Titlebook: Isoenzymes; J. Henry Wilkinson Book 1970Latest edition J. Henry Wilkinson 1970 biochemistry.biology.enzyme.enzymes

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Techniques for the Separation of Isoenzymes,more convenient. Before discussing the various procedures which can be employed, brief consideration will be given to some of the factors to be taken into account in the preparation of enzyme solutions.

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The Chemical Nature of Isoenzymes,mounts of neuraminic (sialic) acid, and hence differ in their electric charges and electrophoretic mobilities. The polymorphism of certain cholinesterases seems to be due to polymerization, while conformational differences and association with different carrier proteins have been suggested to account for other groups of isoenzymes.

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,Enzyme Multiplicity in the Glycolytic Pathway and the Pentose—Phosphate Cycle,cle are of great importance in the study of hereditary anaemias, both from the diagnostic and genetic points of view. The principal enzymes concerned are shown in the diagram of both pathways illustrated in Fig. 18.

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The Biological Significance of Isoenzymes, to a brief summary of some of the more important findings concerning the possible physiological functions of the heteropolymeric isoenzymes, particularly lactate dehydrogenase, the significance of genetically determined enzymes and finally the role of isoenzymes in metabolic regulation.

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Introduction,ctrophoresis (Vesell and Bearn, 1957; Wieland and Pfleiderer, 1957; Sayre and Hill, 1957) led to a spectacular development of interest in the occurrence of enzymes in multiple molecular forms. However, the rather isolated, but nevertheless quite numerous, earlier reports that many different enzymes

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Techniques for the Separation of Isoenzymes,arily upon the nature and extent of the resultant charge on the protein fractions in the buffer solution used. For analytical purposes several micro-electrophoretic techniques can be used, but when it is required to separate isoenzymes on a preparative scale chromatographic methods may sometimes be