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. 1971 Jul;68(7):1402–1406. doi: 10.1073/pnas.68.7.1402

Turnover of Genetically Defined Catalase Isozymes in Maize

Peter H Quail 1,*, John G Scandalios 1,†
PMCID: PMC389204  PMID: 5283927

Abstract

The turnover of two homotetramers of catalase, V4 and Z4, specified by genes at two separate loci, has been studied during germination of maize seed by the techniques of density labeling and starch-gel electrophoresis. Both isozymes were shown to be turning over during this time. However, Z4 accumulates because the rate of synthesis exceeds the rate of degradation, whereas V4 slowly disappears because the rate of degradation exceeds the rate of synthesis. Evidence is also presented that the rate of synthesis of Z4 exceeds that of V4, which suggests that this may be a major factor in the differential expression of the two catalase genes.

Keywords: density labeling, synthesis, degradation, starch-gel electrophoresis

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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