Name the different parts to the hemoglobin molecule below: (a) CH$_3$ CH=CH$_2$ \text{HC} \text{=C-CH=CH$_2$} CH$_3$-C \text{N-Fe-N} CH$_3$ CH$_2$ COOH HC\text{=C-CH=CH$_2$} CH$_2$ CH$_3$ CH$_2$ COOH (b) Know how a hemoglobin is recycled: Label each part of the picture below.
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Step 1: The different parts of the hemoglobin molecule are: - Heme group - Globin chains Show more…
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Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe) atom. By itself, heme is not a good oxygen carrier: it must be part of a larger protein to prevent oxidation of the iron. The heme prosthetic group is entirely buried within myoglobin. Each iron atom can form six coordination bonds. Two of these bonds are formed between iron and oxygen. Each hemoglobin or myoglobin molecule can bind four oxygen molecules. Hemoglobin is a heterotetramer, whereas myoglobin is a monomer. Molecular oxygen binds reversibly to the Fe(II) atom in heme.
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Select all statements that correctly describe hemoglobin and myoglobin structure. The heme prosthetic group is entirely buried within myoglobin. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind one oxygen molecule. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe) atom. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron. Hemoglobin and myoglobin are heterotetramers. Each iron atom can form six coordination bonds. Two of these bonds are formed between iron and oxygen. Molecular oxygen binds reversibly to the Fe(II) atom in heme.
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Describe the structure and formation of the hemoglobin molecule
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