Record Information
Version 1.0
Update Date 1/22/2018 12:54:54 PM
Metabolite IDPAMDB000306
Name: 5-Aminoimidazole ribonucleotide
Description:5-aminoimidazole ribonucleotide (AIR), is an intermediate of purine nucleotide biosynthesis, the precursor to 4-amino-2-methyl-5-hydroxymethylpyrimidine (HMP), the first product of the pyrimidine biosynthesis in a reaction mediated by the enzyme HMP-P kinase (ThiD). HMP is a precursor of thiamin phosphate (TMP), and subsequently to thiamin pyrophosphate (TPP), an essential cofactor in all living systems that plays a central role in metabolism. 5-Aminoimidazole ribonucleotide is a substrate for Scaffold attachment factor B2, Multifunctional protein ADE2, Serine/threonine-protein kinase Chk1, Vinexin, Trifunctional purine biosynthetic protein adenosine-3, Antileukoproteinase 1 and Scaffold attachment factor B.
  • 1-(5'-Phosphoribosyl)-5-aminoimidazole
  • 1-(5-Phospho-D-ribosyl)-5-aminoimidazole
  • 5'-Phosphoribosyl-5-aminoimidazole
  • 5-Amino-1-(5-phospho-D-ribosyl)imidazole
  • 5-Aminoimidazole ribonucleotide
  • 5-Aminoimidazole ribotide
  • AIR
  • Aminoimidazole ribotide
  • Phosphoribosylaminoimidazole
Chemical Formula: C8H14N3O7P
Average Molecular Weight: 295.1864
Monoisotopic Molecular Weight: 295.056936329
CAS number: 25635-88-5
IUPAC Name:{[(2R,3S,4R,5R)-5-(5-amino-1H-imidazol-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy}phosphonic acid
Traditional IUPAC Name: 5-aminoimidazole ribotide
Chemical Taxonomy
Taxonomy DescriptionThis compound belongs to the class of organic compounds known as 1-phosphoribosyl-imidazoles. These are organic compounds containing the imidazole ring linked to a ribose phosphate through a 1-2 bond.
Kingdom Organic compounds
Super ClassNucleosides, nucleotides, and analogues
Class Imidazole ribonucleosides and ribonucleotides
Sub Class1-phosphoribosyl-imidazoles
Direct Parent 1-phosphoribosyl-imidazoles
Alternative Parents
  • 1-phosphoribosyl-imidazole
  • N-glycosyl compound
  • Glycosyl compound
  • Monosaccharide phosphate
  • Monoalkyl phosphate
  • Alkyl phosphate
  • Primary aromatic amine
  • Phosphoric acid ester
  • Organic phosphoric acid derivative
  • Organic phosphate
  • N-substituted imidazole
  • Monosaccharide
  • Saccharide
  • Aminoimidazole
  • Heteroaromatic compound
  • Oxolane
  • Imidazole
  • Azole
  • Secondary alcohol
  • 1,2-diol
  • Oxacycle
  • Azacycle
  • Organoheterocyclic compound
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Amine
  • Alcohol
  • Aromatic heteromonocyclic compound
Molecular Framework Aromatic heteromonocyclic compounds
External Descriptors Not Available
Physical Properties
State: Solid
Melting point: Not Available
Experimental Properties:
Predicted Properties
Water Solubility3.38 mg/mLALOGPS
pKa (Strongest Acidic)1.22ChemAxon
pKa (Strongest Basic)7.92ChemAxon
Physiological Charge-1ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count5ChemAxon
Polar Surface Area160.29 Å2ChemAxon
Rotatable Bond Count4ChemAxon
Refractivity60.44 m3·mol-1ChemAxon
Polarizability24.9 Å3ChemAxon
Number of Rings2ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Cytoplasm
5-Aminoimidazole ribonucleotide + Adenosine triphosphate + Hydrogen carbonate > 5-Phosphoribosyl-5-carboxyaminoimidazole + ADP + Hydrogen ion + Phosphate
Adenosine triphosphate + Phosphoribosylformylglycineamidine <> ADP + 5-Aminoimidazole ribonucleotide +2 Hydrogen ion + Phosphate
5-Aminoimidazole ribonucleotide + Water + NAD > 4-Amino-2-methyl-5-phosphomethylpyrimidine +2 Formic acid +3 Hydrogen ion + NADH
4-Amino-5-hydroxymethyl-2-methylpyrimidine + S-Adenosylmethionine <> 5-Aminoimidazole ribonucleotide + 4-Amino-2-methyl-5-phosphomethylpyrimidine + 5'-Deoxyadenosine + L-Methionine + Formic acid + CO
Adenosine triphosphate + Phosphoribosylformylglycineamidine <> ADP + Phosphate + 5-Aminoimidazole ribonucleotide
Adenosine triphosphate + 5-Aminoimidazole ribonucleotide + Hydrogen carbonate <> ADP + Phosphate + 5-Carboxyamino-1-(5-phospho-D-ribosyl)imidazole + 5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole
5-Aminoimidazole ribonucleotide + S-Adenosylmethionine 4-Amino-2-methyl-5-phosphomethylpyrimidine + 5'-Deoxyadenosine + L-Methionine + Formic acid + carbon monoxide + Hydrogen ion
5-Aminoimidazole ribonucleotide + Adenosine triphosphate + Hydrogen carbonate > Hydrogen ion + N5-Carboxyaminoimidazole ribonucleotide + ADP + Phosphate
Adenosine triphosphate + 2-(Formamido)-N(1)-(5-phospho-D-ribosyl)acetamidine > ADP + Inorganic phosphate + 5-Aminoimidazole ribonucleotide
Adenosine triphosphate + 5-Aminoimidazole ribonucleotide + Carbonic acid > ADP + Inorganic phosphate + 5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole
5-Amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate <> 5-Aminoimidazole ribonucleotide + Carbon dioxide
2-(Formamido)-N1-(5-phospho-D-ribosyl)acetamidine + Adenosine triphosphate > 5-Aminoimidazole ribonucleotide + Phosphate + Adenosine diphosphate + Hydrogen ion + ADP
5-Aminoimidazole ribonucleotide + Hydrogen carbonate + Adenosine triphosphate > N5-Carboxyaminoimidazole ribonucleotide + Adenosine diphosphate + Phosphate +2 Hydrogen ion + N5-Carboxyaminoimidazole ribonucleotide + ADP
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-MSNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-001i-9130000000-143cf7dfaf8cc77d6280View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-001i-9000000000-26b4d68163a88586005bView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-001i-9000000000-87449f0e16a1690c4873View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0036-9160000000-50e60dc03e3bb2050636View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0059-9000000000-797c3e0faf96fe4330aaView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9000000000-9e3a71c432cedbcd3892View in MoNA
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  • 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
  • Lawhorn, B. G., Mehl, R. A., Begley, T. P. (2004). "Biosynthesis of the thiamin pyrimidine: the reconstitution of a remarkable rearrangement reaction." Org Biomol Chem 2:2538-2546. Pubmed: 15326535
  • Ogata M, Michitsuji H, Fujiki Y: Estimating amounts of toluene inhaled by workers with protective mask using biological indicators of toluene. Toxicol Lett. 1999 Sep 5;108(2-3):233-9. Pubmed: 10511267
  • 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
  • Vetvik H, Grewal HM, Haugen IL, Ahren C, Haneberg B: Mucosal antibodies can be measured in air-dried samples of saliva and feces. J Immunol Methods. 1998 Jun 1;215(1-2):163-72. Pubmed: 9744758
Synthesis Reference: Groziak M P; Bhat B; Leonard N J Nonenzymatic synthesis of 5-aminoimidazole ribonucleoside and recognition of its facile rearrangement. Proceedings of the National Academy of Sciences of the United States of America (1988), 85(19), 7174-6.
Material Safety Data Sheet (MSDS) Not Available
External Links:
Pubchem Compound ID161500
Kegg IDC03373
ChemSpider ID141854
Wikipedia IDNot Available
Ligand ExpoAIR