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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Phosphoglycerate mutase, 2,3-bisphosphoglycerate phosphatase and enolase activity and isoenzymes in lung, colon and liver carcinomas.

We have compared the levels of phosphoglycerate mutase, 2,3-bisphosphoglycerate phosphatase and enolase activities and the distribution of their isoenzymes in normal colon, liver and lung tissues, and in colon, liver and lung adenocarcinoma, lung squamous cell carcinoma and lung carcinoid. All tumours presented higher phosphoglycerate mutase and enolase activities and lower 2,3-bisphosphoglycerate phosphatase activity than the normal tissues. No changes were observed in the phosphoglycerate mutase isoenzyme patterns analysed by cellulose acetate electrophoresis. All specimens contained mainly type BB isoenzyme, traces of type MB isoenzyme and no type MM isoenzyme. However, the tumours had decreased levels of 2,3-bisphosphoglycerate mutase and 2,3-bisphosphoglycerate mutase-phosphoglycerate mutase hybrid enzyme. Determined by agarose gel electrophoresis, alpha alpha-enolase was the isoenzyme predominant in normal lung, colon and liver tissue, although alpha gamma- and gamma gamma-enolase were also present in all tissues. In colon, liver and non-endocrine lung tumours, the proportions of alpha gamma- and gamma gamma-enolase decreased. In contrast, in carcinoid tumours of the lung, the proportions of these isoenzymes increased.[1]


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