A process for producing alanine, including culturing a cell under aerobic conditions in an aqueous phase in the presence of an inorganic nitrogen source, and then contacting the aqueous phase and the cell cultured in the aqueous phase with a hydrophobic organic phase. The cell is a prokaryotic or a lower eukaryotic cell and expresses a recombinant alanine dehydrogenase.

A process for producing alanine, including culturing a cell under aerobic conditions in an aqueous phase in the presence of an inorganic nitrogen source, and then contacting the aqueous phase and the cell cultured in the aqueous phase with a hydrophobic organic phase. The cell is a prokaryotic or a lower eukaryotic cell and expresses a recombinant alanine dehydrogenase.

The present disclosure relates to a novel acetohydroxy acid synthase, a microorganism comprising the same, or a method for producing an L-branched-chain amino acid using the same.

The present disclosure relates to a novel acetohydroxy acid synthase, a microorganism comprising the same, or a method for producing an L-branched-chain amino acid using the same.

The present invention relates to an RhtB (homoserine/homoserine lactone export transporter) protein variant having an enhanced ability to export O-phosphoserine (OPS) that is a precursor of L-cysteine, a polynucleotide encoding the protein, a vector comprising the polynucleotide, an OPS-producing microorganism comprising the protein variant, a method of producing O-phosphoserine using the microorganism, and a method for preparing cysteine or its derivatives, which comprises reacting O-phosphoserine, produced by the method above, with a sulfide in the presence of O-phosphoserine sulfhydrylase (OPSS) or a microorganism that expresses OPSS.

The present invention relates to an RhtB (homoserine/homoserine lactone export transporter) protein variant having an enhanced ability to export O-phosphoserine (OPS) that is a precursor of L-cysteine, a polynucleotide encoding the protein, a vector comprising the polynucleotide, an OPS-producing microorganism comprising the protein variant, a method of producing O-phosphoserine using the microorganism, and a method for preparing cysteine or its derivatives, which comprises reacting O-phosphoserine, produced by the method above, with a sulfide in the presence of O-phosphoserine sulfhydrylase (OPSS) or a microorganism that expresses OPSS.

The present invention relates to a microorganism, wherein the activity of a polypeptide capable of exporting O-phosphoserine (OPS) is enhanced, and a method of producing O-phosphoserine, cysteine, or a cysteine derivative using the microorganism.

The present invention relates to a microorganism, wherein the activity of a polypeptide capable of exporting O-phosphoserine (OPS) is enhanced, and a method of producing O-phosphoserine, cysteine, or a cysteine derivative using the microorganism.

The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.

The present disclosure relates to modified homoserine dehydrogenase and a method for producing a homoserine-derived L-amino acid using the same.