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Literature summary for 2.7.7.27 extracted from

  • Crevillen, P.; Ventriglia, T.; Pinto, F.; Orea, A.; Merida, A.; Romero, J.M.
    Differential pattern of expression and sugar regulation of Arabidopsis thaliana ADP-glucose pyrophosphorylase-encoding genes (2005), J. Biol. Chem., 280, 8143-8149.
    View publication on PubMed
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Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
ATP + alpha-D-glucose 1-phosphate Arabidopsis thaliana different large subunit isoforms allow the enzyme to be efficiently regulated according to the metabolic situation and the starch necessities of a tissue. In source tissues, ADP-glucose diphosphorylase would be finely regulated by the 3-phosphoglycerate/phosphate ratio, whereas in sink tissues, the enzyme would be dependent on the availability of substrates for starch synthesis diphosphate + ADP-glucose
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Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
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Source Tissue

Source Tissue Comment Organism Textmining
leaf ApL1, ApL2 and ApL3 transcripts are localized in the mesophyll and vasular companion cells Arabidopsis thaliana
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Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + alpha-D-glucose 1-phosphate
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 Arabidopsis thaliana diphosphate + ADP-glucose
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 ?
ATP + alpha-D-glucose 1-phosphate different large subunit isoforms allow the enzyme to be efficiently regulated according to the metabolic situation and the starch necessities of a tissue. In source tissues, ADP-glucose diphosphorylase would be finely regulated by the 3-phosphoglycerate/phosphate ratio, whereas in sink tissues, the enzyme would be dependent on the availability of substrates for starch synthesis Arabidopsis thaliana diphosphate + ADP-glucose
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 ?

Subunits

Subunits Comment Organism
More six Arabidopsis thaliana ADP-glucose pyrophosphorylase-encoding genes (two small subunits, ApS1 and ApS2, and four large subunits, ApL1–ApL4) studied. Based on mRNA expression, ApS1 is the main small subunit or catalytic isoform responsible for ADP-glucose diphosphorylase activity in all tissues of the plant. Large subunits play a regulatory role. ApL1 is the main large subunit in source tissues, whereas ApL3 and, to a lesser extent, ApL4 are the main isoforms present in sink tissues Arabidopsis thaliana

Synonyms

Synonyms Comment Organism
ADP-glucose pyrophosphorylase
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 Arabidopsis thaliana