Two new electrophoretic variants of human triosephosphate isomerase ( TPI) have been partially purified and characterized. The TPI Manchester variant, a cathodally migrating electrophoretic allozyme identified in an individual with the phenotype TPI 1-Manchester, is associated with a normal level of
Characterization of a series of electrophoretic and enzyme activity variants of human glucose-phosphate isomerase
β Scribed by H. W. Mohrenweiser; P. T. Wade; K. H. Wurzinger
- Publisher
- Springer
- Year
- 1987
- Tongue
- English
- Weight
- 490 KB
- Volume
- 75
- Category
- Article
- ISSN
- 0340-6717
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β¦ Synopsis
A total of 3438 cord blood samples were screened for variants of erythrocyte glucose-phosphate isomerase. The five different electrophoretic, three activity/deficiency, and one thermostability variants distributed among 27 unrelated Caucasian families of that population, plus two electrophoretic variants previously described from three Amerindian tribes were subsequently examined for cryptic variation using activity and thermostability criteria. Although thermostability differences were observed between electrophoretic variants, no microheterogeneity within any one class of variant was detected.
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We have made an experimental study of the isomerization of fructose and glucose by glucose isomerase in two forms: one soluble and the other immobilized by being fixed in a gel matrix. For the latter technique we used a fixed-bed differential reeirculation reactor, which allowed us to obtain compara