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Molecular Structures
Molecular model of the struture of heme. Heme is a small, flat molecule with an iron ion (dark red) at its center. Heme is an essential component of hemoglobin, the protein in blood that carries oxygen throughout our bodies. This image first appeared in the September 2013 issue of Findings Magazine [PDF]. View side view of heme here 3540.
Rachel Kramer Green, RCSB Protein Data Bank
Illustration
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