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Enzymatic Activity and Protein Interactions in Alpha/Beta Hydrolase Fold Proteins: Moonlighting Versus Promiscuity

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Abstract:

Genes coding for members of the alpha/beta hydrolase fold superfamily of proteins are present in all known genomes. Although there is no common and essential function performed by these proteins shared in all living organisms, this fold has been used for a number of diverse functions. The ancestry of both enzymatic and protein-protein interaction capability of this structural scaffold made it an important tinkering tool kit for protein function evolution. Recently, enzymes known since a long time have been found to have a second function in acting promiscuously on alternative substrates, or to be true moonlighting proteins acting also as transporters, receptors, chaperones… The reverse situation has been encountered for adhesion proteins shown to be enzymes. This review, while not exhaustive, surveys some of the best-known examples of multiple functions in alpha/beta hydrolase fold proteins.





Keywords: Alpha/beta hydrolase fold; Genes; catalytic site; chaperones; cholinesterase; enzyme; partnership; receptors; structure-function relationship; transporters

Document Type: Research Article

Publication date: 2012-02-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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