Chains and heterogens:
PDB Chain Sequences:
>1bgvA (A:) skyvdrviaevekkyadepefvqtveevlsslgpvvdahpeyeevallermvipervief rvpweddngkvhvntgyrvqfngaigpykgglrfapsvnlsimkflgfeqafkdslttlp mggakggsdfdpngksdrevmrfcqafmtelyrhigpdidvpagdlgvgareigymygqy rkivggfyngvltgkarsfggslvrpeatgygsvyyveavmkhendtlvgktvalagfgn vawgaakklaelgakavtlsgpdgyiydpegitteekinymlemrasgrnkvqdyadkfg vqffpgekpwgqkvdiimpcatqndvdleqakkivannvkyyievanmpttnealrflmq qpnmvvapskavnaggvlvsgfemsqnserlswtaeevdsklhqvmtdihdgsaaaaery glgynlvaganivgfqkiadammaqgiaw