Record Information
Version 1.0
Update Date 1/22/2018 12:54:54 PM
Metabolite IDPAMDB000337
Name: N5-Carboxyaminoimidazole ribonucleotide
Description:N5-carboxyaminoimidazole ribonucleotide is a member of the chemical class known as 1-Phosphoribosyl-imidazoles. These are organic compounds containing the imidazole ring linked to a ribose phosphate through a 1-2 bond. The carbamic acid, N5-carboxyaminoimidazole ribonucleotide (N5-CAIR) is an intermediate in purine biosynthesis in Pseudomonas aeruginosa. (PMID 7918411) Formation of 4-carboxy-5-aminoimidazole ribonucleotide (CAIR) in the purine pathway in most prokaryotes requires ATP, HCO3-, aminoimidazole ribonucleotide (AIR), and the gene products PurK and PurE. PurK catalyzes the conversion of AIR to N5-carboxyaminoimidazole ribonucleotide (N5-CAIR) in a reaction that requires both ATP and HCO3-. PurE catalyzes the unusual rearrangement of N5-CAIR to CAIR.
  • 5-Aminoimidazol-4-carboxamide ribonucleotide
  • 5-Phosphoribosyl-5-carboxyaminoimidazole
  • N5-CAIR
  • N5-CAIR
  • N5-carboxyaminoimidazole ribonucleotide
Chemical Formula: C9H14N3O9P
Average Molecular Weight: 339.1959
Monoisotopic Molecular Weight: 339.046765573
CAS number: Not Available
IUPAC Name:5-amino-1-{3,4-dihydroxy-5-[(phosphonooxy)methyl]oxolan-2-yl}-1H-imidazole-4-carboxylate
Traditional IUPAC Name: 5-amino-1-{3,4-dihydroxy-5-[(phosphonooxy)methyl]oxolan-2-yl}imidazole-4-carboxylate
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
  • Aminoimidazole
  • Heteroaromatic compound
  • Vinylogous amide
  • Oxolane
  • Imidazole
  • Azole
  • Secondary alcohol
  • 1,2-diol
  • Oxacycle
  • Azacycle
  • Organoheterocyclic compound
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Amine
  • Alcohol
  • Organic anion
  • Aromatic heteromonocyclic compound
Molecular Framework Aromatic heteromonocyclic compounds
External Descriptors Not Available
Physical Properties
State: Not Available
Melting point: Not Available
Experimental Properties:
Predicted Properties
Water Solubility3.7 mg/mLALOGPS
pKa (Strongest Acidic)1.17ChemAxon
pKa (Strongest Basic)7.11ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count10ChemAxon
Hydrogen Donor Count5ChemAxon
Polar Surface Area200.42 Å2ChemAxon
Rotatable Bond Count5ChemAxon
Refractivity78.16 m3·mol-1ChemAxon
Polarizability28.19 Å3ChemAxon
Number of Rings2ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations: Cytoplasm
Pathways: Not Available
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-000i-1009000000-f52aa11320ddc5de5423View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0012-5219000000-c0eed1bce9a15cd855b4View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0005-9500000000-0581d72177da95af5538View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-000i-1009000000-67b123b7d315754fbcf9View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-004j-9020000000-bb29957fea4db103eb81View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-004i-9000000000-59eb08da2b3176098f8cView in MoNA
  • Firestine, S. M., Poon, S. W., Mueller, E. J., Stubbe, J., Davisson, V. J. (1994). "Reactions catalyzed by 5-aminoimidazole ribonucleotide carboxylases from Escherichia coli and Gallus gallus: a case for divergent catalytic mechanisms." Biochemistry 33:11927-11934. Pubmed: 7918411
  • 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
  • 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
Synthesis Reference: Not Available
Material Safety Data Sheet (MSDS) Not Available
External Links:
CHEBI IDNot Available
Pubchem Compound ID656466
Kegg IDNot Available
ChemSpider ID570854
Wikipedia IDNot Available
BioCyc IDCPD0-181
EcoCyc IDCPD0-181