S-methyl-5'-thioadenosine deaminase

S-methyl-5'-thioadenosine deaminase (EC 3.5.4.31, MTA deaminase, 5-methylthioadenosine deaminase) is an enzyme with systematic name S-methyl-5'-thioadenosine amidohydrolase.^[1] This enzyme catalyses the following chemical reaction

S-methyl-5'-thioadenosine + H₂O

\rightleftharpoons

5'-S-methyl-5'-thioinosine + NH₃

The enzyme from Thermotoga maritima also functions as S-adenosylhomocysteine deaminase (EC 3.5.4.28).

References

↑ Hermann, J.C., Marti-Arbona, R., Fedorov, A.A., Fedorov, E., Almo, S.C., Shoichet, B.K. and Raushel, F.M. (2007). "Structure-based activity prediction for an enzyme of unknown function". Nature 448: 775–779. doi:10.1038/nature05981. PMC 2254328. PMID 17603473.

External links

S-methyl-5'-thioadenosine deaminase at the US National Library of Medicine Medical Subject Headings (MeSH)

Hydrolases: carbon-nitrogen non-peptide (EC 3.5)

3.5.1: Linear amides / Amidohydrolases	Asparaginase Glutaminase Urease Biotinidase Aspartoacylase Ceramidase Aspartylglucosaminidase Fatty acid amide hydrolase Histone deacetylase Sirtuin

3.5.2: Cyclic amides/ Amidohydrolases	Barbiturase Beta-lactamase

3.5.3: Linear amidines/ Ureohydrolases	Arginase Agmatinase Protein-arginine deiminase

3.5.4: Cyclic amidines/ Aminohydrolases	Guanine deaminase Adenosine deaminase AMP deaminase Inosine monophosphate synthase DCMP deaminase GTP cyclohydrolase I Cytidine deaminase AICDA Activation-induced cytidine deaminase

3.5.5: Nitriles/ Aminohydrolases	Nitrilase

3.5.99: Other	Riboflavinase Thiaminase II

Enzymes

Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Catalytically perfect enzyme Coenzyme Cofactor Enzyme catalysis Enzyme kinetics Lineweaver–Burk plot Michaelis–Menten kinetics

Regulation	Allosteric regulation Cooperativity Enzyme inhibitor

Classification	EC number Enzyme superfamily Enzyme family List of enzymes

Types	EC1 Oxidoreductases(list) EC2 Transferases(list) EC3 Hydrolases(list) EC4 Lyases(list) EC5 Isomerases(list) EC6 Ligases(list)

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