Abstract: The present disclosure relates to a microorganism producing L-leucine and a method for producing L-leucine using the same, and more specifically, to a Corynebacterium glutamicum mutant which has resistance to L-leucine and a derivative thereof and improved L-leucine producing ability, and a method for producing L-leucine using the same.

Abstract: The present invention relates to a microorganism having an enhanced ability to produce L-isoleucine and a method of producing L-isoleucine using the same. More specifically, the present invention relates to a Corynebacterium glutamicum mutant strain, which is resistant to L-isoleucine and L-threonine derivatives and has an enhanced ability to produce L-isoleucine, and to a method of producing L-isoleucine using the mutant strain.

Abstract: The present disclosure relates to an acetohydroxy acid synthase variant in which the feedback inhibition to L-valine is released, a polynucleotide encoding the acetohydroxy acid synthase variant, an expression vector including the polynucleotide, a microorganism producing L-valine including the acetohydroxy acid synthase variant, and a method for producing L-valine using the microorganism.

Abstract: The present invention relates to a microorganism having an enhanced ability to produce L-isoleucine and a method of producing L-isoleucine using the same. More specifically, the present invention relates to a Corynebacterium glutamicum mutant strain, which is resistant to L-isoleucine and L-threonine derivatives and has an enhanced ability to produce L-isoleucine, and to a method of producing L-isoleucine using the mutant strain.

Abstract: The present invention relates to a novel L-valine-producing strain which is transformed so as to strengthen the expression of L-valine operon by having a nucleotide sequence, for coding a leader peptide in a regulatory region of ilvBN operon, entirely deleted, or partially deleted or substituted. In addition, the present invention relates to a method for producing L-valine using the novel L-valine-producing strain. According to the novel valine-producing strain and the L-valine production method of the present invention using the strain, there is an advantageous effect of producing L-valine at high efficiency and high yield.