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Literature summary for 2.4.1.13 extracted from

  • Li, J.; Baroja-Fernandez, E.; Bahaji, A.; Munoz, F.J.; Ovecka, M.; Montero, M.; Sesma, M.T.; Alonso-Casajus, N.; Almagro, G.; Sanchez-Lopez, A.M.; Hidalgo, M.; Zamarbide, M.; Pozueta-Romero, J.
    Enhancing sucrose synthase activity results in increased levels of starch and ADP-glucose in maize (Zea mays L.) seed endosperms (2013), Plant Cell Physiol., 54, 282-294.
    View publication on PubMed

Cloned(Commentary)

Cloned (Comment) Organism
gene SUS4, recombinant ectopic expression of the enzyme in Zea mays seed endosperm. Transgenic developing seeds exhibit a significant increase in SuSy activity, the transgenic seeds accumulate 10-15% more starch at the mature stage and contain a higher amylose/amylopectin balance than wild-type maize seeds, while no significant changes are detected in the transgenic seeds in the content of soluble sugars, and in activities of starch metabolism-related enzymes when compared with wild-type seeds, overview Solanum tuberosum

Protein Variants

Protein Variants Comment Organism
additional information recombinant ectopic expression of the enzyme from Solanum tuberosum in Zea mays seed endosperm leads to transgenic developing seeds that exhibit a significant increase in SuSy activity. The transgenic seeds accumulate 10-15% more starch at the mature stage and contain a higher amylose/amylopectin balance than wild-type maize seeds, while no significant changes are detected in the transgenic seeds in the content of soluble sugars, and in activities of starch metabolism-related enzymes when compared with wild-type seeds, phenotype, overview. Enhancement of the enzyme activity does not affect the redox status of AGP Zea mays

Localization

Localization Comment Organism GeneOntology No. Textmining
cytosol
-
Zea mays 5829
-
cytosol
-
Solanum tuberosum 5829
-

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ADP-glucose + D-fructose Zea mays
-
ADP + sucrose
-
r
ADP-glucose + D-fructose Solanum tuberosum
-
ADP + sucrose
-
r
NDP-glucose + D-fructose Zea mays
-
NDP + sucrose
-
r
NDP-glucose + D-fructose Solanum tuberosum
-
NDP + sucrose
-
r
UDP-glucose + D-fructose Zea mays
-
UDP + sucrose
-
r
UDP-glucose + D-fructose Solanum tuberosum
-
UDP + sucrose
-
r

Organism

Organism UniProt Comment Textmining
Solanum tuberosum Q7Y078 gene StSUS4
-
Zea mays
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
endosperm
-
Zea mays
-
seed
-
Zea mays
-
tuber
-
Solanum tuberosum
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ADP-glucose + D-fructose
-
Zea mays ADP + sucrose
-
r
ADP-glucose + D-fructose
-
Solanum tuberosum ADP + sucrose
-
r
NDP-glucose + D-fructose
-
Zea mays NDP + sucrose
-
r
NDP-glucose + D-fructose
-
Solanum tuberosum NDP + sucrose
-
r
UDP-glucose + D-fructose
-
Zea mays UDP + sucrose
-
r
UDP-glucose + D-fructose
-
Solanum tuberosum UDP + sucrose
-
r

Synonyms

Synonyms Comment Organism
StSUS4
-
Zea mays
StSUS4
-
Solanum tuberosum
SuSy
-
Zea mays
SuSy
-
Solanum tuberosum

General Information

General Information Comment Organism
physiological function enhancing sucrose synthase activity results in increased levels of starch and ADP-glucose in maize seed endosperms Zea mays
physiological function sucrose synthase is a major determinant of sink strength that highly controls the channeling of incoming sucrose into starch and cell wall polysaccharides, the enzyme is involved in production of starch and ADP-glucose Solanum tuberosum