Abstract
In leaves of maize (Zea mays) the activity of pyrophosphate:fructose 6-phosphate 1-phosphotransferase (PFP) is much less than that of ATP:fructose 6-phosphate 1-phosphotransferase. A sequential extraction technique was used to study the location of PFP in this tissue. When compared with enzymes known to be restricted to specific locations in maize, the distribution of PFP activity in the sequential extracts indicated that PFP is located predominantly, if not exclusively, in the mesophyll cytoplasm. Although confined to the same site as sucrose synthesis, the level of PFP activity is inadequate to contribute significantly to the gluconeogenic flux from fructose 1,6-bisphosphate to fructose 6-phosphate. The absence of PFP activity from the bundle-sheath demonstrates that this activity is not essential for glycolysis in higher plants.
Full text
PDF




Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Arnon D. I. COPPER ENZYMES IN ISOLATED CHLOROPLASTS. POLYPHENOLOXIDASE IN BETA VULGARIS. Plant Physiol. 1949 Jan;24(1):1–15. doi: 10.1104/pp.24.1.1. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Baer G. R., Schrader L. E. Relationships between CO(2) Exchange Rates and Activities of Pyruvate,Pi Dikinase and Ribulose Bisphosphate Carboxylase, Chlorophyll Concentration, and Cell Volume in Maize Leaves. Plant Physiol. 1985 Mar;77(3):612–616. doi: 10.1104/pp.77.3.612. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Carnal N. W., Black C. C. Phosphofructokinase activities in photosynthetic organisms : the occurrence of pyrophosphate-dependent 6-phosphofructokinase in plants and algae. Plant Physiol. 1983 Jan;71(1):150–155. doi: 10.1104/pp.71.1.150. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hatch M. D., Mau S. L. Association of NADP- and NAD-linked malic enzyme acitivities in Zea mays: relation to C4 pathway photosynthesis. Arch Biochem Biophys. 1977 Mar;179(2):361–369. doi: 10.1016/0003-9861(77)90123-0. [DOI] [PubMed] [Google Scholar]
- Huang A. H., Beevers H. Microbody enzymes and carboxylases in sequential extracts from c(4) and c(3) leaves. Plant Physiol. 1972 Aug;50(2):242–248. doi: 10.1104/pp.50.2.242. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Johnson H. S., Hatch M. D. Properties and regulation of leaf nicotinamide-adenine dinucleotide phosphate-malate dehydrogenase and 'malic' enzyme in plants with the C4-dicarboxylic acid pathway of photosynthesis. Biochem J. 1970 Sep;119(2):273–280. doi: 10.1042/bj1190273. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kanai R., Edwards G. E. Separation of mesophyll protoplasts and bundle sheath cells from maize leaves for photosynthetic studies. Plant Physiol. 1973 Jun;51(6):1133–1137. doi: 10.1104/pp.51.6.1133. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kombrink E., Kruger N. J., Beevers H. Kinetic properties of pyrophosphate:fructose-6-phosphate phosphotransferase from germinating castor bean endosperm. Plant Physiol. 1984 Feb;74(2):395–401. doi: 10.1104/pp.74.2.395. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Kruger N. J., Beevers H. Synthesis and degradation of fructose 2,6-bisphosphate in endosperm of castor bean seedlings. Plant Physiol. 1985 Feb;77(2):358–364. doi: 10.1104/pp.77.2.358. [DOI] [PMC free article] [PubMed] [Google Scholar]
- LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
- Leigh R. A., Rees T., Fuller W. A., Banfield J. The location of acid invertase activity and sucrose in the vacuoles of storage roots of beetroot (Beta vulgaris). Biochem J. 1979 Mar 15;178(3):539–547. doi: 10.1042/bj1780539. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lorimer G. H., Badger M. R., Andrews T. J. D-Ribulose-1,5-bisphosphate carboxylase-oxygenase. Improved methods for the activation and assay of catalytic activities. Anal Biochem. 1977 Mar;78(1):66–75. doi: 10.1016/0003-2697(77)90009-4. [DOI] [PubMed] [Google Scholar]
- Schmitt M. R., Edwards G. E. Glycerate kinase from leaves of C3 plants. Arch Biochem Biophys. 1983 Jul 1;224(1):332–341. doi: 10.1016/0003-9861(83)90217-5. [DOI] [PubMed] [Google Scholar]
- Soll J., Wötzel C., Buchanan B. B. Enzyme regulation in c(4) photosynthesis : identification and localization of activities catalyzing the synthesis and hydrolysis of fructose-2,6-bisphosphate in corn leaves. Plant Physiol. 1985 Apr;77(4):999–1003. doi: 10.1104/pp.77.4.999. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Usuda H., Edwards G. E. Localization of glycerate kinase and some enzymes for sucrose synthesis in c(3) and c(4) plants. Plant Physiol. 1980 May;65(5):1017–1022. doi: 10.1104/pp.65.5.1017. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Van Schaftingen E., Lederer B., Bartrons R., Hers H. G. A kinetic study of pyrophosphate: fructose-6-phosphate phosphotransferase from potato tubers. Application to a microassay of fructose 2,6-bisphosphate. Eur J Biochem. 1982 Dec;129(1):191–195. doi: 10.1111/j.1432-1033.1982.tb07039.x. [DOI] [PubMed] [Google Scholar]
- Wong K. F., Davies D. D. Regulation of phosphoenolpyruvate carboxylase of Zea mays by metabolites. Biochem J. 1973 Mar;131(3):451–458. doi: 10.1042/bj1310451. [DOI] [PMC free article] [PubMed] [Google Scholar]
- ap Rees T., Green J. H., Wilson P. M. Pyrophosphate:fructose 6-phosphate 1-phosphotransferase and glycolysis in non-photosynthetic tissues of higher plants. Biochem J. 1985 Apr 1;227(1):299–304. doi: 10.1042/bj2270299. [DOI] [PMC free article] [PubMed] [Google Scholar]
