摘要:
A process for preparing a compound of formula (II) wherein R1 denotes bromine, wherein, a compound of formula (IV) is reacted with elemental bromine in a diluent.
摘要:
The invention relates to a process for preparing a compound of formula (I) wherein a compound of formula (II), wherein R1 denotes chlorine, bromine, iodine, —O—COCH3, tosylate or mesylate, is reacted with a compound of formula (III), optionally in a suitable diluent and/or in the presence of a suitable added reagent or catalyst, the reaction being carried out in a temperature range from 20 to 80° C.
摘要:
A method locating insertion elements (IS elements) or transposons in coryneform bacteria, a positive selection system suitable for the above, the IS elements found in this manner and their use, is disclosed. The method involves:(1) The construction of a non-self-transferrable vector mobilizable from an E. coli mobilizer strain which vector is composed of(a) A DNA segment containing a replicon functional in E. coli,(b) A second DNA segment containing the DNA fragment coding for the mobilization function (Mob site containing the oriT),(c) A third DNA segment which recombines homologously in Gram-positive bacteria and/or contains a replicon functional in coryneform bacteria,(d) A DNA segment from Bacillus subtilis containing the sacB gens,(2) Transfer of this vector by means of conjugative transfer into the coryneform recipient strains,(3) Cultivation of the transconjugants containing the vector in an .about.10% sucrose-containing nutrient medium,(4) Lysis of the sucrose-resistant clones, cleaving of the plasmids with restriction endonucleases and analysis of the fragments.
摘要:
The invention relates to a promoter screening vector, to methods for the identification and isolation of Streptomyces promoters using the screening vector, and to the isolated promoters themselves, preferably the pS1 and P14 (SEQ2ID NO: 1) promoters of the S. ghanaensis phase I19.
摘要翻译:本发明涉及启动子筛选载体,使用筛选载体鉴定和分离链霉菌启动子的方法,以及分离的启动子本身,优选加拿大第一相I19的pS1和P14(SEQ ID NO:1)启动子 。
摘要:
The invention relates to a process halogenation, which comprises halogenating a chemical compound in the presence of a halogenase, where the halogenase is (a) encoded by the sequence specified in SEQ ID NO: 1 or a sequence derived therefrom on the basis of the degeneracy of the genetic code, or is (b) encoded by a nucleic acid sequence which codes for a functional fragment of (a) or (c) by a sequence which hybridizes with (a) or (b) under standard conditions, or is (d) encoded by a sequence which has more than 30% identity or more than 60% similarity with the sequence specified under (a).
摘要翻译:本发明涉及一种方法卤化,其包括在卤化酶存在下卤化化合物,其中所述卤化酶是(a)由SEQ ID NO:1中规定的序列编码的或其衍生的序列,基于简并性 或(b)由核酸序列编码,其通过在标准条件下与(a)或(b)杂交的序列编码(a)或(c)的功能性片段,或者是( d)由与(a)中指定的序列具有超过30%同一性或大于60%相似性的序列编码。
摘要:
The kil-kor system from the plasmid pIJ101 can be utilized for regulated gene expression in Streptomycetes. For this, the KorA protein is either inactivated or eliminated to "switch on" a particular gene.
摘要:
Starting from the Streptomycetes plasmids pSG2, pSG5 and pSVH1, "shuttle vectors" which, in additon to a E. coli replicon, also contain suitable selection markers for E. coli and Streptomycetes are constructed. These shuttle vectors replicate both in E. coli and in Streptomycetes, and they can be used for cloning and expression of foreign DNA.
摘要:
S. ghanaensis DSM 2932 is resistant to gentamicin at up to 20 .mu.g/ml. Total digestion of the genomic DNA with BglII, incorporation of the restriction fragments into a suitable plasmid, and selection using gentamicin results in gentamicin-resistant clones which contain a 7 kb fragment with the gentamicin-resistance gene. The plasmid pPH1JI likewise contains a gentamicin-resistance gene located on a 2.3 kb HindIII-BamHI fragment. These genes are suitable as markers, in particular for Streptomycetes vectors.
摘要:
The plasmid pSG5 which, because of its molecular length of about 12.7 kb and its four unique restriction sites, can be used for the construction of plasmid vectors for Streptomycetes, for example of shuttle vectors between Streptomycetes and other microorganisms, can be isolated from a culture of Streptomyces ghanaensis DSM 2932.
摘要:
The invention relates to deacetylase genes, to processes for their isolation, and to their use, in particular for the production of transgenic plants using tissue-specific promoters. It is possible to prevent the development of certain parts in these plants in a targeted manner. With the aid of deacetylase genes, it is furthermore possible to identify and isolate tissue-specific promoters in transgenic plants.