Information on EC 6.3.2.36 - 4-phosphopantoate-beta-alanine ligase

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The enzyme appears in viruses and cellular organisms

EC NUMBER
COMMENTARY hide
6.3.2.36
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RECOMMENDED NAME
GeneOntology No.
4-phosphopantoate-beta-alanine ligase
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REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
ATP + (R)-4-phosphopantoate + beta-alanine = AMP + diphosphate + (R)-4'-phosphopantothenate
show the reaction diagram
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PATHWAY
BRENDA Link
KEGG Link
MetaCyc Link
beta-Alanine metabolism
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Metabolic pathways
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Pantothenate and CoA biosynthesis
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phosphopantothenate biosynthesis III (archaebacteria)
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pantothenate biosynthesis
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SYSTEMATIC NAME
IUBMB Comments
(R)-4-phosphopantoate:beta-alanine ligase (AMP-forming)
The conversion of (R)-pantoate to (R)-4'-phosphopantothenate is part of the pathway leading to biosynthesis of 4'-phosphopantetheine, an essential cofactor of coenzyme A and acyl-carrier protein. In bacteria and eukaryotes this conversion is performed by condensation with beta-alanine, followed by phosphorylation (EC 6.3.2.1 [pantoate---beta-alanine ligase] and EC 2.7.1.33 [pantothenate kinase], respectively). In archaea the order of these two steps is reversed, and phosphorylation precedes condensation with beta-alanine. The two archaeal enzymes that catalyse this conversion are EC 2.7.1.169, pantoate kinase, and this enzyme.
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
malfunction
the deletion mutant strain grows well in media supplemented with 1 mM CoA. The deletion mutant strain can not grow at all in the absence of CoA
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
ATP + (R)-4-phosphopantoate + beta-alanine
AMP + diphosphate + (R)-4'-phosphopantothenate
show the reaction diagram
ATP + 4-phosphopantoate + beta-alanine
AMP + diphosphate + 4'-phosphopantothenate
show the reaction diagram
NATURAL SUBSTRATES
NATURAL PRODUCTS
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
ATP + (R)-4-phosphopantoate + beta-alanine
AMP + diphosphate + (R)-4'-phosphopantothenate
show the reaction diagram
ATP + 4-phosphopantoate + beta-alanine
AMP + diphosphate + 4'-phosphopantothenate
show the reaction diagram
Q5JIZ8
the pantoate kinase/phosphopantothenate synthetase system represents the pathway for 4'-phosphopantothenate biosynthesis in Thermococcus kodakaraensis. The enzymes are necessary for CoA biosynthesis in this organism
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COFACTOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
acetyl-CoA
activates enzyme activity 1.64fold
CoA
activates enzyme activity 3.12fold
malonyl-CoA
activates enzyme activity 1.36fold
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
PDB
SCOP
CATH
ORGANISM
UNIPROT
Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
Thermococcus kodakarensis (strain ATCC BAA-918 / JCM 12380 / KOD1)
MOLECULAR WEIGHT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
29843
2 * 29843, calculated from sequence
SUBUNITS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
dimer
2 * 29843, calculated from sequence
Purification/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
recombinant His-tagged enzyme from Escherichia coli strain BL21-CodonPlus(DE3) by nickel affinity chromatography, dialysis and ultrafiltration
Cloned/COMMENTARY
ORGANISM
UNIPROT
LITERATURE
expression in Escherichia coli
recombinant expression of His-tagged enzyme in Escherichia coli strain BL21-CodonPlus(DE3)-RIPL, introduced with pSC101-based plasmid encoding argU, ileY, and leuW tRNA genes, subcloning in Escherichia coli strain JM109