摘要:
The present invention relates to processes for the enzymatic synthesis of nucleotide-6-deoxy-D-xylo-4-hexuloses starting from a nucleoside monophosphate (NMP). These processes comprise simultaneous incubation of the following substances in a buffer solution:(a) substrates comprising a nucleoside monophosphate, phosphoenolpyruvate, adenosine triphosphate, and sucrose; and(b) enzymes comprising pyruvate kinase, nucleoside-monophosphate kinase, sucrose synthase and deoxythymidine-D-glucose 4,6dehydratase.
摘要:
Secondary-metabolite biosynthesis genes from actinomycetes, method of isolating them, and their use.The invention concerns secondary-metabolite biosynthesis genes from actinomycetes, a method of isolating secondary-metabolite and, in particular, 6-deoxy-sugar biosynthesis genes, from actinomycetes using the gene probes strD, strE, strL and strM gene probes from Streptomyces griseus DSM40236, and structurally related genes, as gene probes for detecting the genes snoT (coding for amphotheronolide B-dTDP-D-mycosaminyl transferase), snoD (coding for dTDP-D-glucose synthase) and snoM (coding for dTDP-4-keto-6-deoxy-D-glucose isomerase), or one or more secondary-metabolite biosynthesis genes from actinomycetes. The invention also concerns the use of secondary-metabolite biosynthesis genes thus isolated.
摘要:
Secondary-metabolite biosynthesis genes from actinomycetes, method of isolating them, and their use. The invention concerns secondary-metabolite biosynthesis genes from actinomycetes, a method of isolating secondary-metabolite and, in particular, 6-deoxy-sugar bio-synthesis genes, from actinomycetes using the gene probes strD, strE, strL and strM gene probes from Streptomyces griseus DSM40236, and structurally related genes, as gene probes for detecting the genes snot (coding for amphotheronolide B-dTDP-D-mycosaminyl transferase), snoD (coding for dTDP-D-glucose synthase) and snoM (coding for dTDP-4-keto-6-deoxy-D-glucose isomerase), or one or more secondary-metabolite biosynthesis genes from actinomycetes. The invention also concerns the use of secondary-metabolite biosynthesis genes thus isolated.
摘要:
The invention relates to acarviosyl transferase from actinomycetes, mainly from Actinoplanes sp. SE 50/110 and its mutants, to a process for isolating, purifying and characterizing the enzyme, to the isolation and characterization of the acbD gene encoding the acarviosyl transferase, to the expression of the acarviosyl transferase in a heterologous host organism, to the use of the acarviosyl transferase for converting acarbose minor constituents into acarbose or for preparing acarbose homologues, to the use of the acarviosyl transferase in acarbose purification, and also to the preparation of production mutants in which formation of minor constituents is reduced by means of inactivation of the acarviosyl transferase gene.
摘要翻译:本发明涉及来自放线菌的主要来自Actinoplanes sp。的acarviosyl转移酶。 SE 50/110及其突变体,用于分离,纯化和表征酶的过程,分离和表征编码α-乙酰氧基转移酶的acbD基因到异源宿主生物体中的阿卡非糖转移酶的表达,使用 的阿卡波糖转移酶用于将阿卡波糖次要成分转化成阿卡波糖或用于制备阿卡波糖同系物,以及在阿卡波糖纯化中使用阿卡波糖转移酶,以及制备生产突变体,其中通过灭活 阿维生素转移酶基因。
摘要:
The invention relates to acarbose biosynthesis genes from actinomycetes, predominantly from Actinoplanes sp. SE 50/110 and its mutants, to a process for the isolation of acarbose biosynthesis genes from actinomycetes using a gene probe which has been derived from highly conserved protein regions of known dTDP-glucose dehydratase enzymes for finding the genes acbA (coding for dTDP-glucose synthase), acbB (coding for dTDP-glucose dehydratase) and acbC (coding for a cyclase, in part identical to AroB, bacterial 3-dehydroquinate synthases) or one or more acarbose biosynthesis genes from Actinoplanes sp., and to the use of the acarbose biosynthesis genes.
摘要翻译:本发明涉及来自放线菌的阿卡波糖生物合成基因,主要来自Actinoplanes sp。 SE 50/110及其突变体,使用从已知dTDP-葡萄糖脱水酶的高度保守的蛋白质区域衍生的基因探针从放线菌分离阿卡波糖生物合成基因的方法,用于寻找基因acbA(编码dTDP- 葡萄糖合成酶),acbB(编码dTDP-葡萄糖脱水酶)和acbC(编码环化酶,部分与AroB相同,细菌3-脱氢秋水仙碱合酶)或来自Actinoplanes sp。的一种或多种阿卡波糖生物合成基因,以及使用 阿卡波糖生物合成基因。
摘要:
The invention concerns a process for the production of recombinant proteins in streptomycetes in which the expression is carried out in Streptomyces galbus DSM 40480, preferably under the control of the ermE-up promoter or an inducible promoter.