摘要:
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.
摘要翻译:提供能够合成乳酸聚合物(PLA)和乳酸共聚物(PLA共聚物)的各种聚羟基链烷酸酯(PHA)合成酶的突变体,以及使用其制备乳酸盐聚合物和乳酸共聚物的方法。 更具体地,提供了SEQ ID NO:2,4,6或8所示的聚羟基链烷酸酯合酶的突变体,以及使用合成酶突变体制备乳酸盐聚合物和乳酸共聚物的方法。 SEQ ID NO:2,4,6或8所示的聚羟基链烷酸酯合酶可以通过影响乳酸聚合物合成活性的氨基酸序列突变而具有乳酸聚合物和乳酸共聚物的合成活性, 乳酸聚合物和具有不同特征的共聚物,分别通过使用合成酶的突变体。
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
A multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing corneal dystrophy, and more particularly to a multi-spot metal-capped nanostructure array nucleic acid chip capable of employing LSPR (localized surface plasmon resonance) optical properties, a preparation method thereof, and a multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations, which can diagnose various corneal dystrophies. The metal-capped nanostructure array nucleic acid chip can be combined with analysis devices, including a light source, a detector, a spectrophotometer and a computer, to provide an LSPR optical property-based optical biosensor, and the use of the multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations allows the simultaneous diagnosis of various corneal dystrophies that are genetic ocular diseases.
摘要:
The present invention relates to a microorganism variant having the ability to produce hydrocarbons, including alkane, and a method of producing hydrocarbons, including alkane, using the same, and more particularly, to a microorganism variant obtained by introducing a gene encoding an enzyme converting fatty acyl-acp to free fatty acid, a gene encoding an enzyme converting free fatty acid to fatty acyl-CoA, a gene encoding an enzyme converting fatty acyl-CoA to fatty aldehyde and a gene encoding an enzyme converting fatty aldehyde to alkane into a microorganism improved so as to be suitable for the production of hydrocarbons, including alkane, and a method of producing hydrocarbons, including alkane, using the same. The microorganism variant of the present invention has high potential to be used to improve strains by additional metabolic flux engineering, and thus is useful for the industrial production of hydrocarbons, including alkane.
摘要:
The present invention relates to microbial variants producing homo-succinic acid at high yields and a method for producing homo-succinic acid using the same, more particularly, to a microbial variant constructed by disrupting a lactate dehydro-genase-encoding gene (idhA) and an acetate kinase-encoding gene (ackA), as well as a method for producing homo-succinic acid at high concentration, which comprises culturing such variants using glucose as a carbon source in anaerobic conditions.
摘要:
A multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing corneal dystrophy, and more particularly to a multi-spot metal-capped nanostructure array nucleic acid chip capable of employing LSPR (localized surface plasmon resonance) optical properties, a preparation method thereof, and a multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations, which can diagnose various corneal dystrophies. The metal-capped nanostructure array nucleic acid chip can be combined with analysis devices, including a light source, a detector, a spectrophotometer and a computer, to provide an LSPR optical property-based optical biosensor, and the use of the multi-spot metal-capped nanostructure array nucleic acid chip for diagnosing BIGH3 gene mutations allows the simultaneous diagnosis of various corneal dystrophies that are genetic ocular diseases.
摘要:
The present invention relates to recombinant microorganisms having an increased ability to produce butanol, and a method of producing butanol using the same. More specifically, the invention relates to recombinant microorganisms whose ability to produce butanol was increased by manipulation of their metabolic networks, and a method of producing butanol using the same. The recombinant microorganisms having an increased ability to produce butanol comprise a deletion of a gene, which encodes an enzyme that converts acetyl CoA to acetate, in host microorganisms having genes that encode enzymes involved in acetyl CoA and butyryl CoA biosynthetic pathway. The recombinant microorganisms obtained by manipulating the metabolic flux of microorganisms are able to selectively produce butanol with high efficiency, and thus are useful as microorganisms for producing industrial solvents and transportation fuels.