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Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
Metabolic Modeling Tutorial
discounted EARLY registration ends Dec 31, 2014
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MetaCyc Enzyme: NMN nucleosidase

Species: Nicotiana tabacum

Summary:
The enzyme activity of NMN nucleosidase (synonym NMN glycohydrolase - NMN-Ghase) has been detected in roots [Wagner86] and induced callus cultures of Nicotiana tabacum [Wagner86b]. The partially purified NMN-Ghase from tobacco catalyzed the formation of nicotinamide through hydrolysis of nicotinamide mononucleotide (NMN) with high efficiency [Wagner86a].

Gene-Reaction Schematic: ?

Credits:
Created 24-Oct-2006 by Foerster H , TAIR


Enzymatic reaction of: NMN nucleosidase

Synonyms: NMN glycohydrolase

EC Number: 3.2.2.14

β-nicotinamide D-ribonucleotide + H2O <=> D-ribofuranose 5-phosphate + nicotinamide + H+

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.

The reaction is physiologically favored in the direction shown.

In Pathways: pyridine nucleotide cycling (plants)

Kinetic Parameters:

Substrate
Km (μM)
Citations
β-nicotinamide D-ribonucleotide
220.0
[Wagner86a]


References

Wagner86: Wagner R, Feth F, Wagner KG (1986). "The regulation of enzyme activities of the nicotine pathway in tobacco." Physiol. Plantarum, 68, 667-672.

Wagner86a: Wagner R, Feth F, Wagner KG (1986). "The pyridine-nucleotide cycle in tobacco. Enzyme activities for the recycling of NAD." Planta,167, 226-232.

Wagner86b: Wagner R, Feth F, Wagner KG (1986). "Regulation in tobacco callus of enzyme activities of the nicotine pathway II. The pyridine-nucleotide cycle ." Planta,168, 408-413.


Report Errors or Provide Feedback
Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
Page generated by SRI International Pathway Tools version 18.5 on Thu Dec 18, 2014, biocyc13.