摘要:
A compound derived from the culture product of an actinomycete and having an antitumor activity is provided. Provided is a compound represented by any one of formulas (I), (II) and (III)or an optical isomer thereof or a pharmaceutically acceptable salt thereof which can be isolated from the culture fluid of an actinomycete which belongs to the genus Streptomyces, wherein R1, R2, R5 and R6 each independently represent a hydrogen atom, a methyl group, a hydroxymethyl group, a hydroxyl group, or a double bond by which R1 and R2 or R5 and R6 are bonded; R3, R4, R7 and R8 each independently represent a methyl group or a hydroxymethyl group; and R9 represents a hydrogen atom or a hydroxyl group.
摘要翻译:提供了源自放线菌培养物并具有抗肿瘤活性的化合物。 提供可以从属于链霉菌属的放线菌的培养液中分离的由式(I),(II)和(III)中的任何一种表示的化合物或其旋光异构体或其药学上可接受的盐, 其中R1,R2,R5和R6各自独立地表示氢原子,甲基,羟甲基,羟基或R1和R2或R5和R6键合的双键; R 3,R 4,R 7和R 8各自独立地表示甲基或羟甲基; 并且R 9表示氢原子或羟基。
摘要:
Enzymes for producing non-straight-chain fatty acids, microorganisms comprising the enzymes, and in vivo and in vitro uses of the enzymes. Provided are enzymes capable of producing various non-straight-chain fatty acids, including branched-chain fatty acids, cyclic fatty acids, and furan-containing fatty acids. The enzymes include RSP2144, RSP1091, and RSP1090 from Rhodobacter sphaeroides and homologs thereof. The enzymes can be purified to produce non-straight-chain fatty acids in vitro or expressed in microorganisms to produce non-straight-chain fatty acids in vivo. The microorganisms can be fine-tuned to produce a specific type of non-straight-chain fatty acid by expressing, overexpressing, or deleting the enzymes in various combinations.
摘要:
The invention pertains to the field of production of natural products and, in particular, in the field of production of cornexistin and hydroxycornexistin. It provides polynucleotides encoding polypeptides involved in the biosynthesis of cornexistin and hydroxycornexistin as well as vectors and recombinant microorganisms comprising such polynucleotides. Also provided are methods for the production of natural products, in particular methods for the production of cornexistin and hydroxycornexistin, using such polynucleotides and polpeptides encoded therein, as well as vectors and recombinant microorganisms comprising such polynucleotides and polypeptides.
摘要:
The invention provides a non-naturally occurring microbial biocatalyst including a microbial organism having a 4-hydroxybutanoic acid (4-HB) biosynthetic pathway having at least one exogenous nucleic acid encoding 4-hydroxybutanoate dehydrogenase, succinyl-CoA synthetase, CoA-dependent succinic semialdehyde dehydrogenase, or α-ketoglutarate decarboxylase, wherein the exogenous nucleic acid is expressed in sufficient amounts to produce monomeric 4-hydroxybutanoic acid (4-HB). Also provided is a non-naturally occurring microbial biocatalyst including a microbial organism having 4-hydroxybutanoic acid (4-HB) and 1,4-butanediol (BDO) biosynthetic pathways, the pathways include at least one exogenous nucleic acid encoding 4-hydroxybutanoate dehydrogenase, succinyl-CoA synthetase, CoA-dependent succinic semialdehyde dehydrogenase, 4-hydroxybutyrate:CoA transferase, 4-butyrate kinase, phosphotransbutyrylase, α-ketoglutarate decarboxylase, aldehyde dehydrogenase, alcohol dehydrogenase or an aldehyde/alcohol dehydrogenase, wherein the exogenous nucleic acid is expressed in sufficient amounts to produce 1,4-butanediol (BDO). Additionally provided are methods for the production of 4-HB and BDO.
摘要:
The invention relates to recombinant cells and their use in the production of 3,4-dihydroxybutyrate, 2,3-dihydroxybutyrate and 3-hydroxybutyrolactone.
摘要:
The present invention relates to the field of biotransformation of furanic compounds. More particular the present invention relates to novel genetically modified cells with improved characteristics for biocatalytic transformation of furanic compounds and a vector suitable for the genetic modification of a host cell. Further aspects of the invention are aimed at processes for biotransformation of 5-(hydroxymethyl)furan-2-carboxylic acid (HMF-acid) and its precursors with the use of the cell according to the invention.
摘要:
The present invention discloses an isolated polynucleotide molecule derived from a polynucleotide encoding a polypeptide having L-sorbosone dehydrogenase activity comprising a partial nucleotide sequence of at least 20 consecutive nucleotides of SEQ ID NO:1. The present invention further relates to a process for the production of L-ascorbic acid in high yield, in particular a process using resting cells of a microorganism able to convert given carbon sources into vitamin C. The thus obtained vitamin C may be further processed by purification and/or separation steps.
摘要翻译:本发明公开了衍生自编码具有L-山梨糖酮脱氢酶活性的多肽的多核苷酸的分离的多核苷酸分子,其包含SEQ ID NO:1的至少20个连续核苷酸的部分核苷酸序列。 本发明还涉及以高产率生产L-抗坏血酸的方法,特别是使用能够将给定碳源转化成维生素C的微生物的静息细胞的方法。由此获得的维生素C可以进一步由 纯化和/或分离步骤。
摘要:
The present invention provides an enzyme having an activity of transferring a methyl group to lignans (a lignan methylation activity) (e.g., a protein comprising the amino acid sequence of SEQ ID NO:2 or variants thereof); a gene encoding the enzyme (e.g., a polynucleotide comprising the nucleotide sequence of SEQ ID NO:1 or variants thereof); a method for producing methylated lignans using the gene; and so on.
摘要翻译:本发明提供了具有将甲基转移到木脂体(木质素甲基化活性)(例如包含SEQ ID NO:2的氨基酸序列的蛋白质或其变体)的活性的酶)。 编码该酶的基因(例如,包含SEQ ID NO:1的核苷酸序列的多核苷酸或其变体); 使用该基因生产甲基化木脂素的方法; 等等。