Abstract: Provided are a recombinant microorganisms having a genetic modification that increases the expression of bacterioferritin, a composition comprising the recombinant microorganism for use in reducing a nitrogen oxide concentration in a sample, and a method of reducing a nitrogen oxide concentration in a sample.

Abstract: A method of reducing a concentration of a nitrogen oxide, the method comprising: contacting a microorganism with a nitrogen oxide-containing sample to reduce the concentration of the nitrogen oxide in the sample, wherein the contacting comprises contacting the microorganism with Fe(II)(L)-NOx in a bioreactor, wherein the Fe(II)(L)-NOx is a complex in which a chelating agent, Fe2+, and NOx are chelated, wherein L is the chelating agent, and wherein NOx is a nitrogen oxide ligand.

Abstract: Provided are polynucleotides encoding variants of nitrous oxide reductase proteins, recombinant microorganisms including a foreign gene encoding a variant of a nitrous oxide reductase protein, and a composition comprising the recombinant microorganism or the variant of a nitrous oxide reductase protein for use in removing nitrous oxide in a sample.

Abstract: An isolated polynucleotide including a promoter region derived from a bacterium of the genus Paracoccus, a recombinant host cell including the isolated polynucleotide, and a method of expressing a target gene by culturing a recombinant host cell comprising a polynucleotide comprising the promoter region and a target gene operably linked to the promoter region, under conditions in which the target gene is expressed.

Abstract: A recombinant microorganism including a genetic modification that increases expression of a gene encoding a ferric enterobactin transporter-associated protein or a gene encoding a TonB-dependent transporter-associated protein, or a genetic modification that decreases expression of a fur gene encoding a ferric uptake regulator (Fur) protein, wherein the recombinant microorganism removes greater amounts of nitric oxide from a sample comprising nitric oxide than a same microorganism without the genetic modification

Abstract: Provided are recombinant microorganisms having a foreign gene encoding a variant of a nitrous oxide reductase protein, a composition comprising the recombinant microorganism or the variant of a nitrous oxide reductase protein for use in removing nitrous oxide in a sample, a variant of a nitrous oxide reductase protein, and a polynucleotide encoding the variant.

Abstract: A recombinant microorganism of the genus Escherichia, comprises a genetic modification that increases expression of a nosZ gene encoding NosZ, which is a nitrous oxide reductase, in the recombinant microorganism, wherein the recombinant microorganism comprises a nosR gene encoding NosR, a nosD gene encoding NosD, a nosF gene encoding NosF, a nosY gene encoding NosY, and an apbE gene encoding ApbE, and wherein the nosR gene, the nosD gene, the nosF gene, the nosY gene and the apbE gene are derived from a microorganism of the genus Pseudomonas, the genus Paracoccus, or a combination thereof.

Abstract: A recombinant microorganism including a genetic modification that increases activity of nitric oxide reductase in the recombinant microorganism, a composition for reducing a concentration of nitric oxide in a sample, the composition including the recombinant microorganism, and a method of reducing a concentration of nitric oxide in a sample, are disclosed.

Abstract: A method of reducing a concentration of N2O, NO, or a combination thereof in a medium, the method comprising: culturing a microorganism of the genus Paracoccus, a microorganism of the genus Pseudomonas, or a combination thereof in a liquid medium comprising Mg2+ ions and Fe(II)(L)-NO, N2O, or a combination thereof, wherein L is a chelating agent; and reducing NO to N2O or N2, or reducing N2O to N2.

Abstract: An isolated polynucleotide including a promoter region derived from a bacterium of the genus Paracoccus, a recombinant host cell including the isolated polynucleotide, and a method of expressing a target gene by culturing a recombinant host cell comprising a polynucleotide comprising the promoter region and a target gene operably linked to the promoter region, under conditions in which the target gene is expressed.

Abstract: The present invention relates to cells or plants that can produce polylactate or its copolymers and to a method for preparing polylactate or its copolymers using the same. More specifically, cells or plants with the ability to produce polylactate or hydroxyalkanoate-lactate copolymers comprise both a gene encoding an enzyme that converts lactate into lactyl-CoA and a gene encoding polyhydroxyalkanoate (PHA) synthase which uses lactyl-CoA as a substrate. Also described is a method for preparing polylactate or hydroxyalkanoate-lactate copolymers which comprises culturing the cells in a medium containing lactate or lactate and various hydroxyalkanoates or culturing the plants. Effective preparation of hydroxyalkanoate-lactate copolymer which comprises various hydroxyalkanoates as well as polylactate, using the cells or the plants, is disclosed.

Abstract: Provided is a method of preparing polylactate (PLA) or a copolymer thereof using a mutant microorganism in which a gene participating in a coenzyme A (CoA) donor- and lactate-producing pathway is genetically manipulated to increase the productivity of a CoA donor and lactate. Amounts of the CoA donor and the lactate are simultaneously increased in a microbial metabolic pathway to enable effective biosynthesis of PLA and a hydroxyalkanoate-lactate copolymer having a high content of lactate, which is industrially useful.

Abstract: A mutant butyraldehyde dehydrogenase (Bld), a polynucleotide having a nucleotide encoding the mutant, a vector including the polynucleotide, a microorganism including a nucleotide encoding the mutant, and a method of producing 1,4-butanediol using the same.

Abstract: There is provided a recombinant microorganism having producibility of poly(lactate-co-glycolate) from glucose, and more particularly, a recombinant microorganism having producibility of poly(lactate-co-glycolate) without adding an exogenous glycolate precursor, and a method of preparing [poly(preparing lactate-co-glycolate)] using the same. According to the present invention, the poly(lactate-co-glycolate) in which the concentration of the glycolate fraction is high may be prepared at a high concentration without supplying exogenous glyoxylate. Therefore, the present invention may be effectively used for treatment.

Abstract: There is provided a recombinant microorganism having producibility of poly(lactate-co-glycolate) from glucose, and more particularly, a recombinant microorganism having producibility of poly(lactate-co-glycolate) without adding an exogenous glycolate precursor, and a method of preparing [poly(preparing lactate-co-glycolate)] using the same. According to the present invention, the poly(lactate-co-glycolate) in which the concentration of the glycolate fraction is high may be prepared at a high concentration without supplying exogenous glyoxylate. Therefore, the present invention may be effectively used for treatment.

Abstract: Mutants of various polyhydroxyalkanoate (PHA) synthases capable of synthesizing a lactate polymer (PLA) and a lactate copolymer (PLA copolymer), and a method of preparing a lactate polymer and a lactate copolymer using the same are provided. More specifically, a mutant of polyhydroxyalkanoate synthase set forth in SEQ ID NO: 2, 4, 6, or 8, and a method of preparing lactate polymer and lactate copolymer using the mutant of synthase are provided. The polyhydroxyalkanoate synthase set forth in SEQ ID NO: 2, 4, 6, or 8 can have an activity of synthesizing a lactate polymer and a lactate copolymer by an amino acid sequence mutation affecting an activity of synthesizing a lactate polymer, and can produce a lactate polymer and a copolymer that have different features, respectively, by using the mutants of the synthase.

Abstract: Provided is a method of preparing polylactate (PLA) or a copolymer thereof using a mutant microorganism in which a gene participating in a coenzyme A (CoA) donor- and lactate-producing pathway is genetically manipulated to increase the productivity of a CoA donor and lactate. Amounts of the CoA donor and the lactate are simultaneously increased in a microbial metabolic pathway to enable effective biosynthesis of PLA and a hydroxyalkanoate-lactate copolymer having a high content of lactate, which is industrially useful.

Abstract: The present invention relates to cells or plants that can produce polylactate or its copolymers and to a method for preparing polylactate or its copolymers using the same. More specifically, cells or plants with the ability to produce polylactate or hydroxyalkanoate-lactate copolymers comprise both a gene encoding an enzyme that converts lactate into lactyl-CoA and a gene encoding polyhydroxyalkanoate (PHA) synthase which uses lactyl-CoA as a substrate. Also described is a method for preparing polylactate or hydroxyalkanoate-lactate copolymers which comprises culturing the cells in a medium containing lactate or lactate and various hydroxyalkanoates or culturing the plants. Effective preparation of hydroxyalkanoate-lactate copolymer which comprises various hydroxyalkanoates as well as polylactate, using the cells or the plants, is disclosed.