PMID: 8595976Aug 1, 1995Paper

Glycine decarboxylase: protein chemistry and molecular biology of the major protein in leaf mitochondria

Journal of Bioenergetics and Biomembranes
D J Oliver, R Raman

Abstract

The four component proteins of the glycine decarboxylase multienzyme complex (the P-, H-, T-, and L-proteins) comprise over one-third of the soluble proteins in mitochondria isolated from the leaves of C3 plants. Together with serine hydroxymethyltransferase, glycine decarboxylase converts glycine to serine and is the site of photorespiratory CO2 and NH3 release. The component proteins of the complex are encoded on nuclear genes with N-terminal presequences that target them to the mitochondria. The isolated complex readily dissociates into its component proteins and reassociates into the intact complex in vitro. Because of the intimate association between photosynthesis and photorespiration, the proteins of the complex are present at higher levels in leaves in the light. The expression of these genes is controlled at the transcriptional level and the kinetics of expression are closely related to those of the small subunit of Rubisco. Deletion analysis of fusions between the promoter of the H-protein of the complex and the reporter gene beta-glucuronidase in transgenic tobacco has identified a region responsible for the tissue specificity and light dependence of gene expression. Gel shift experiments show that a nuclear protein ...Continue Reading

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Citations

Jun 1, 1997·Phytochemistry·E A Cossins, L Chen
Apr 5, 2001·Trends in Plant Science·R DouceF Rébeillé
Apr 12, 2001·Physiologia Plantarum·Natalia V. Bykova, Ian M. Møller
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Apr 21, 2020·The Plant Journal : for Cell and Molecular Biology·Maria WittmißHermann Bauwe
Jul 1, 2021·Molecular Biology and Evolution·Chi-Fa HuangWen-Hsiung Li

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