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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2021-09-07 16:45:30 UTC
HMDB IDHMDB0001491
Secondary Accession Numbers
  • HMDB01491
Metabolite Identification
Common NamePyridoxal 5'-phosphate
DescriptionPyridoxal phosphate, also known as PLP, pyridoxal 5'-phosphate or P5P, is the active form of vitamin B6. It is a coenzyme in a variety of enzymatic reactions. Pyridoxal 5'-phosphate belongs to the class of organic compounds known as pyridoxals and derivatives. Pyridoxals and derivatives are compounds containing a pyridoxal moiety, which consists of a pyridine ring substituted at positions 2,3,4, and 5 by a methyl group, a hydroxyl group, a carbaldehyde group, and a hydroxymethyl group, respectively. Pyridoxal 5'-phosphate is a drug which is used for nutritional supplementation and for treating dietary shortage or imbalance. Pyridoxal 5'-phosphate exists in all living species, ranging from bacteria to humans. In humans, pyridoxal 5'-phosphate is involved in glycine and serine metabolism. Outside of the human body, pyridoxal 5'-phosphate is found, on average, in the highest concentration within cow milk. Pyridoxal 5'-phosphate has also been detected, but not quantified in several different foods, such as soursops, italian sweet red peppers, muscadine grapes, european plums, and blackcurrants. Pyridoxal 5'-phosphate, with regard to humans, has been found to be associated with several diseases such as epilepsy, early-onset, vitamin B6-dependent, odontohypophosphatasia, pyridoxamine 5-prime-phosphate oxidase deficiency, and hypophosphatasia. Pyridoxal 5'-phosphate has also been linked to the inborn metabolic disorder celiac disease.
Structure
Thumb
Synonyms
Chemical FormulaC8H10NO6P
Average Molecular Weight247.1419
Monoisotopic Molecular Weight247.024573569
IUPAC Name[(4-formyl-5-hydroxy-6-methylpyridin-3-yl)methoxy]phosphonic acid
Traditional Namepyridoxal phosphate
CAS Registry Number54-47-7
SMILES
CC1=NC=C(COP(O)(O)=O)C(C=O)=C1O
InChI Identifier
InChI=1S/C8H10NO6P/c1-5-8(11)7(3-10)6(2-9-5)4-15-16(12,13)14/h2-3,11H,4H2,1H3,(H2,12,13,14)
InChI KeyNGVDGCNFYWLIFO-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as pyridoxals and derivatives. Pyridoxals and derivatives are compounds containing a pyridoxal moiety, which consists of a pyridine ring substituted at positions 2,3,4, and 5 by a methyl group, a hydroxyl group, a carbaldehyde group, and a hydroxymethyl group, respectively.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassPyridine carboxaldehydes
Direct ParentPyridoxals and derivatives
Alternative Parents
Substituents
  • Pyridoxal
  • Aryl-aldehyde
  • Monoalkyl phosphate
  • Hydroxypyridine
  • Methylpyridine
  • Organic phosphoric acid derivative
  • Phosphoric acid ester
  • Alkyl phosphate
  • Vinylogous acid
  • Heteroaromatic compound
  • Azacycle
  • Organopnictogen compound
  • Aldehyde
  • Organic oxygen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Ontology
Physiological effectNot Available
Disposition
Biological locationRoute of exposureSource
Process
Naturally occurring process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting Point255 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility28 mg/mLNot Available
LogPNot AvailableNot Available
Experimental Chromatographic Properties

Experimental Collision Cross Sections

Adduct TypeData SourceCCS Value (Å2)Reference
[M-H]-Baker150.53830932474
[M-H]-MetCCS_train_neg146.33630932474
[M+H]+Baker154.76130932474
[M+H]+MetCCS_train_pos151.40430932474
[M-H]-Not Available148.3http://allccs.zhulab.cn/database/detail?ID=AllCCS00000339
[M+H]+Not Available152.3http://allccs.zhulab.cn/database/detail?ID=AllCCS00000339
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Mitochondria
Biospecimen Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Urine
Tissue Locations
  • Erythrocyte
  • Kidney
  • Liver
  • Neuron
  • Skeletal Muscle
Pathways
Normal Concentrations
Abnormal Concentrations
Associated Disorders and Diseases
Disease References
Rheumatoid arthritis
  1. Chiang EP, Smith DE, Selhub J, Dallal G, Wang YC, Roubenoff R: Inflammation causes tissue-specific depletion of vitamin B6. Arthritis Res Ther. 2005;7(6):R1254-62. Epub 2005 Sep 13. [PubMed:16277678 ]
Hypophosphatasia
  1. Chodirker BN, Coburn SP, Seargeant LE, Whyte MP, Greenberg CR: Increased plasma pyridoxal-5'-phosphate levels before and after pyridoxine loading in carriers of perinatal/infantile hypophosphatasia. J Inherit Metab Dis. 1990;13(6):891-6. [PubMed:2079838 ]
Odontohypophosphatasia
  1. Haliloglu B, Guran T, Atay Z, Abali S, Mornet E, Bereket A, Turan S: Infantile loss of teeth: odontohypophosphatasia or childhood hypophosphatasia. Eur J Pediatr. 2013 Jun;172(6):851-3. doi: 10.1007/s00431-012-1868-4. Epub 2012 Oct 24. [PubMed:23093139 ]
Celiac disease
  1. Hallert C, Allenmark S, Larsson-Cohn U, Sedvall G: High level of pyridoxal 5'-phosphate in the cerebrospinal fluid of adult celiac patients. Am J Clin Nutr. 1982 Nov;36(5):851-4. [PubMed:6182788 ]
Pyridoxamine 5-prime-phosphate oxidase deficiency
  1. Ormazabal A, Oppenheim M, Serrano M, Garcia-Cazorla A, Campistol J, Ribes A, Ruiz A, Moreno J, Hyland K, Clayton P, Heales S, Artuch R: Pyridoxal 5'-phosphate values in cerebrospinal fluid: reference values and diagnosis of PNPO deficiency in paediatric patients. Mol Genet Metab. 2008 Jun;94(2):173-7. doi: 10.1016/j.ymgme.2008.01.004. Epub 2008 Feb 21. [PubMed:18294893 ]
Epilepsy, early-onset, vitamin B6-dependent
  1. Darin N, Reid E, Prunetti L, Samuelsson L, Husain RA, Wilson M, El Yacoubi B, Footitt E, Chong WK, Wilson LC, Prunty H, Pope S, Heales S, Lascelles K, Champion M, Wassmer E, Veggiotti P, de Crecy-Lagard V, Mills PB, Clayton PT: Mutations in PROSC Disrupt Cellular Pyridoxal Phosphate Homeostasis and Cause Vitamin-B6-Dependent Epilepsy. Am J Hum Genet. 2016 Dec 1;99(6):1325-1337. doi: 10.1016/j.ajhg.2016.10.011. [PubMed:27912044 ]
Associated OMIM IDs
  • 180300 (Rheumatoid arthritis)
  • 241500 (Hypophosphatasia)
  • 146300 (Odontohypophosphatasia)
  • 212750 (Celiac disease)
  • 610090 (Pyridoxamine 5-prime-phosphate oxidase deficiency)
  • 617290 (Epilepsy, early-onset, vitamin B6-dependent)
DrugBank IDDB00114
Phenol Explorer Compound IDNot Available
FooDB IDFDB021820
KNApSAcK IDC00007503
Chemspider ID1022
KEGG Compound IDC00018
BioCyc IDPYRIDOXAL_PHOSPHATE
BiGG ID33526
Wikipedia LinkPyridoxal_phosphate
METLIN ID6275
PubChem Compound1051
PDB IDNot Available
ChEBI ID18405
Food Biomarker OntologyNot Available
VMH IDPYDX5P
MarkerDB IDMDB00000331
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References

Only showing the first 10 proteins. There are 87 proteins in total.

Enzymes

General function:
Involved in 5-aminolevulinate synthase activity
Specific function:
Not Available
Gene Name:
ALAS2
Uniprot ID:
P22557
Molecular weight:
64632.86
General function:
Involved in 5-aminolevulinate synthase activity
Specific function:
Not Available
Gene Name:
ALAS1
Uniprot ID:
P13196
Molecular weight:
70580.325
General function:
Involved in glycine C-acetyltransferase activity
Specific function:
Not Available
Gene Name:
GCAT
Uniprot ID:
O75600
Molecular weight:
47973.79
General function:
Involved in methylenetetrahydrofolate reductase (NADPH) activity
Specific function:
Catalyzes the conversion of 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate, a co-substrate for homocysteine remethylation to methionine.
Gene Name:
MTHFR
Uniprot ID:
P42898
Molecular weight:
74595.895
General function:
Involved in 4-aminobutyrate transaminase activity
Specific function:
Catalyzes the conversion of gamma-aminobutyrate and L-beta-aminoisobutyrate to succinate semialdehyde and methylmalonate semialdehyde, respectively. Can also convert delta-aminovalerate and beta-alanine.
Gene Name:
ABAT
Uniprot ID:
P80404
Molecular weight:
56438.405
General function:
Involved in 1-aminocyclopropane-1-carboxylate synthase activity
Specific function:
Transaminase involved in tyrosine breakdown. Converts tyrosine to p-hydroxyphenylpyruvate. Can catalyze the reverse reaction, using glutamic acid, with 2-oxoglutarate as cosubstrate (in vitro). Has much lower affinity and transaminase activity towards phenylalanine.
Gene Name:
TAT
Uniprot ID:
P17735
Molecular weight:
50398.895
General function:
Involved in carboxy-lyase activity
Specific function:
Catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine, L-5-hydroxytryptophan to serotonin and L-tryptophan to tryptamine.
Gene Name:
DDC
Uniprot ID:
P20711
Molecular weight:
53893.755
General function:
Involved in transferase activity, transferring nitrogenous groups
Specific function:
Plays a key role in amino acid metabolism (By similarity).
Gene Name:
GOT1
Uniprot ID:
P17174
Molecular weight:
46247.14
General function:
Involved in transferase activity, transferring nitrogenous groups
Specific function:
Catalyzes the irreversible transamination of the L-tryptophan metabolite L-kynurenine to form kynurenic acid (KA). Plays a key role in amino acid metabolism. Important for metabolite exchange between mitochondria and cytosol. Facilitates cellular uptake of long-chain free fatty acids.
Gene Name:
GOT2
Uniprot ID:
P00505
Molecular weight:
47517.285
General function:
Involved in catalytic activity
Specific function:
Catalyzes the first reaction in the catabolism of the essential branched chain amino acids leucine, isoleucine, and valine.
Gene Name:
BCAT1
Uniprot ID:
P54687
Molecular weight:
38644.77

Only showing the first 10 proteins. There are 87 proteins in total.