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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Heme binding to albuminoid proteins is the result of recent evolution.

We hypothesize that the structure of the heme binding site of paralogous albuminoids alpha-fetoprotein and serum albumin has evolved from the ancestor vitamin D binding protein through the 'phylogenetic intermediate' afamin, the most recently discovered albuminoid. Heme binding to plasma proteins should serve not only as a buffer for heme homeostasis, avoiding heme binding to lipoproteins with the consequent oxidative stress, but also for heme transfer to the liver, complementing the function of hemopexin.[1]


  1. Heme binding to albuminoid proteins is the result of recent evolution. Fasano, M., Fanali, G., Leboffe, L., Ascenzi, P. IUBMB. Life (2007) [Pubmed]
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