METHOD FOR THE IN VIVO SYNTHESIS OF 4-HYDROXYMETHYLFURFURAL AND DERIVATIVES THEREOF

    公开(公告)号:US20220298535A1

    公开(公告)日:2022-09-22

    申请号:US17750293

    申请日:2022-05-20

    申请人: Braskem S.A.

    摘要: The present disclosure provides recombinant microorganisms and methods for the production of 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA from a carbon source. The method provides for engineered microorganisms that express endogenous and/or exogenous nucleic acid molecules that catalyze the conversion of a carbon source into 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA. The disclosure further provides methods of producing polymers derived from 4-HMF, 2,4-furandimethanol, furan-2,4-dicarbaldehyde, 4-(hydroxymethyl)furoic acid, 2-formylfuran-4-carboxylate, 4-formylfuran-2-carboxylate, and/or 2,4-FDCA.

    METHOD FOR RESOLVING OPTICAL ISOMER BY MEANS OF ELECTRODIALYSIS TECHNIQUE

    公开(公告)号:US20220154240A1

    公开(公告)日:2022-05-19

    申请号:US17434418

    申请日:2020-02-26

    IPC分类号: C12P41/00 C12P17/04

    摘要: Disclosed is a method for resolving an optical isomer from a racemate by means of electrodialysis. Specifically, an electrodialysis technique is used in an enzymatic resolution process, mainly in the separation of products after enzymatic resolution. Taking a preparation process for D-pantolactone as an example, the key point is that D-pantoic acid and L-pantolactone are separated from an enzymatic resolution solution by means of an electrodialysis method, which replaces the existing organic solvent extraction method. The process method is simple and easy to operate, has a high yield of D-pantoic acid of a good purity, greatly reduces the usage amount of an organic solvent, reduces production costs and is environmentally friendly, such that the working environment of workers can be improved to a great extent, and the operation safety index is improved.

    Diels-Alderase and use thereof
    116.
    发明授权

    公开(公告)号:US11293015B2

    公开(公告)日:2022-04-05

    申请号:US16951916

    申请日:2020-11-18

    IPC分类号: C12N9/50 C12P7/26 C12P17/04

    摘要: The present invention provides a Diels-Alderase and use thereof, and belongs to the field of gene engineering technology. The Diels-Alderase is MaDA, and its amino acid sequence and gene sequence are represented by SEQ ID Nos. 1 and 2, respectively. The present invention also provides MaDA-1 and MaDA-2, both of which are homologous proteins of MaDA, and their amino acid sequences are represented by SEQ ID Nos. 10 and 12, respectively. The present invention has discovered that MaDA and its homologous proteins from Morus alba can stereospecifically synthesize natural products of endo configuration, and prepare D-A type natural products and their analogs in vitro using chalcones and dehydroprenyl-containing compounds as substrates, which helps to develop and utilize the medicinal value of such natural products, and also provides a possibility to synthesize other six-membered ring-containing important chemical precursors or natural products.

    METHOD FOR BIOCATALYTIC PRODUCTION OF TERPENE COMPOUNDS

    公开(公告)号:US20210222138A1

    公开(公告)日:2021-07-22

    申请号:US15734887

    申请日:2019-07-10

    申请人: FIRMENICH SA

    摘要: Provided herein are biocatalytic methods of producing terpene compounds by applying a novel type of phosphatase enzyme. The method allows the fully biochemical synthesis of terpene compounds, like for example copalol and labdendiol, and derivatives thereof, which serve as valuable intermediates for the production of perfumery ingredients, such as, for example, ambrox. Also provided are novel fully biochemical multistep processes for the production of such compounds as well as novel phosphatase enzymes and mutants and variants derived therefrom.

    METHODS OF PRODUCING 2,5-FURANDICARBOXYLIC ACID

    公开(公告)号:US20210180095A1

    公开(公告)日:2021-06-17

    申请号:US16762336

    申请日:2018-11-09

    申请人: SHELL OIL COMPANY

    IPC分类号: C12P17/04 C12N9/88

    摘要: Method for preparing a 2,5-furandicarboxylic acid (“FDCA”) comprising: contacting a polypeptide comprising an amino acid sequence that has greater than 34% sequence identity with an amino acid sequence set out in SEQ ID NO:1 or SEQ ID NO:2 with furoic acid in the presence of carbon dioxide; wherein the polypeptide has carboxylase and decarboxylase activity and comprises (i) the amino acid corresponding to H297 or a functional substitution thereof and (ii) at least one of (a) the amino acid corresponding to R305 or a functional substitution thereof; and (b) the amino acid corresponding to R332 or a functional substitution thereof; wherein the position is numbered relative to the amino acid sequence of SEQ ID NO:1 or SEQ ID NO:2.