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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2020-09-15 18:18:14 UTC
HMDB IDHMDB0001319
Secondary Accession Numbers
  • HMDB01319
Metabolite Identification
Common NamePyridoxine 5'-phosphate
DescriptionPyridoxine 5'-phosphate, also known as pyridoxine-5P or pyridoxine phosphoric acid, belongs to the class of organic compounds known as pyridoxine-5'-phosphates. These are pyridoxines that carry a phosphate group at the 5-position. Pyridoxine 5'-phosphate is a very strong basic compound (based on its pKa). Pyridoxine 5'-phosphate exists in all living species, ranging from bacteria to humans. Within humans, pyridoxine 5'-phosphate participates in a number of enzymatic reactions. In particular, pyridoxine 5'-phosphate can be biosynthesized from pyridoxine through its interaction with the enzyme pyridoxal kinase. In addition, pyridoxine 5'-phosphate can be converted into pyridoxal 5'-phosphate through its interaction with the enzyme pyridoxine-5'-phosphate oxidase. In humans, pyridoxine 5'-phosphate is involved in vitamin B6 metabolism. Outside of the human body, Pyridoxine 5'-phosphate has been detected, but not quantified in, several different foods, such as welsh onions, sweet marjorams, mango, kales, and oil-seed camellia. This could make pyridoxine 5'-phosphate a potential biomarker for the consumption of these foods.
Structure
Thumb
Synonyms
Chemical FormulaC8H12NO6P
Average Molecular Weight249.1577
Monoisotopic Molecular Weight249.040223633
IUPAC Name{[5-hydroxy-4-(hydroxymethyl)-6-methylpyridin-3-yl]methoxy}phosphonic acid
Traditional Namepyridoxine-5'-phosphate
CAS Registry Number447-05-2
SMILES
CC1=NC=C(COP(O)(O)=O)C(CO)=C1O
InChI Identifier
InChI=1S/C8H12NO6P/c1-5-8(11)7(3-10)6(2-9-5)4-15-16(12,13)14/h2,10-11H,3-4H2,1H3,(H2,12,13,14)
InChI KeyWHOMFKWHIQZTHY-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pyridoxine-5'-phosphates. These are pyridoxines that carry a phosphate group at the 5-position.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassPyridoxines
Direct ParentPyridoxine-5'-phosphates
Alternative Parents
Substituents
  • Pyridoxine-5'-phosphate
  • Monoalkyl phosphate
  • Hydroxypyridine
  • Methylpyridine
  • Organic phosphoric acid derivative
  • Alkyl phosphate
  • Phosphoric acid ester
  • Heteroaromatic compound
  • Azacycle
  • Hydrocarbon derivative
  • Alcohol
  • Aromatic alcohol
  • Organic nitrogen compound
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Biological locationSource
Process
RoleNot Available
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M+H]+Not Available150.628http://allccs.zhulab.cn/database/detail?ID=AllCCS00000469
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
Not Available
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified0.003 (0.0-0.01) uMAdult (>18 years old)FemaleObesity details
Associated Disorders and Diseases
Disease References
Obesity
  1. Driskell JA, Chrisley BM, Reynolds LK, Moak SW: Plasma B6 vitamer and plasma and urinary 4-pyridoxic acid concentrations of middle-aged obese black women. J Chromatogr. 1991 Aug 23;568(2):333-40. [PubMed:1783639 ]
Associated OMIM IDs
DrugBank IDDB02209
Phenol Explorer Compound IDNot Available
FooDB IDFDB031140
KNApSAcK IDC00007505
Chemspider ID1026
KEGG Compound IDC00627
BioCyc IDPYRIDOXINE-5P
BiGG ID35527
Wikipedia LinkNot Available
METLIN ID6156
PubChem Compound1055
PDB IDNot Available
ChEBI ID28803
Food Biomarker OntologyNot Available
VMH IDPDX5P
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceArgoudelis, Chris J. Preparation of crystalline pyridoxine 5'-phosphate and some of its properties. Journal of Agricultural and Food Chemistry (1986), 34(6), 995-8.
Material Safety Data Sheet (MSDS)Not Available
General ReferencesNot Available

Enzymes

General function:
Involved in pyridoxamine-phosphate oxidase activity
Specific function:
Catalyzes the oxidation of either pyridoxine 5'-phosphate (PNP) or pyridoxamine 5'-phosphate (PMP) into pyridoxal 5'-phosphate (PLP).
Gene Name:
PNPO
Uniprot ID:
Q9NVS9
Molecular weight:
29987.79
Reactions
Pyridoxine 5'-phosphate + Oxygen → Pyridoxal 5'-phosphate + Hydrogen peroxidedetails
General function:
Involved in pyridoxal kinase activity
Specific function:
Required for synthesis of pyridoxal-5-phosphate from vitamin B6.
Gene Name:
PDXK
Uniprot ID:
O00764
Molecular weight:
35102.105
Reactions
Adenosine triphosphate + Pyridoxine → ADP + Pyridoxine 5'-phosphatedetails
General function:
Involved in catalytic activity
Specific function:
Protein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP.
Gene Name:
PDXP
Uniprot ID:
Q96GD0
Molecular weight:
31697.735
Reactions
Pyridoxine + Phosphate → Pyridoxine 5'-phosphate + Waterdetails
General function:
Involved in phosphatase activity
Specific function:
Phosphatase that has high activity toward pyridoxal 5'-phosphate (PLP). Also active at much lower level toward pyrophosphate, phosphoethanolamine (PEA), phosphocholine (PCho), phospho-l-tyrosine, fructose-6-phosphate, p-nitrophenyl phosphate, and h-glycerophosphate.
Gene Name:
PHOSPHO2
Uniprot ID:
Q8TCD6
Molecular weight:
27768.72
Reactions
Pyridoxine + Phosphate → Pyridoxine 5'-phosphate + Waterdetails