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FASTA Sequence PDB Format mmCIF Format
FASTA Sequence PDB Format PDB Format(gz) PDBx/mmCIF Format PDBx/mmCIF Format(gz) PDBML/XML Format Validation Full PDF Validation CIF

1qsi

Magnesium(ii)-and zinc(ii)-protoporphyrin ix's stabilize the lowest oxygen affinity state of human hemoglobin even more strongly than deoxyheme