Welcome to Journal of Tea Science,Today is

Journal of Tea Science ›› 2011, Vol. 31 ›› Issue (1): 1-10.doi: 10.13305/j.cnki.jts.2011.01.001

    Next Articles

Review on Enzymatic Biosynthesis of Theanine

CHEN Lin1,2, ZHANG Zheng-zhu2, CHEN Jian1, ZHANG Ying-gen1,2, WAN Xiao-chun2*   

  1. 1. Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu’an 355015, China;
    2. Anhui Agricultural University, Key Laboratory of Tea Biochemistry & Biotechnology, Ministry of Education, Hefei 230036, China;
  • Received:2010-06-29 Revised:2010-09-02 Online:2011-02-15 Published:2019-09-06

Abstract: As a characteristic component in tea plant (Camellia sinensis), theanine has many favorable physiological effects, such as promoting relaxation, enhancing memory, neuroprotection, modulation of chemotherapy, etc. So far, seven kinds of enzyme have been discovered by which theanine can be synthesized. They are respectively named as theanine synthetase, glutamine synthetase, γ-glutamylmethylamide synthetase, glutamate synthetase, γ-glutamylcysteine synthetase, glutaminase and γ-glutamyltranspeptidase. The two representative reaction types for theanine biosynthesis are linking reaction between glutamic acid and ethylamine in the presence of ATP and γ-glutamyl transfer reaction in which γ-glutamyl group from hydrolysis of glutamine is transferred to ethylamine. In order to apply and develop the exiting methods for microbial production of theanine, the ways involved in enzymatic synthesis of theanine are systematically summarized in this paper.

Key words: theanine, biosynthesis, enzyme, review

CLC Number: