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Literature summary for 2.4.1.11 extracted from

  • Plancke, C.; Colleoni, C.; Deschamps, P.; Dauvillee, D.; Nakamura, Y.; Haebel, S.; Ritte, G.; Steup, M.; Buleon, A.; Putaux, J.L.; Dupeyre, D.; dHulst, C.; Ral, J.P.; Loeffelhardt, W.; Ball, S.G.
    Pathway of cytosolic starch synthesis in the model glaucophyte Cyanophora paradoxa (2008), Eukaryot. Cell, 7, 247-257.
    View publication on PubMedView publication on EuropePMC

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
8
-
ADP-glucose pH 7.5, 35°C Cyanophora paradoxa
15
-
UDP-glucose pH 7.5, 35°C Cyanophora paradoxa

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
UDP-glucose + (1,4-alpha-D-glucosyl)n Cyanophora paradoxa Cyanophora paradoxa synthesizes amylose with a granule-bound starch synthase displaying a preference for UDP-glucose UDP + (1,4-alpha-D-glucosyl)n+1
-
?

Organism

Organism UniProt Comment Textmining
Cyanophora paradoxa A8V967
-
-
Cyanophora paradoxa A8V967 granule-bound starch synthase
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ADP-glucose + (1,4-alpha-D-glucosyl)n Cyanophora paradoxa synthesizes amylose with a granule-bound starch synthase displaying a preference for UDP-glucose Cyanophora paradoxa ADP + (1,4-alpha-D-glucosyl)n+1
-
?
ADP-glucose + glycogen
-
Cyanophora paradoxa ADP + ?
-
?
additional information enzyme is able to use both ADP-glucose and UDP-glucose but displays a sixfold higher Vmax with UDP-glucose Cyanophora paradoxa ?
-
?
UDP-glucose + (1,4-alpha-D-glucosyl)n Cyanophora paradoxa synthesizes amylose with a granule-bound starch synthase displaying a preference for UDP-glucose Cyanophora paradoxa UDP + (1,4-alpha-D-glucosyl)n+1
-
?
UDP-glucose + amylopectin enzyme polymerizes glucose residues to the outer chains of amylopectin. These chains subsequently are cleaved off amylopectin to generate mature amylose Cyanophora paradoxa UDP + amylose + ?
-
?
UDP-glucose + glycogen
-
Cyanophora paradoxa UDP + ?
-
?
UDP-glucose + maltotriose
-
Cyanophora paradoxa UDP + amylose
-
?

Synonyms

Synonyms Comment Organism
GBSS
-
Cyanophora paradoxa
granule-bound starch synthase
-
Cyanophora paradoxa