摘要:
A variety of methods and systems for screening biocatalysts are disclosed, including, in one embodiment, a screening method for identifying engineered biocatalysts, including reacting an olefin with water in the presence of an engineered biocatalyst to produce at least a fatty alcohol having from 4 carbons to 24 carbons; reacting at least a portion of the fatty alcohol with oxygen in the present of a fatty alcohol oxidase to produce a fatty aldehyde and hydrogen peroxide, the fatty aldehyde having from 4 carbons to 24 carbons; and measuring activity of the engineered biocatalyst.
摘要:
The present invention relates to the field of microbial production of novel biosurfactants. More specifically, the present invention discloses the usage of a fungal strain such as the yeast Starmerella bombicola having a dysfunctional CYP52M1 cytochrome P450 monooxygenase and a dysfunctional FAO1 fatty alcohol oxidase for producing high amounts of so-called “symmetrical bolaform sophorosides” where both sophorose moieties are attached through a terminal glycosidic linkage to the hydrophobic linker. In addition, the present invention further discloses that the latter yeast can also be used to produce alkyl sophorosides and symmetrical bolaform glucosides.
摘要:
The present invention relates to the field of production of novel biosurfactants. More specifically, the present invention relates to the efficient generation of short chained on-glycosides with less than 10%, preferably less than 1%, ω-1 glycosides using a fungal strain such as the yeast Starmerella bombicola having a dysfunctional CYP52M1 cytochrome P450 monooxygenase and a dysfunctional FAO1 fatty alcohol oxidase to produce high amounts of so-called unsaturated (symmetrical) α,ω-bola glycosides free from contaminating α,ω-1 bola glycosides, and subjecting said unsaturated (symmetrical) α,ω-bola glycosides to conditions inducing the breaking of the present double bond(s) such as for example through ozonolysis performed in water. More specifically, the present invention discloses the generation of (acetylated) C9:0 ω-sophoroside aldehydes, C9:0 ω-glucoside aldehydes, C9:0 ω-glucolipids, C9:0 ω-sophorolipids, C9:0 ω-sophoroside alcohols and C9:0 ω-glucoside alcohols and their further derivatives. The present invention also discloses methods to produce alkyl sophorosides in increased ratios.
摘要:
A sensor implanted in tissues and including a sensing layer is fabricated by mixing the signal transduction enzyme with non-reactive components including buffer salts and fillers, and spin coating the enzyme onto a substrate. The signal transduction enzyme is crosslinked by introducing the coated substrate in a vacuum chamber. In the chamber, a crosslinker evaporates and is deposited onto the enzyme, therefore crosslinking the enzyme.
摘要:
The invention relates to various new yeast strains of the type Yarrowia lipolytica as well as relevant methods for the biocatalytic preparation of ω-hydroxy fatty acids or dicarboxylic acids with the aid of these strains, whereby the formation of ω-hydroxy fatty acids or dicarboxylic acids is advantageously increased.
摘要:
A sensor implanted in tissues and including a sensing layer is fabricated by mixing the signal transduction enzyme with non-reactive components including buffer salts and fillers, and spin coating the enzyme onto a substrate. The signal transduction enzyme is crosslinked by introducing the coated substrate in a vacuum chamber. In the chamber, a crosslinker evaporates and is deposited onto the enzyme, therefore crosslinking the enzyme.
摘要:
A gene editing system of Candida viswanathii includes a Candida viswanathii, a first gene editing fragment and a second gene editing fragment. The first gene editing fragment successively includes a first homology arm and a screening gene. The second gene editing fragment is connected to a C-terminus of the first gene editing fragment and includes a second homology arm, a Cas9 expression cassette and a sgRNA cassette. The Cas9 expression cassette successively includes a Cas9 promoter, a Cas9 gene and three nuclear localization sequences. The sgRNA cassette successively includes a sgRNA promoter, a first ribozyme, a targeting sequence, a scaffold and a second ribozyme. The first gene editing fragment and the second gene editing fragment are constructed as a linear fragment for gene editing of a chromosome of the Candida viswanathii.
摘要:
A sensor implanted in tissues and including a sensing layer is fabricated by mixing the signal transduction enzyme with non-reactive components including buffer salts and fillers, and spin coating the enzyme onto a substrate. The signal transduction enzyme is crosslinked by introducing the coated substrate in a vacuum chamber. In the chamber, a crosslinker evaporates and is deposited onto the enzyme, therefore crosslinking the enzyme.
摘要:
A sensor implanted in tissues and including a sensing layer is fabricated by mixing the signal transduction enzyme with non-reactive components including buffer salts and fillers, and spin coating the enzyme onto a substrate. The signal transduction enzyme is crosslinked by introducing the coated substrate in a vacuum chamber. In the chamber, a crosslinker evaporates and is deposited onto the enzyme, therefore crosslinking the enzyme.
摘要:
There is provided a microbial cell for producing at least one omega-functionalized carboxylic acid ester from at least one alkane, wherein the cell is genetically modified to increase the expression relative to the wild type cell of (i) Enzyme E1 capable of converting the alkane to the corresponding 1-alkanol; (ii) Enzyme E2 capable of converting the 1-alkanol of (i) to the corresponding 1-alkanal; (iii) Enzyme E3 capable of converting the 1-alkanal of (ii) to the corresponding alkanoic acid; (iv) Enzyme E4 capable of converting the alkanoic acid of (iii) to the corresponding alkanoic acid ester; and (iv) Enzyme E5 capable of converting the alkanoic acid ester of (iv) to the corresponding omega-hydroxy-alkanoic acid ester, and wherein the cell does not comprise a genetic modification that increases the expression relative to the wild type cell of at least one of the following enzymes E20-E24 selected from the group consisting of: E20 Acyl-ACP thioesterase, of EC 3.1.2.14 or EC 3.1.2.22, E21 Acyl-CoA thioesterase, of EC 3.1.2.2, EC 3.1.2.18, EC 3.1.2.19, EC 3.1.2.20 or EC 3.1.2.22, E22 Acyl-CoA:ACP transacylase, E23 Polyketide synthase, and E24 Hexanoic acid synthase