Record Information
Version2.0
Creation Date2012-05-31 10:25:56 -0600
Update Date2015-09-13 12:56:07 -0600
Secondary Accession Numbers
  • ECMDB00296
Identification
Name:Uridine
DescriptionUridine is a molecule (known as a nucleoside) that is formed when uracil is attached to a ribose ring (also known as a ribofuranose) via a b-N1-glycosidic bond. (Wikipedia)
Structure
Thumb
Synonyms:
  • 1-b-D-Ribofuranosyl-2,4(1H,3H)-pyrimidinedione
  • 1-b-D-Ribofuranosyluracil
  • 1-b-delta-Ribofuranosyl-2,4(1H,3H)-pyrimidinedione
  • 1-b-delta-Ribofuranosyluracil
  • 1-b-δ-Ribofuranosyl-2,4(1H,3H)-pyrimidinedione
  • 1-b-δ-Ribofuranosyluracil
  • 1-beta-delta-Ribofuranosyl-2,4(1H,3H)-pyrimidinedione
  • 1-beta-delta-Ribofuranosyluracil
  • 1-β-δ-Ribofuranosyl-2,4(1H,3H)-pyrimidinedione
  • 1-β-δ-Ribofuranosyluracil
  • B-D-Ribofuranoside 2,4(1H,3H)-pyrimidinedione-1
  • b-delta-Ribofuranoside 2,4(1H,3H)-pyrimidinedione-1
  • B-Uridine
  • b-δ-Ribofuranoside 2,4(1H,3H)-pyrimidinedione-1
  • Beta-delta-Ribofuranoside 2,4(1H,3H)-pyrimidinedione-1
  • Beta-Uridine
  • Uridin
  • β-Uridine
  • β-δ-Ribofuranoside 2,4(1H,3H)-pyrimidinedione-1
Chemical Formula:C9H12N2O6
Weight:Average: 244.2014
Monoisotopic: 244.069536126
InChI Key:DRTQHJPVMGBUCF-XVFCMESISA-N
InChI:InChI=1S/C9H12N2O6/c12-3-4-6(14)7(15)8(17-4)11-2-1-5(13)10-9(11)16/h1-2,4,6-8,12,14-15H,3H2,(H,10,13,16)/t4-,6-,7-,8-/m1/s1
CAS number:58-96-8
IUPAC Name:1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-1,2,3,4-tetrahydropyrimidine-2,4-dione
Traditional IUPAC Name:uridine
SMILES:OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)N1C=CC(=O)NC1=O
Chemical Taxonomy
Description belongs to the class of organic compounds known as pyrimidine nucleosides. Pyrimidine nucleosides are compounds comprising a pyrimidine base attached to a ribosyl or deoxyribosyl moiety.
KingdomOrganic compounds
Super ClassNucleosides, nucleotides, and analogues
ClassPyrimidine nucleosides
Sub ClassNot Available
Direct ParentPyrimidine nucleosides
Alternative Parents
Substituents
  • Pyrimidine nucleoside
  • Glycosyl compound
  • N-glycosyl compound
  • Pentose monosaccharide
  • Pyrimidone
  • Hydropyrimidine
  • Monosaccharide
  • Pyrimidine
  • Vinylogous amide
  • Tetrahydrofuran
  • Heteroaromatic compound
  • Urea
  • Secondary alcohol
  • Lactam
  • Organoheterocyclic compound
  • Oxacycle
  • Azacycle
  • Hydrocarbon derivative
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Primary alcohol
  • Alcohol
  • Organic oxygen compound
  • Organic oxide
  • Organic nitrogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors
Physical Properties
State:Solid
Charge:0
Melting point:163 °C
Experimental Properties:
PropertyValueSource
LogP:-1.98 [HANSCH,C ET AL. (1995)]PhysProp
Predicted Properties
PropertyValueSource
Water Solubility135 g/LALOGPS
logP-1.8ALOGPS
logP-2.4ChemAxon
logS-0.26ALOGPS
pKa (Strongest Acidic)9.7ChemAxon
pKa (Strongest Basic)-3ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count6ChemAxon
Hydrogen Donor Count4ChemAxon
Polar Surface Area119.33 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity52.57 m³·mol⁻¹ChemAxon
Polarizability21.81 ųChemAxon
Number of Rings2ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
Reactions:
SMPDB Pathways:
Pyrimidine metabolismPW000942 ThumbThumb?image type=greyscaleThumb?image type=simple
Pyrimidine ribonucleosides degradtionPW002024 ThumbThumb?image type=greyscaleThumb?image type=simple
pyrimidine ribonucleosides degradationPW002104 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:
  • pyrimidine ribonucleosides degradation I PWY0-1295
  • salvage pathways of pyrimidine ribonucleotides PWY0-163
Concentrations
ConcentrationStrainMediaGrowth StatusGrowth SystemTemperatureDetails
2090± 0 uMK12 NCM3722Gutnick minimal complete medium (4.7 g/L KH2PO4; 13.5 g/L K2HPO4; 1 g/L K2SO4; 0.1 g/L MgSO4-7H2O; 10 mM NH4Cl) with 4 g/L glucoseMid-Log PhaseShake flask and filter culture37 oCPMID: 19561621
Find out more about how we convert literature concentrations.
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-00kb-1970000000-d1bfa838a4e9fa77c862View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-00kb-1960000000-a8283468b762a8520102View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (Non-derivatized)splash10-014i-1950000000-70fdf4785544d0968f70View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Pegasus III TOF-MS system, Leco; GC 6890, Agilent Technologies) (3 TMS)splash10-00di-9520000000-591c0bcf8f956d710367View in MoNA
GC-MSGC-MS Spectrum - GC-MS (4 TMS)splash10-066s-2970000000-36fbef6f6b10c2895df4View in MoNA
GC-MSGC-MS Spectrum - GC-MS (3 TMS)splash10-014i-1890000000-dd0569d4351a64c566c9View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-1970000000-d1bfa838a4e9fa77c862View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-1960000000-a8283468b762a8520102View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014i-1950000000-70fdf4785544d0968f70View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00di-9520000000-591c0bcf8f956d710367View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-066s-2970000000-36fbef6f6b10c2895df4View in MoNA
GC-MSGC-MS Spectrum - GC-MS (Non-derivatized)splash10-014i-1890000000-dd0569d4351a64c566c9View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-014j-1940000000-8b7a5ce66afa9b9bf939View in MoNA
GC-MSGC-MS Spectrum - GC-EI-TOF (Non-derivatized)splash10-00kb-1950000000-00519445de22f955367dView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-056u-9530000000-e83d5f042dbda82911cfView in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (3 TMS) - 70eV, Positivesplash10-0g30-5935200000-88c9a24e13b0f41cbc83View in MoNA
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_1) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_3) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_1_4) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_1) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_2) - 70eV, PositiveNot AvailableView in JSpectraViewer
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (TMS_2_3) - 70eV, PositiveNot AvailableView in JSpectraViewer
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 10V, Positive (Annotated)splash10-03di-0900000000-7010b37007f5c3d9ce1fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 25V, Positive (Annotated)splash10-03di-3900000000-b4639c8c89eac6158da6View in MoNA
LC-MS/MSLC-MS/MS Spectrum - Quattro_QQQ 40V, Positive (Annotated)splash10-022a-9200000000-f8472930d09b32f54790View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014i-0291000000-aebaa77a411473acb859View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-014j-9000000000-205562662b564ebdca28View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-03di-0900000000-776595fd1c19f6ec51cdView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-0900000000-10358e53c56bcb50ed4cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-0002-0971000000-f989283d2dec564a3af0View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-00kf-9000000000-c11e7bfdec0b5c7bf450View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-000i-9000000000-104e62fbffc4110779efView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Positivesplash10-03di-0900000000-eaf6ff9ac3971d6f045fView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-052f-0697120000-c9fd5b8d641165d84e92View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0006-9000000000-995de18be458c48a8d2dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0udi-0590000000-4d1d6aba25697dd11da8View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0uki-0190000000-3aea11527d0520158d77View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-004l-0291010000-c8f22405e9290fccc011View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0udi-0490000000-1a2f990a874bb1868249View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0006-0090000000-c8efbe58f0df63698b2cView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-ITFT (LTQ Orbitrap XL, Thermo Scientfic) , Negativesplash10-0006-0090000000-7495d9b948a8e3b7b83bView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 10V, Positivesplash10-03dj-3960000000-3466ccfdf88139ddf140View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 20V, Positivesplash10-03di-3900000000-0d08e4a7d4b8aacee6e6View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 30V, Positivesplash10-03di-4900000000-d942ee27b3ca1d6ef94dView in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 40V, Positivesplash10-03di-9700000000-594c7bb6dc6de848ff11View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-QQ (API3000, Applied Biosystems) 50V, Positivesplash10-022d-9100000000-2826c4eb794745ec3148View in MoNA
LC-MS/MSLC-MS/MS Spectrum - LC-ESI-IT (LC/MSD Trap XCT, Agilent Technologies) , Positivesplash10-03di-0910000000-617b4ec6cf749942c0cdView in MoNA
MSMass Spectrum (Electron Ionization)splash10-08mi-9400000000-bafe048989f1a5c86d2dView in MoNA
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR1H NMR SpectrumNot AvailableView in JSpectraViewer
1D NMR13C NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,1H] 2D NMR SpectrumNot AvailableView in JSpectraViewer
2D NMR[1H,13C] 2D NMR SpectrumNot AvailableView in JSpectraViewer
References
References:
  • Bennett, B. D., Kimball, E. H., Gao, M., Osterhout, R., Van Dien, S. J., Rabinowitz, J. D. (2009). "Absolute metabolite concentrations and implied enzyme active site occupancy in Escherichia coli." Nat Chem Biol 5:593-599. Pubmed: 19561621
  • Eells JT, Spector R: Purine and pyrimidine base and nucleoside concentrations in human cerebrospinal fluid and plasma. Neurochem Res. 1983 Nov;8(11):1451-7. Pubmed: 6656991
  • 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
  • Lee SH, Jung BH, Kim SY, Chung BC: A rapid and sensitive method for quantitation of nucleosides in human urine using liquid chromatography/mass spectrometry with direct urine injection. Rapid Commun Mass Spectrom. 2004;18(9):973-7. Pubmed: 15116424
  • 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:Doi, Muneharu; Asahi, Satoru; Izawa, Motoo. Fermentative production of uridine and cytidine. Baiosaiensu to Indasutori (1993), 51(12), 972-6.
Material Safety Data Sheet (MSDS)Download (PDF)
External Links:
ResourceLink
CHEBI ID16704
HMDB IDHMDB00296
Pubchem Compound ID6029
Kegg IDC00299
ChemSpider ID5807
WikipediaUridine
BioCyc IDURIDINE
EcoCyc IDURIDINE
Ligand ExpoURI

Enzymes

General function:
Involved in hydrolase activity
Specific function:
Degradation of external UDP-glucose to uridine monophosphate and glucose-1-phosphate, which can then be used by the cell
Gene Name:
ushA
Uniprot ID:
P07024
Molecular weight:
60824
Reactions
UDP-sugar + H(2)O = UMP + alpha-D-aldose 1-phosphate.
A 5'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
General function:
Involved in hydrolase activity
Specific function:
This bifunctional enzyme catalyzes two consecutive reactions during ribonucleic acid degradation. Converts a 2',3'- cyclic nucleotide to a 3'-nucleotide and then the 3'-nucleotide to the corresponding nucleoside and phosphate
Gene Name:
cpdB
Uniprot ID:
P08331
Molecular weight:
70832
Reactions
Nucleoside 2',3'-cyclic phosphate + H(2)O = nucleoside 3'-phosphate.
A 3'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
General function:
Involved in hydrolase activity
Specific function:
Nucleotidase with a broad substrate specificity as it can dephosphorylate various ribo- and deoxyribonucleoside 5'- monophosphates and ribonucleoside 3'-monophosphates with highest affinity to 3'-AMP. Also hydrolyzes polyphosphate (exopolyphosphatase activity) with the preference for short-chain- length substrates (P20-25). Might be involved in the regulation of dNTP and NTP pools, and in the turnover of 3'-mononucleotides produced by numerous intracellular RNases (T1, T2, and F) during the degradation of various RNAs. Also plays a significant physiological role in stress-response and is required for the survival of E.coli in stationary growth phase
Gene Name:
surE
Uniprot ID:
P0A840
Molecular weight:
26900
Reactions
A 5'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
A 3'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
(Polyphosphate)(n) + H(2)O = (polyphosphate)(n-1) + phosphate.
General function:
Involved in ATP binding
Specific function:
ATP + uridine = ADP + UMP
Gene Name:
udk
Uniprot ID:
P0A8F4
Molecular weight:
24353
Reactions
ATP + uridine = ADP + UMP.
ATP + cytidine = ADP + CMP.
General function:
Involved in catalytic activity
Specific function:
Nucleotidase that shows high phosphatase activity toward three nucleoside 5'-monophosphates, UMP, dUMP, and dTMP, and very low activity against TDP, IMP, UDP, GMP, dGMP, AMP, dAMP, and 6- phosphogluconate. Is strictly specific to substrates with 5'- phosphates and shows no activity against nucleoside 2'- or 3'- monophosphates. Might be involved in the pyrimidine nucleotide substrate cycles
Gene Name:
yjjG
Uniprot ID:
P0A8Y1
Molecular weight:
25300
Reactions
A 5'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
General function:
Involved in zinc ion binding
Specific function:
This enzyme scavenge exogenous and endogenous cytidine and 2'-deoxycytidine for UMP synthesis
Gene Name:
cdd
Uniprot ID:
P0ABF6
Molecular weight:
31539
Reactions
Cytidine + H(2)O = uridine + NH(3).
General function:
Involved in acid phosphatase activity
Specific function:
Dephosphorylates several organic phosphomonoesters and catalyzes the transfer of low-energy phosphate groups from phosphomonoesters to hydroxyl groups of various organic compounds. Preferentially acts on aryl phosphoesters. Might function as a broad-spectrum dephosphorylating enzyme able to scavenge both 3'- and 5'-nucleotides and also additional organic phosphomonoesters
Gene Name:
aphA
Uniprot ID:
P0AE22
Molecular weight:
26103
Reactions
A phosphate monoester + H(2)O = an alcohol + phosphate.
General function:
Involved in transferase activity, transferring pentosyl groups
Specific function:
Catalyzes the reversible phosphorylytic cleavage of uridine and deoxyuridine to uracil and ribose- or deoxyribose-1- phosphate. The produced molecules are then utilized as carbon and energy sources or in the rescue of pyrimidine bases for nucleotide synthesis
Gene Name:
udp
Uniprot ID:
P12758
Molecular weight:
27159
Reactions
Uridine + phosphate = uracil + alpha-D-ribose 1-phosphate.
General function:
Involved in hydrolase activity, hydrolyzing N-glycosyl compounds
Specific function:
Hydrolyzes both purine and pyrimidine ribonucleosides with a broad-substrate specificity with decreasing activity in the order uridine, xanthosine, inosine, adenosine, cytidine, guanosine
Gene Name:
rihC
Uniprot ID:
P22564
Molecular weight:
32560
General function:
Involved in hydrolase activity, hydrolyzing N-glycosyl compounds
Specific function:
Hydrolyzes cytidine or uridine to ribose and cytosine or uracil, respectively. Has a clear preference for cytidine over uridine. Strictly specific for ribonucleosides. Has a low but significant activity for the purine nucleoside xanthosine
Gene Name:
rihB
Uniprot ID:
P33022
Molecular weight:
33748
Reactions
A pyrimidine nucleoside + H(2)O = D-ribose + a pyrimidine base.
General function:
Involved in catalytic activity
Specific function:
Nucleotidase that shows strict specificity toward deoxyribonucleoside 5'-monophosphates and does not dephosphorylate 5'-ribonucleotides or ribonucleoside 3'-monophosphates. Might be involved in the regulation of all dNTP pools in E.coli
Gene Name:
yfbR
Uniprot ID:
P76491
Molecular weight:
22708
Reactions
A 5'-ribonucleotide + H(2)O = a ribonucleoside + phosphate.
General function:
Involved in hydrolase activity, hydrolyzing N-glycosyl compounds
Specific function:
Hydrolyzes with equal efficiency cytidine or uridine to ribose and cytosine or uracil, respectively
Gene Name:
rihA
Uniprot ID:
P41409
Molecular weight:
33823

Transporters

General function:
Involved in nucleoside transmembrane transporter activity
Specific function:
Nucleoside transport
Gene Name:
xapB
Uniprot ID:
P45562
Molecular weight:
46139
General function:
Involved in nucleoside:sodium symporter activity
Specific function:
Transports nucleosides with a high affinity except guanosine and deoxyguanosine. Driven by a proton motive force
Gene Name:
nupC
Uniprot ID:
P0AFF2
Molecular weight:
43475
General function:
Involved in nucleoside transmembrane transporter activity
Specific function:
Transports nucleosides with a high affinity. Driven by a proton motive force
Gene Name:
nupG
Uniprot ID:
P0AFF4
Molecular weight:
46389
General function:
Involved in nucleoside:sodium symporter activity
Specific function:
Nucleoside transporter
Gene Name:
nupX
Uniprot ID:
P33021
Molecular weight:
43409
General function:
Involved in nucleoside transmembrane transporter activity
Specific function:
Constitutes the receptor for colicin K and phage T6, and functions as substrate-specific channel for nucleosides and deoxynucleosides
Gene Name:
tsx
Uniprot ID:
P0A927
Molecular weight:
33589