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7-Methylxanthine demethylase

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7-Methylxanthine demethylase
Identifiers
EC no.1.14.13.128
Databases
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BRENDABRENDA entry
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MetaCycmetabolic pathway
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7-Methylxanthine demethylase (EC 1.14.13.128) is an enzyme with systematic name 7-methylxanthine:oxygen oxidoreductase (demethylating).[1] This enzyme catalyses the following chemical reaction

+ NADH
 
 
O2 + H+
H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 
+ NAD+ + H2CO
 


The four substrates of this enzyme are 7-methylxanthine, reduced nicotinamide adenine dinucleotide (NADH), oxygen, and a proton. Its products are xanthine, oxidised NAD+, water, and formaldehyde.[2]

The enzyme is a non-heme iron protein that is part of the pathway of caffeine degradation in Pseudomonas putida.[3]

References

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  1. ^ Summers, Ryan M.; Louie, Tai Man; Yu, Chi Li; Subramanian, Mani (2011). "Characterization of a broad-specificity non-haem iron N-demethylase from Pseudomonas putida CBB5 capable of utilizing several purine alkaloids as sole carbon and nitrogen source". Microbiology. 157 (2): 583–592. doi:10.1099/mic.0.043612-0. PMID 20966097.
  2. ^ Enzyme 1.14.13.128 at KEGG Pathway Database.
  3. ^ Summers, Ryan M.; Louie, Tai Man; Yu, Chi-Li; Gakhar, Lokesh; Louie, Kailin C.; Subramanian, Mani (2012). "Novel, Highly Specific N -Demethylases Enable Bacteria to Live on Caffeine and Related Purine Alkaloids". Journal of Bacteriology. 194 (8): 2041–2049. doi:10.1128/JB.06637-11. PMC 3318484. PMID 22328667.
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