Heme

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Heme, or haem (pronounced /hi:m/ HEEM), is a precursor to hemoglobin. It is necessary to bind oxygen in the circulatory system. Heme is made in both the bone marrow and the liver.

Hemes can do many things, such as catalyse reactions or move chemicals. Hemes are usually bound to proteins, and make hemoproteins.

Examples of hemoproteins include hemoglobin, myoglobin, leghemoglobin, and cytochrome.

• Myoglobin
• Leghemoglobin
• Cytochrome

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