Phylogenetic divergence of fish and mammalian metallothionein: relationships with structural diversification and organismal temperature.

Abstract excerpt

Metallothioneins (MTs) are nonenzymatic low molecular weight proteins, that play an important role in the homeostasis and detoxification of heavy metals in a large variety of organisms. These proteins are endowed with striking features, including an unusual amino acid composition characterized by the presence of 20 cysteines out of a total of 60 residues and absence of secondary structure elements. It is...

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