EC 3.5.1.65     
Accepted name: theanine hydrolase
Reaction: N5-ethyl-L-glutamine + H2O = L-glutamate + ethylamine
Glossary: L-theanine = N5-ethyl-L-glutamine
Other name(s): L-theanine amidohydrolase; 5-N-ethyl-L-glutamine amidohydrolase
Systematic name: N5-ethyl-L-glutamine amidohydrolase
Comments: Also acts on other N-alkyl-L-glutamines.
References:
1.  Tsushida, T. and Takeo, T. An enzyme hydrolyzing L-theanine in tea leaves. Agric. Biol. Chem. 49 (1985) 2913–2917.
[EC 3.5.1.65 created 1989]