Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 26, Issue 12, Pages 740-746Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/S0968-0004(01)01981-8
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The cupin superfamily of proteins is among the most functionally diverse of any described to date. It was named on the basis of the conserved P-barrel fold ('cupa' is the Latin term for a small barrel), and comprises both enzymatic and non-enzymatic members, which have either one or two cupin domains. Within the conserved tertiary structure, the variety of biochemical function is provided by minor variation of the residues in the active site and the identity of the bound metal ion. This review discusses the advantages of this particular scaffold and provides an evolutionary analysis of 18 different subclasses within the cupin superfamily.
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