1998
DOI: 10.1104/pp.117.3.997
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Molecular and Biochemical Characterization of Cytosolic Phosphoglucomutase in Maize1

Abstract: Phosphoglucomutase (PGM) catalyzes the interconversion of glucose (Glc)-1-and Glc-6-phosphate in the synthesis and consumption of sucrose. We isolated two maize (Zea mays L.) cDNAs that encode PGM with 98.5% identity in their deduced amino acid sequence. Southern-blot analysis with genomic DNA from lines with different Pgm1 and Pgm2 genotypes suggested that the cDNAs encode the two known cytosolic PGM isozymes, PGM1 and PGM2. The cytosolic PGMs of maize are distinct from a plastidic PGM of spinach (Spinacia ol… Show more

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Cited by 71 publications
(47 citation statements)
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“…The plastidic PGM is essential for starch synthesis to store photosynthates in leaves during the day, and in the degradation of starch [44]. The cytosolic PGM is involved in sucrose catabolism to provide intermediates for glycolysis, citric acid cycle, fatty acid, amino acid, glyoxylic acid cycle etc metabolic pathways [45]. Therefore, PGM plays an important role in the distribution of Glc-6-P to glycolytic, starch, citric acid, amino acid, and fatty acid pathways [46] Malonyl-CoA is the point of bifurcation of stilbenoid from the fatty acid biosynthetic pathways [28].…”
Section: Resultsmentioning
confidence: 99%
“…The plastidic PGM is essential for starch synthesis to store photosynthates in leaves during the day, and in the degradation of starch [44]. The cytosolic PGM is involved in sucrose catabolism to provide intermediates for glycolysis, citric acid cycle, fatty acid, amino acid, glyoxylic acid cycle etc metabolic pathways [45]. Therefore, PGM plays an important role in the distribution of Glc-6-P to glycolytic, starch, citric acid, amino acid, and fatty acid pathways [46] Malonyl-CoA is the point of bifurcation of stilbenoid from the fatty acid biosynthetic pathways [28].…”
Section: Resultsmentioning
confidence: 99%
“…Cytosolic and plastidic PGI were quantified following Weeden and Gottlieb (1982). PGM was assayed as published by Manjunath et al (1998) and UGP as stated by Keurentjes et al (2008). Enzyme activities were expressed on a fresh weight basis (nmol g 21 FW min 21 ).…”
Section: Enzyme and Metabolite Assaysmentioning
confidence: 99%
“…cPGI and pPGI were assayed as described by Weeden and Gottlieb (1982). PGM was assayed as described by Manjunath et al (1998). SuSy and UGP were assayed as described (Keurentjes et al, 2008).…”
Section: Enzyme and Metabolite Assaysmentioning
confidence: 99%