Chains and heterogens:
PDB Chain Sequences:
>1k89_ (-) skyvdrviaevekkyadepefvqtveevlsslgpvvdahpeyeevallermvipervief rvpweddngkvhvntgyrvqfngaigpylgglrfapsvnlsimkflgfeqafkdslttlp mggakggsdfdpngksdrevmrfcqafmtelyrhigpdidvpagdlgvgarelgymygqy rkivggfyngvltgkarsfggslvrpeatgygsvyyveavmkhendtlvgktvalagfgn vawgaakklaelgakavtlsgpdgyiydpegitteekinymlemrasgrnkvqdyadkfg vqffpgekpwgqkvdiimpcatqndvdleqakkivannvkyyievanmpttnealrflmq qpnmvvapskavnaggvlvsgfemsqnserlswtaeevdsklhqvmtdihdgsaaaaery glgynlvaganivgfqkiadammaqgiaw