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Abstract Detail


Photosynthesis(Carbon)

Anderson, Louise E. [1], Fadowole, Deborah [1], Reyes, Bessie A. [1], Carol, Andrew A. [1].

Distribution of Thioredoxins f and m Relative to Six Target Enzymes in Pea Leaf Chloroplasts.

Immunocytolocalization experiments indicate that fructose bisphosphatase (EC 3.1.3.11), sedoheptulose bisphosphatase (EC 3.1.3.37), phosphoribulokinase (EC 2.7.1.19), the NADP-linked glyceraldehyde-3-P dehydrogenase (EC 1.2.1.13), the NADP-dependent malate dehydrogenase (EC 1.1.1.82), and ADP-glucose pyrophosphorylase (EC 2.7.7.27) are distributed non-randomly with respect to thioredoxin m in pea leaf thin sections. Four of these enzymes, fructose bisphosphatase, phosphoribulokinase, the NADP-dependent malate dehydrogenase, and ADP-glucose pyrophosphorylase, are distributed non-randomly with respect to thioredoxin f. These data, in combination with the results of binding experiments and activation assays reported by other laboratories, suggest that both thioredoxins may be involved in regulation of the activity of these light-activated chloroplast enzymes.


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1 - University of Illinois-Chicago, BioS, 845 West. Taylor, Chicago, IL, 60607, USA

Keywords:
co-localization
light-activation
nearest neighbor analysis
Pisum sativum
thioredoxin.

Presentation Type: Plant Biology Abstract
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P13003
Abstract ID:181


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