Enzymes

Enzyme Catalysts - http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Enzymes.html Enzymes are catalysts. Most are proteins. (A few ribonucleoprotein  enzymes have been discovered and, for some of these, the catalytic activity is in the RNA part rather than the protein part. Link to discussion of these ribozymes.) Enzymes bind temporarily to one or more of the reactants of the reaction they catalyze. In doing so, they lower the amount of activation energy needed and thus speed up the reaction. - [Read more]

Enzyme Information - http://www.enzymestuff.com/faq.htm  Enzymes Competitive inhibition Enzyme cofactors  Lysozyme: a model of enzyme action Factors Affecting Enzyme Action Regulation of Enzyme Activity Anchoring enzymes in membranes  Inactive precursors  Feedback Inhibition  Precursor Activation Regulation of Enzyme Synthesis - [Read more]

Enzyme nomenclature database - http://us.expasy.org/enzyme/ Enzyme nomenclature database. ENZYME is a repository of information relative to the nomenclature of enzymes. It is primarily based on the recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology (IUBMB) and it describes each type of characterized enzyme for which an EC (Enzyme Commission) number has been provided. - [Read more]

Enzymes Function and Structure - http://www.rsc.org/education/teachers/learnnet/cfb/enzymes.htm Enzymes Function and Structure. Enzymes are very efficient catalysts for biochemical reactions. They speed up reactions by providing an alternative reaction pathway of lower activation energy. Reaction profiles: uncatalysed and enzyme-catalysed Like all catalysts, enzymes take part in the reaction - that is how they provide an alternative reaction pathway. But they do not undergo permanent changes and so remain unchanged at the end of the reaction. - [Read more]