Record Information
Version2.0
Creation Date2012-05-31 13:59:19 -0600
Update Date2015-06-03 15:54:24 -0600
Secondary Accession Numbers
  • ECMDB03484
Identification
Name:O-Phosphohomoserine
DescriptionO-phosphohomoserine is a naturally occurring analogue of phosphonate amino acids. It is an intermediate in glycine, serine and threonine metabolism. It is comverted to L-threonine via threonine synthase (EC:4.2.3.1). (KEGG)
Structure
Thumb
Synonyms:
  • 2-Amino-4-hydroxy-Butyrate phosphate
  • 2-Amino-4-hydroxy-Butyric acid phosphate
  • 2-amino-4-Hydroxy-butyric acid phosphoric acid
  • Homoserine phosphate
  • Homoserine phosphoric acid
  • L-2-Amino-4-hydroxy-Butyrate dihydrogen phosphate (ester)
  • L-2-Amino-4-hydroxy-Butyric acid dihydrogen phosphate (ester)
  • L-2-amino-4-Hydroxy-butyric acid dihydrogen phosphoric acid (ester)
  • O-Phospho-homoserine
  • O-Phospho-L-homoserine
  • O-phosphohomoserine
  • O-Phosphoryl-homoserine
  • O-Phosphorylhomoserine
  • P-HomoSer
Chemical Formula:C4H10NO6P
Weight:Average: 199.0991
Monoisotopic: 199.024573569
InChI Key:FXDNYOANAXWZHG-VKHMYHEASA-N
InChI:InChI=1S/C4H10NO6P/c5-3(4(6)7)1-2-11-12(8,9)10/h3H,1-2,5H2,(H,6,7)(H2,8,9,10)/t3-/m0/s1
CAS number:4210-66-6
IUPAC Name:(2S)-2-amino-4-(phosphonooxy)butanoic acid
Traditional IUPAC Name:O-phosphohomoserine
SMILES:N[C@@H](CCOP(O)(O)=O)C(O)=O
Chemical Taxonomy
Description belongs to the class of organic compounds known as l-alpha-amino acids. These are alpha amino acids which have the L-configuration of the alpha-carbon atom.
KingdomOrganic compounds
Super ClassOrganic acids and derivatives
ClassCarboxylic acids and derivatives
Sub ClassAmino acids, peptides, and analogues
Direct ParentL-alpha-amino acids
Alternative Parents
Substituents
  • L-alpha-amino acid
  • Monoalkyl phosphate
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Alkyl phosphate
  • Fatty acid
  • Amino acid
  • Carboxylic acid
  • Monocarboxylic acid or derivatives
  • Amine
  • Hydrocarbon derivative
  • Primary amine
  • Organic oxide
  • Organooxygen compound
  • Organonitrogen compound
  • Organopnictogen compound
  • Organic oxygen compound
  • Primary aliphatic amine
  • Organic nitrogen compound
  • Carbonyl group
  • Aliphatic acyclic compound
Molecular FrameworkAliphatic acyclic compounds
External Descriptors
Physical Properties
State:Solid
Charge:-2
Melting point:Not Available
Experimental Properties:
PropertyValueSource
LogP:-3.82PhysProp
Predicted Properties
PropertyValueSource
Water Solubility18.1 g/LALOGPS
logP-2.3ALOGPS
logP-3.2ChemAxon
logS-1ALOGPS
pKa (Strongest Acidic)1.52ChemAxon
pKa (Strongest Basic)9.46ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area130.08 ŲChemAxon
Rotatable Bond Count5ChemAxon
Refractivity37.78 m³·mol⁻¹ChemAxon
Polarizability15.86 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
Reactions:
SMPDB Pathways:
Secondary Metabolites: threonine biosynthesis from aspartatePW000976 ThumbThumb?image type=greyscaleThumb?image type=simple
threonine biosynthesisPW000817 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:
Concentrations
Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-0002-9300000000-32eaea5dd0559c46626eView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-00dj-9740000000-c08eab2934811bd8ba17View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-2920000000-4ad8858fcdd6c7235181View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0pb9-9400000000-0f8e18482c6cb4d65640View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0a4i-9100000000-5e53d50c26289d23a51dView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-6900000000-7771f160a034ddf9f1b5View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004i-9100000000-8d6f322a6a23b8822896View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9000000000-a90f429c8931d6b68915View in MoNA
References
References:
  • Connick JH, Heywood GC, Smith DA, Stone TW: O-phosphohomoserine, a naturally occurring analogue of phosphonate amino acid antagonists, is an N-methyl-D-aspartate (NMDA) antagonist in rat hippocampus. Neurosci Lett. 1986 Jul 24;68(2):249-51. Pubmed: 3528930
  • Donini S, Percudani R, Credali A, Montanini B, Sartori A, Peracchi A: A threonine synthase homolog from a mammalian genome. Biochem Biophys Res Commun. 2006 Dec 1;350(4):922-8. Epub 2006 Sep 29. Pubmed: 17034760
  • Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114. Pubmed: 22080510
  • Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590. Pubmed: 21097882
  • Sun G, Yang K, Zhao Z, Guan S, Han X, Gross RW: Shotgun metabolomics approach for the analysis of negatively charged water-soluble cellular metabolites from mouse heart tissue. Anal Chem. 2007 Sep 1;79(17):6629-40. Epub 2007 Aug 1. Pubmed: 17665876
  • van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25. Pubmed: 17765195
  • Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948. Pubmed: 18331064
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI ID15961
HMDB IDHMDB03484
Pubchem Compound ID151187
Kegg IDC01102
ChemSpider ID133252
Wikipedia IDNot Available
BioCyc IDO-PHOSPHO-L-HOMOSERINE
EcoCyc IDO-PHOSPHO-L-HOMOSERINE

Enzymes

General function:
Involved in ATP binding
Specific function:
Catalyzes the ATP-dependent phosphorylation of L- homoserine to L-homoserine phosphate. Is also able to phosphorylate the hydroxy group on gamma-carbon of L-homoserine analogs when the functional group at the alpha-position is a carboxyl, an ester, or even a hydroxymethyl group. Neither L- threonine nor L-serine are substrates of the enzyme
Gene Name:
thrB
Uniprot ID:
P00547
Molecular weight:
33623
Reactions
ATP + L-homoserine = ADP + O-phospho-L-homoserine.
General function:
Involved in catalytic activity
Specific function:
Catalyzes the gamma-elimination of phosphate from L- phosphohomoserine and the beta-addition of water to produce L- threonine. To a lesser extent, is able to slowly catalyze the deamination of L-threonine into alpha-ketobutyrate and that of L- serine and 3-chloroalanine into pyruvate. Is also able to rapidly convert vinylglycine to threonine, which proves that the pyridoxal p-quinonoid of vinylglycine is an intermediate in the TS reaction
Gene Name:
thrC
Uniprot ID:
P00934
Molecular weight:
47113
Reactions
O-phospho-L-homoserine + H(2)O = L-threonine + phosphate.

Transporters

General function:
Involved in transporter activity
Specific function:
Part of the binding-protein-dependent transport system for phosphonates; probably responsible for the translocation of the substrate across the membrane
Gene Name:
phnE
Uniprot ID:
P16683
Molecular weight:
28383