkrspvwtstdtary dlsvpgacklnqwvkaspntyylsfatertyrgaltgnyypelgmnafsavvcapflgsy rnatlgiddrwlendgivnafsmngpkrcstdrivpydgtikkgvwndmgtynvdhlevi gvdpnplfdirafylrlaeqlaslqphhhhhh