FORMATION OF BIODEGRADATIVE THREONINE DEAMINASE IN ESCHERICHIA COLI

スポンサーリンク

概要

• 論文の詳細を見る

• Studies were carried out on the formation of biodegradative L-threonine deaminase (EC 4.2.1.16) in resting cells of Escherichia coli. The results obtained are as follows: (1) The enzyme level was increased by adding L-threonine together with yeast extract to the cell suspension. (2) In the course of the enzyme formation, the addition of chloramphenicol or glucose to the medium resulted in instantaneous cessation of the enzyme synthesis. (3) Yeast extract could be partially replaced by casamino acids. A mixture of amino acids whose composition is similar to that of milk casein was also effective. (4) Omission of L-serine from the mixture caused an almost complete loss of the activity, indicating that L-serine as well as L-threonine was essentially required for the enzyme formation. (5) Other amino acids were also needed for the enzyme synthesis, although individual omission of them had a slight influence compared with that of L-serine.

• 財団法人 学会誌刊行センターの論文

著者

• 上原 悌次郎

  Department of Medical Chemistry, Faculty of Medicine, Kyoto University

• 徳重 正信

  Department of Medical Chemistry, Faculty of Medicine, Kyoto University

関連論文

• FORMATION OF BIODEGRADATIVE THREONINE DEAMINASE IN ESCHERICHIA COLI
• ON THE ROLE OF PYRIDOXAL PHOSPHATE FOR AMP-DEPENDENT THREONINE DEAMINASE OF ESCHERICHIA COLI

スポンサーリンク