Methylenediurea deaminase

Identifiers

Databases

PDB structures

Methylenediurea deaminase (EC 3.5.3.21, methylenediurease) is an enzyme with systematic name methylenediurea aminohydrolase.^[1] This enzyme catalyses the following chemical reaction

methylenediurea + 2 H₂O

\rightleftharpoons

N-(hydroxymethyl)urea + 2 NH₃ + CO₂ (overall reaction)

(1a) methylenediurea + H₂O

\rightleftharpoons

N-(carboxyaminomethyl)urea + NH₃

(1b) N-(carboxyaminomethyl)urea

\rightleftharpoons

N-(aminomethyl)urea + CO₂ (spontaneous)

(1c) N-(aminomethyl)urea + H₂O

\rightleftharpoons

N-(hydroxymethyl)urea + NH₃ (spontaneous)

Methylenediurea is hydrolysed and decarboxylated to give an aminated methylurea.

References

↑ Jahns, T., Schepp, R., Kaltwasser, H. (1997). "Purification and characterisation of an enzyme from a strain of Ochrobactrum anthroπ that degrades condensation products of urea and formaldehyde (ureaform)". Can. J. Microbiol. 43: 1111–1117. doi:10.1139/m97-159.

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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