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Differentiation of the Properties of the Branching Isozymes from Maize (Zea mays)
Open accessAbstract
The multiple forms of branching enzyme (BE) from developing maize (Zea mays) endosperm were purified by modification of previous procedures such that amylase activity could be eliminated completely from the BE preparation. Three distinct assays for BE activity (phosphorylase a stimulation assay, BE linkage assay, and iodine stain assay) were used to characterize and differentiate the properties of the BE isoforms. This study presents the first evidence that the BE isoforms differ in their action on amylopectin. BEI had the highest activity in branching amylose, but its rate of branching amylopectin was less than 5% of that of branching amylose. Conversely, BEII isoforms had lower rates in branching amylose (about 9-12% of that of BEI) and had higher rates of branching amylopectin (about 6-fold) than BEI. The implication of these findings to the mechanism of amylopectin synthesis in vivo are discussed.
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Cites
Measurement of protein using bicinchoninic acid
Smith, P. K., Krohn, R. I., Hermanson, G. T., Mallia, A. K., Gartner, F. H., Provenzano, M. D., Fujimoto, E. K., Goeke, N. M., Olson, B. J., & Klenk, D. C. (1985) · Analytical Biochemistry · doi:10.1016/0003-2697(85)90442-7 · Cited by 18,482
Cited by
Starch granules: structure and biosynthesis
Buléon, A., Colonna, P., Planchot, V., & Ball, S. (1998) · International Journal of Biological Macromolecules · doi:10.1016/s0141-8130(98)00040-3 · Cited by 2,091
THE SYNTHESIS OF THE STARCH GRANULE
Smith, A. M., Denyer, K., & Martin, C. (1997) · Annual Review of Plant Physiology and Plant Molecular Biology · doi:10.1146/annurev.arplant.48.1.67 · Cited by 486
Formation of starch in plant cells
Pfister, B., & Zeeman, S. C. (2016) · Cellular and Molecular Life Sciences · doi:10.1007/s00018-016-2250-x · Cited by 423
Starch Biosynthesis in the Developing Endosperms of Grasses and Cereals
Tetlow, I. J., & Emes, M. J. (2017) · Agronomy · doi:10.3390/agronomy7040081 · Cited by 112
Metadata
- Authors
- Guan, H. P., & Preiss, J.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1993-08-01
- Volume
- 102
- Issue
- 4
- Pages
- 1269-1273
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2133361436
- Cited by
- 256
- References
- 1
- FWCI
- 6.90
- Type
- journal article
- Language
- en
- Open access
- green
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- Guan, H. P., & Preiss, J. (1993). Differentiation of the Properties of the Branching Isozymes from Maize (Zea mays). Plant Physiology. https://doi.org/10.1104/pp.102.4.1269
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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