• David S. Goodsell, RCSB Protein Data Bank
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Haemoglobin. David S. Goodsell, RCSB Protein Data Bank. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.

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Molecular model from X-ray diffraction data (PDB ID: 2dhb) of haemoglobin. Haemoglobin is a protein found in red blood cells which binds to and carries oxygen and carbon dioxide. The protein consists of 4 subunits, each with an iron atom bound to a haem group. Width of image is approximately 6.5 nm.

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