A novel branched-chain amino acid aminotransferase variant and a method for producing leucine using the same.

A novel branched-chain amino acid aminotransferase variant and a method for producing leucine using the same.

The invention relates to a method for the preparation of a 4,5-dihydroxyisoleucine derivative comprising the steps of asymmetric Claisen rearrangement of a Z-aminocrotyl-glycin ester and subsequent kinetic resolution of the product diastereomer mix by acylase, and subsequent Sharpless dihydroxylation of the resulting 2-amino-3-methylpent-4-enoic acid derivative.

The present application relates to recombinant microorganisms useful in the biosynthesis of monoethylene glycol (MEG) or glycolic acid (GA), or MEG and one or more co-product, from one or more pentose and/or hexose sugars. Also provided are methods of producing MEG (or GA), or MEG (or GA) and one or more co-product, from one or more pentose and/or hexose sugars using the recombinant microorganisms, as well as compositions comprising the recombinant microorganisms and/or the products MEG (or GA), or MEG and one or more co-product.

The present disclosure relates to a modified polypeptide with attenuated activity of citrate synthase and a method for producing an aspartate-derived L-amino acid using the modified polypeptide.

The present disclosure relates to a modified polypeptide with attenuated activity of citrate synthase and a method for producing an aspartate-derived L-amino acid using the modified polypeptide.

Use of a stereoselective transaminase in the asymmetric synthesis of a chiral amine. In particular, provided is use of a polypeptide in the production of a chiral amine or a downstream product using a chiral amine as a precursor. Further provided is a method for producing a chiral amine, comprising culturing a strain expressing the polypeptide so as to obtain a chiral amine. Further provided are a chiral amine production strain and a method for constructing the chiral amine production strain. The stereoselective transaminase has a broad substrate spectrum and thus has a broad application potential in the preparation of a chiral amine.

Use of a stereoselective transaminase in the asymmetric synthesis of a chiral amine. In particular, provided is use of a polypeptide in the production of a chiral amine or a downstream product using a chiral amine as a precursor. Further provided is a method for producing a chiral amine, comprising culturing a strain expressing the polypeptide so as to obtain a chiral amine. Further provided are a chiral amine production strain and a method for constructing the chiral amine production strain. The stereoselective transaminase has a broad substrate spectrum and thus has a broad application potential in the preparation of a chiral amine.

The present disclosure relates to a modified polypeptide with attenuated activity of citrate synthase and a method for producing an aspartate-derived L-amino acid using the modified polypeptide.

The present disclosure relates to a modified polypeptide with attenuated activity of citrate synthase and a method for producing an aspartate-derived L-amino acid using the modified polypeptide.