mentioned method to confer on the microorganism the ability to produce the amino acid specific examples of the microorganisms of the present invention include escherichia coli h 9341 ferm bp 6674 the production of the amino acid by using the microorganism of the present invention can be carried out by an conventional method for culturing bacteria as the medium used for the production of the amino acid any of synthetic medium or natural medium may be used so long as it appropriately contains a carbon source a nitrogen source an inorganic substance and trace amounts of nutrients which the strain requires as the carbon source carbohydrates such as glucose fructose lactose molasses cellulose hydrolysates crude saccharide hydrolysates and starch hydrolysates organic acids such as pyruvic acid acetic acid fumaric acid malic acid and lactic acid and alcohols such as glycerin and ethanol can be used as the nitrogen source ammonia various inorganic salts such as ammonium chloride ammonium sulfate ammonium acetate and ammonium phosphate ammonium salts of organic acids amines peptone meat extract corn steep liquor casein hydrolysates soybean cake hydrolysates various fermented cells and digested matters thereof can be used as the inorganic substance potassium dihydrogen phosphate dipotassium hydrogen phosphate magnesium phosphate magnesium sulfate magnesium chloride sodium chloride ferrous sulfate manganese sulfate copper sulfate calcium chloride and calcium carbonate can be used the microorganism is cultured under aerobic conditions such as shaking culture and aerated.