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dc.contributor.author
Nakamura, Yasunori
dc.contributor.author
Steup, Martin
dc.contributor.author
Colleoni, Christophe
dc.contributor.author
Iglesias, Alberto Alvaro
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dc.contributor.author
Bao, Jinsong
dc.contributor.author
Fujita, Naoko
dc.contributor.author
Tetlow, Ian
dc.date.available
2023-09-28T14:36:36Z
dc.date.issued
2022-03
dc.identifier.citation
Nakamura, Yasunori; Steup, Martin; Colleoni, Christophe; Iglesias, Alberto Alvaro; Bao, Jinsong; et al.; Molecular regulation of starch metabolism; Springer; Plant molecular biology; 108; 4-5; 3-2022; 289-290
dc.identifier.issn
1573-5028
dc.identifier.uri
http://hdl.handle.net/11336/213449
dc.description.abstract
Starch is the second most abundant biomass next to cellulose and composed of amylopectin, a highly branched glucan, and amylose, an essentially linear glucan. The former and the latter glucans usually account for approximately 65–85% and 15–35% of the total starch, respectively. During the last three decades the basic scheme of starch biosynthesis has been established based on numerous biochemical, genetic, and molecular biological approaches worldwide using a variety of higher plants and algae. It is well known that after the synthesis of ADPglucose by ADPglucose pyrophosphorylase (AGPase), amylopectin’s fne structure is formed by concerted actions of multiple isozymes from three classes of enzymes, starch synthase (SS), starch branching enzyme (BE), and starch debranching enzyme (DBE), and that amylose is synthesized by mainly granule-bound SS (GBSS). In addition to the roles of starch biosynthetic isozymes, the contributions of α-glucan phosphorylase, α-glucan, water dikinase, phosphoglucan, water dikinase, pyruvate, phosphate dikinase, α-amylase, and carbohydrate-binding modules have been documented. Information on the whole genome sequence and omics analyses are available in main plant species. All these results revealed the roles of key biosynthetic isozymes of SS, GBSS, BE, and DBE and subunits of AGPase to starch biosynthesis, and presently we know to what extent the fne structure of starch molecules and the internal structure and physicochemical properties of starch granules as well as starch amounts can be modifed in accord with the activity levels of these isozymes and subunits. However, in spite of numerous past investigations, the regulation of the network of enzymatic reactions has not been fully understood. To resolve the complex mechanisms, we need to examine several topics such as redundancy and supplementary functions of multiple isozymes, enzymeenzyme interaction(s), and regulatory factors controlling catalytic and specific activities of individual isozymes, temporal and spatial co-expression of multiple isozymes, post-translational modifcation of enzymatic capacities such as phosphorylation, glycosylation, and redox state. There are still lots of uncertainties in the understanding of the initiation of starch biosynthesis.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Plant metabolism
dc.subject
Polysaccharides storage
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Enzymes
dc.subject
Molecular mechanisms
dc.subject.classification
Bioquímica y Biología Molecular
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Molecular regulation of starch metabolism
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-07T21:00:01Z
dc.journal.volume
108
dc.journal.number
4-5
dc.journal.pagination
289-290
dc.journal.pais
Países Bajos
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dc.description.fil
Fil: Nakamura, Yasunori. Akita Prefectural University; Japón
dc.description.fil
Fil: Steup, Martin. Universitat Potsdam; Alemania
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Fil: Colleoni, Christophe. Université de Lille; Francia
dc.description.fil
Fil: Iglesias, Alberto Alvaro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Agrobiotecnología del Litoral. Universidad Nacional del Litoral. Instituto de Agrobiotecnología del Litoral; Argentina
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Fil: Bao, Jinsong. Zhejiang University; China
dc.description.fil
Fil: Fujita, Naoko. University of Guelph; Canadá
dc.description.fil
Fil: Tetlow, Ian. University of Guelph; Canadá
dc.journal.title
Plant molecular biology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://doi.org/10.1007/s11103-022-01253-0
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s11103-022-01253-0
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