A bacterium belonging to the genus Escherichia and having an ability to produce a 1-amino acid selected from the group consisting of 1-glutamic acid, 1-histidine, 1-proline and 1-threonine, and process for producing a 1-amino acid selected from the group. which consists of 1-glutamic acid, 1-histidine, 1-proline and 1-threonine.

摘要

A bacterium belonging to the genus Escherichia and having an ability to produce an L-amino acid, wherein the ability to produce the L-amino acid is increased by increasing an expression amount of an L-amino acid excretion protein, and a method for producing the L-amino acid using the bacterium.