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. 1982 Nov;70(5):1359–1366. doi: 10.1104/pp.70.5.1359

Two-Dimensional Electrophoretic Mapping of Proteins of Bundle Sheath and Mesophyll Cells of the C4 Grass Digitaria sanguinalis (L.) Scop. (Crabgrass) 1

Philip A Harrison 1,2, Clanton C Black 1
PMCID: PMC1065888  PMID: 16662680

Abstract

Two-dimensional electrophoresis was performed on proteins of bundle sheath and mesophyll cells isolated from the C4 grass Digitaria sanguinalis (L.) Scop. Two-dimensional maps of these proteins were constructed and ribulose-1,5-biphosphate carboxylase and phosphoenolpyruvate carboxylase were identified. Of the total number of proteins found in both cell types, 36% were found only in bundle sheath cells, 17% only in mesophyll cells, and 47% in both cell types. By comparison, the distributions of 48 enzymes assayed in these cell types were 35%, 21%, and 44%, respectively.

Protein patterns were also compared with C4 plants exhibiting different decarboxylation pathways and, in both bundle sheath and mesophyll cells, proteins were found which were unique to each species. Bundle sheath proteins of one C4 species were found to be more like bundle sheath proteins of another C4 species than like mesophyll proteins of the same species.

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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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