Enzymes, simple nomenclature

In calculations on enzyme-catalyzed reactions, one of the ways a reaction equation can be entered is in the form atp+h2o+de=adp+pi. Note that hydrogen ions are never shown in a reaction equation at specified pH. Other programs may require that the reaction equation be written in the form ec3x6xlx3=adp+pi-(atp+h2o), where the name of the reaction is the EC (Enzyme Nomenclature) number with decimal points replaced by x s. It is especially simple to change the ranges of independent variables in tables and figures. 

Flavoenzymes constitute about 2% of all biological catalysts and are classified in several ways. One classification is based on EC number (enzyme nomenclature) and refers to the type of reaction catalyzed. More sophisticated classifications concern the inclusion of sequence, fold, and function. Historically, a distinction is made between simple and complex flavoenzymes (4). The latter proteins contain besides flavin other cofactors like heme, tetrahydrobiopterin, and metal ions. 

These fatty acid derivatives may be considered as complex lipids since they are formed of one fatty acid, a 3 -phospho-AMP linked to phosphorylated pantothenic acid (Vitamin F) and cysteamine. However, to simplify the nomenclature and taking into account their metabolism, we classify them within the big group of the fatty acids and their simple derivatives rather than within the complex and phosphorylated lipids. Long-chain acyl-CoA esters are substrates for a number of important enzymatic reactions and play a central role in the regulation of metabolism as allosteric regulators of several enzymes. 

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