title: Regulation of peptide bond cis/trans isomerization by enzyme catalysis and its implication in physiological processes.
abstract: In some cases, the slow rotational movement underlying peptide bond cis/trans isomerizations is found to control the biological activity of proteins. Peptide bond cis/trans isomerases as cyclophilins, Fk506-binding proteins, parvulins, and bacterial hsp70 generally assist in the interconversion of the polypeptide substrate cis/trans isomers, and rate acceleration is the dominating mechanism of action in cells. We present evidence disputing the hypothesis that some of the molecular properties of these proteins play an auxiliary role in enzyme function.
authors.affiliation: Max Planck Research Unit for Enzymology of Protein Folding, Weinbergweg 22, 06120 Halle, Germany. fischer@enzyme-halle.mpg.de
authors.forename: G
authors.initials: G
authors.lastname: Fischer
authors.forename: T
authors.initials: T
authors.lastname: Aumüller
mesh_terms: D002384:Catalysis; D004798:Enzymes / Q000378:metabolism*; D007536:Isomerism; D010455:Peptides / Q000737:chemistry / Q000378:metabolism*
chemical_list: D004798:Enzymes; D010455:Peptides