FIELD: biotechnology, amino acids. SUBSTANCE: method for microbiological preparing amino acids involves the enhancement of activity of export-carrier and/or expression of export-gene of microorganism producing the desirable amino acid. A single specific gene carries responsibility for export of this amino acid and the basic method for microbiological preparing amino acids including the controlled enhancement of expression of export-gene and/or activity of export-carrier of microorganism producing this amino acid that is displayed for the first time period. The enhanced expression and activity of export-carrier resulting from this method enhances the yield norm and therefore accelerates transport of desirable amino acid. EFFECT: improved preparing method, valuable biological properties of system. 30 cl, 4 dwg, 3 tbl, 1 ex _
