Literature summary for 4.1.1.31 extracted from

Andreo, C.S.; Gonzalez, D.H.; Iglesias, A.A.
Higher plant phosphoenolpyruvate carboxylase (1987), FEBS Lett., 213, 1-8.

No PubMed abstract available

Search for more literature for 4.1.1.31

Activating Compound

Activating Compound	Comment	Organism	Structure
glucose 6-phosphate	C4 plants and CAM plants	Embryophyta

Inhibitors

Inhibitors	Comment	Organism	Structure
Asp	-	Embryophyta
Asp	-	Escherichia coli
diethyl dicarbonate	causes dissociation of the enzyme into dimers and monomers	Embryophyta
malate	L-malate	Embryophyta
malate	-	Escherichia coli
PCMB	causes dissociation of the enzyme into dimers and monomers	Embryophyta

Metals/Ions

Metals/Ions	Comment	Organism	Structure
Co2+	divalent cation required, Mn2+, Co2+ and Mg2+. Co2+ is less effective than Mg2+ or Mn2+	Embryophyta
Mg2+	-	Escherichia coli
Mg2+	divalent cation required, Mn2+, Co2+ and Mg2+	Embryophyta

Natural Substrates/ Products (Substrates)

Natural Substrates	Organism	Comment (Nat. Sub.)	Natural Products	Comment (Nat. Pro.)	Rev.	Reac.
Phosphoenolpyruvate + CO2	Embryophyta	in C4 plants the enzyme catalyzes the first step of the C4 dicarboxylic acid pathway. In CAM plants the enzyme functions in CO2 fixation	?	-	?

Organism

Organism	UniProt	Comment	Textmining
Crassula argentea	-	-	-
Embryophyta	-	-	-
Escherichia coli	-	-	-
[Brevibacterium] flavum	-	-	-

Reaction

Reaction	Comment	Organism	Reaction ID
phosphate + oxaloacetate = phosphoenolpyruvate + HCO3-	rapid equilibrium random bi bi mechanism with a dead end complex enzyme-bicarbonate	[Brevibacterium] flavum	a

Source Tissue

Source Tissue	Comment	Organism	Textmining
leaf	in C4 plants, located in the mesophyll cells	Embryophyta	-

Substrates and Products (Substrate)

Substrates	Comment Substrates	Organism	Products	Comment (Products)	Rev.	Reac.
phosphoenolpyruvate + CO2	-	Escherichia coli	phosphate + oxaloacetate	-	?
phosphoenolpyruvate + CO2	-	[Brevibacterium] flavum	phosphate + oxaloacetate	-	?
phosphoenolpyruvate + CO2	-	Embryophyta	phosphate + oxaloacetate	-	?
phosphoenolpyruvate + CO2	-	Crassula argentea	phosphate + oxaloacetate	-	?
Phosphoenolpyruvate + CO2	in C4 plants the enzyme catalyzes the first step of the C4 dicarboxylic acid pathway. In CAM plants the enzyme functions in CO2 fixation	Embryophyta	?	-	?

Subunits

Subunits	Comment	Organism
dimer	the enzyme exists as tetramer during the night and as a dimer during the day	Crassula argentea
tetramer	-	Escherichia coli
tetramer	the enzyme exists as tetramer during the night and as a dimer during the day	Crassula argentea

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Release 2023.1 (January 2023)