The Enzyme Database

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EC 3.13.1.9     
Accepted name: S-inosyl-L-homocysteine hydrolase
Reaction: S-inosyl-L-homocysteine + H2O = inosine + L-homocysteine
Other name(s): SIHH
Systematic name: S-inosyl-L-homocysteine hydrolase (inosine-forming)
Comments: The enzyme, characterized from the methanogenic archaeon Methanocaldococcus jannaschii, binds an NAD+ cofactor. It participates in an alternative pathway for the regeneration of S-adenosyl-L-methionine from S-adenosyl-L-homocysteine that involves the deamination of the latter to S-inosyl-L-homocysteine.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Miller, D., Xu, H. and White, R.H. S-Inosyl-L-homocysteine hydrolase, a novel enzyme involved in S-adenosyl-L-methionine recycling. J. Bacteriol. 197 (2015) 2284–2291. [DOI] [PMID: 25917907]
[EC 3.13.1.9 created 2020]
 
 


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