Chains and heterogens:
PDB Chain Sequences:
>1vpkA (A:) mgsdkihhhhhhmkvtvttlelkdkitiaskalakksvkpilagflfevkdgnfyicatd letgvkatvnaaeisgearfvvpgdviqkmvkvlpdeitelslegdalvissgstvfrit tmpadefpeitpaesgitfevdtslleemvekvifaaakdefmrnlngvfwelhknllrl vasdgfrlalaeeqieneeeasfllslksmkevqnvldntteptitvrydgrrvslstnd vetvmrvvdaefpdykrvipetfktkvvvsrkelreslkrvmviaskgsesvkfeieenv mrlvskspdygevvdevevqkegedlviafnpkfiedvlkhieteeiemnfvdstspcqi npldisgylyivmpirla
>1vpkA (A:) hmkvtvttlelkdkitiaskalakksvkpilagflfevkdgnfyicatdletgvkatvna aeisgearfvvpgdviqkmvkvlpdeitelslegdalvissgstvfrittmpadefpeit paesgitfevdtslleemvekvifaaakdefmrnlngvfwelhknllrlvasdgfrlala eeqieneeeasfllslksmkevqnvldntteptitvrydgrrvslstndvetvmrvvdae fpdykrvipetfktkvvvsrkelreslkrvmviaskgsesvkfeieenvmrlvskspdyg evvdevevqkegedlviafnpkfiedvlkhieteeiemnfvdstspcqinpldisgylyi vmpirla