Chains and heterogens:
PDB Chain Sequences:
>1budA (A:) fqrymeivivvdhsmvkkyngdsdsikawvyemintitesysylkidislsgleiwsgkd lidveasagntlksfgewrakdlihrishdnaqlltatdfdgatiglayvasmcnpkrsv gviqdhssvnrlvaitlahemahnlgvshdegscscggkscimspsisdetikyfsdcsy iqcrdyiskenppciln