Record Information
Version2.0
Creation Date2015-09-08 17:50:06 -0600
Update Date2016-09-13 16:35:44 -0600
Secondary Accession Numbers
  • ECMDB24213
Identification
Name:4'-phosphopantetheine
Description4'-phosphopantetheine is a metabolite in the pantothenate and coenzyme A biosynthesis pathway. It can be generated from pantatheine (via pantothenate kinase 1) or R-4'-phospho-pantothenoyl-L-cysteine (via phosphopantothenoylcysteine decarboxylase) or dephospho-CoA (via 4'-phosphopantetheine adenylyl-transferase and ectonucleotide pyrophosphatase). The conversion of 4'-phosphopantetheine (4'-PP) to dephospho-CoA, is catalyzed by 4'-phosphopantetheine adenylyl-transferase. It has been identified as an essential cofactor in in the biosynthesis of fatty acids, polyketides, depsipeptides, peptides, and compounds derived from both carboxylic and amino acid precursors. In particular it is a key prosthetic group of acyl carrier protein (ACP) and peptidyl carrier proteins (PCP) and aryl carrier proteins (ArCP) derived from Coenzyme A. Phosphopantetheine fulfils two demands. Firstly, the intermediates remain covalently linked to the synthases (or synthetases) in an energy-rich thiol ester linkage. Secondly, the flexibility and length of phosphopantetheine chain (approximately 2 nm) allows the covalently tethered intermediates to have access to spatially distinct enzyme active sites.
Structure
Thumb
Synonyms:Not Available
Chemical Formula:
Weight:Average: Not Available
Monoisotopic: Not Available
InChI Key:Not Available
InChI:Not Available
CAS number:Not Available
IUPAC Name:2,3,3-trimethyl-4-(phosphonatooxy)-N-{2-[(2-sulfanylethyl)carbamoyl]ethyl}butanamide
Traditional IUPAC Name:2,3,3-trimethyl-4-(phosphonatooxy)-N-{2-[(2-sulfanylethyl)carbamoyl]ethyl}butanamide
SMILES:Not Available
Chemical Taxonomy
Description belongs to the class of organic compounds known as monoalkyl phosphates. These are organic compounds containing a phosphate group that is linked to exactly one alkyl chain.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassOrganic phosphoric acids and derivatives
Sub ClassPhosphate esters
Direct ParentMonoalkyl phosphates
Alternative Parents
Substituents
  • Monoalkyl phosphate
  • Carboximidic acid derivative
  • Carboximidic acid
  • Alkylthiol
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Organosulfur compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic anion
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External DescriptorsNot Available
Physical Properties
State:Not Available
Charge:-2
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility0.57 g/LALOGPS
logP0.9ALOGPS
logP-0.4ChemAxon
logS-2.8ALOGPS
pKa (Strongest Acidic)1.86ChemAxon
pKa (Strongest Basic)-0.91ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area130.62 ŲChemAxon
Rotatable Bond Count10ChemAxon
Refractivity82.57 m³·mol⁻¹ChemAxon
Polarizability34.96 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
Reactions:
SMPDB Pathways:
Citrate lyase activationPW002075 ThumbThumb?image type=greyscaleThumb?image type=simple
Pantothenate and CoA biosynthesisPW000828 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
  • Pantothenate and CoA biosynthesis ec00770
EcoCyc Pathways:Not Available
Concentrations
Not Available
Spectra
Spectra:Not Available
References
References:Not Available
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI IDNot Available
HMDB IDNot Available
Pubchem Compound IDNot Available
Kegg IDNot Available
ChemSpider IDNot Available
Wikipedia IDPhosphopantetheine
BioCyc IDNot Available

Enzymes

General function:
Involved in catalytic activity
Specific function:
Reversibly transfers an adenylyl group from ATP to 4'- phosphopantetheine, yielding dephospho-CoA (dPCoA) and pyrophosphate
Gene Name:
coaD
Uniprot ID:
P0A6I6
Molecular weight:
17837
Reactions
ATP + pantetheine 4'-phosphate = diphosphate + 3'-dephospho-CoA.
General function:
Involved in phosphopantothenate--cysteine ligase activity
Specific function:
Catalyzes two steps in the biosynthesis of coenzyme A. In the first step cysteine is conjugated to 4'-phosphopantothenate to form 4-phosphopantothenoylcysteine, in the latter compound is decarboxylated to form 4'-phosphopantotheine
Gene Name:
coaBC
Uniprot ID:
P0ABQ0
Molecular weight:
43438
Reactions
N-((R)-4'-phosphopantothenoyl)-L-cysteine = pantotheine 4'-phosphate + CO(2).
CTP + (R)-4'-phosphopantothenate + L-cysteine = CMP + diphosphate + N-((R)-4'-phosphopantothenoyl)-L-cysteine.