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The Hemoglobin Molecule

Its 10,000 atoms are assembled into four chains, each a helix with several bends. The molecule has one shape when ferrying oxygen molecules and a slightly different shape when it is not

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Scientific American Magazine Vol 211 Issue 5This article was originally published with the title “The Hemoglobin Molecule” in Scientific American Magazine Vol. 211 No. 5 (), p. 64
doi:10.1038/scientificamerican1164-64