摘要:
A bacteriophage which is characterized by the presence of one or more restriction enzyme sites downstream from the late promoter up to the cohesive end, and none or a permissible number of restriction enzyme sites upstream from the late promoter to the cohesive end is useful as an expression vector. The vector can be used to obtain high expression of DNA inserted at the restriction enzyme site downstream from the late promoter up to the cohesive end.
摘要:
A method for preparing a novel recombinant DNA, which comprises (1) cleaving with an endonuclease a phage DNA having an endonuclease-sensitive region not in the DNA segment participating in temperate phage DNA replication and integration of DNA into a host chromosome but in other DNA segments, a temperate phage DNA having an endonuclease-sensitive region in the DNA segment carrying genetic information for the production of coat protein, and a DNA carrying the intended genetic information, (2) mixing together all fragments produced by said cleaving, (3) adding DNA ligase to the mixture, and (4) recovering from the resulting mixture a phage DNA having its coat protein producing ability deleted by the replacement of the DNA segment carrying genetic information for coat protein production with a DNA fragment carrying the intended genetic information.
摘要:
The present invention relates to variant E.sub.1 protein of pyruvate dehydrogenase complex of high activity in which arginine at the 146-position is replaced by proline in the amino acid sequence of wild-type E.sub.1 protein of pyruvate dehydrogenase complex, a gene coding for said variant E.sub.1 protein, a novel recombinant DNA comprising said variant E.sub.1 protein-encoding gene inserted in a vector DNA, and a process for producing variant E.sub.1 protein by said recombinant DNA. The present invention provides the variant E.sub.1 protein of pyruvate dehydrogenase complex of high activity.
摘要:
The present invention provides a method of controlling an electrocoating bath using an ion exchange resin. The ion exchange resin is maintained in a porous container in a suspended state in the electrocoating bath, and is used in a quantity of not more than the chemical equivalent of excess counter-ion to be removed from the bath. Bath control is easily achieved without any coagulation trouble as often observed in conventional column methods.
摘要:
The present invention relates to a DNA fragment of 3,563 base pairs containing a gene coding for tannase and derived from a microorganism belonging to the genus Aspergillus, with the following restriction enzyme map: ##STR1## B: Bam HI, H: Hind III, K: Kpn I, S: Sal I, X: Xba I; a DNA fragment containing a tannase gene coding for the amino acid sequence of (SEQ ID NO:4); a recombinant plasmid comprising the DNA fragment containing the tannase gene inserted into a plasmid vector; a process for producing tannase, comprising culturing a microorganism belonging to the genus Aspergillus capable of producing tannase in medium with the recombinant plasmid, and recovering tannase from the culture; and a promoter represented by the nucleotide sequence of (SEQ ID NO:1). Tannase can be efficiently produced according to the present invention.
摘要翻译:本发明涉及含有编码鞣酸酶的基因并衍生自属于曲霉属的微生物的3,563个碱基对的DNA片段,其具有以下限制酶图:B:Bam HI,H:Hind III,K :Kpn I,S:Sal I,X:Xba I; 含有编码(SEQ ID NO:4)的氨基酸序列的鞣酸酶基因的DNA片段; 包含插入质粒载体中的含有鞣酸酶基因的DNA片段的重组质粒; 一种鞣酸酶的制造方法,其特征在于,在培养基中培养能够在培养基中生产鞣酸酶的微生物属于属于曲霉属的微生物,从培养物中回收鞣酸酶; 和由(SEQ ID NO:1)的核苷酸序列表示的启动子。 根据本发明可以有效地制备鞣酸酶。
摘要:
A method for the pretreatment of a long cloth continuously in which a cloth to be subjected to desizing, scouring and bleaching for the pretreatment thereof is preliminarily subjected to souring treatment in the sodium chlorite solution prepared by absorbing the chlorine dioxide gas, which is exhausted from the subsequent bleaching process with the use of chlorite, in a solution of H.sub.2 O.sub.2 and NaOH, and accordingly it is possible to transport the long cloth continuously in the pretreating process speedily with no need of staying the cloth in folded state for increasing the productivity and improving the quality of the product, and further to render the pretreating apparatus compact so as suitable for the production of small lot products.
摘要:
A method for the decolorization of waste water containing coloring matters comprising dyestuff and/or pigment, in which PVA is added to a waste water containing coloring matters as above mentioned so as to catch the coloring matters in the waste water into the PVA, a precipitant of the coloring matters is added to the resultant waste water so as to render the coloring matters absorbed onto the PVA insoluble, a coagulant of PVA is added to the waste water so as to make the PVA insoluble, and then the thus insolubilized PVA containing the coloring matters is separated for the recovery thereof, and thus the decolorization of a waste water containing the coloring matters can be done skillfully and economically by eliminating the drawbacks in the conventional arts.
摘要:
A method for separation of PVA from an aqueous solution thereof such as the waste water containing PVA from the pretreatment of a textile product, in which a peroxosulfate such as ammonium peroxosulfate is added to an aqueous PVA solution, particularly in an acidic condition with addition of sulfuric acid, at a temperature above 70.degree. C. for the separation of PVA, and as a result the thus separated PVA contains only a small amount of water in the range of about 60-70% and can easily be treated.
摘要:
An apparatus for continuously applying a treating solution as foam to a cloth, comprising a U-shaped foam tank for storing foam of a treating solution such as a dye solution supplied from an apparatus for generating foam of the treating solution, guide rolls for transporting a cloth to be treated continuously through the foam tank so as to adhere the foam of the treating solution to the cloth while the cloth is passing through the foam tank, and a means for controlling the amount of foam adhered to the cloth in taking out the cloth from the foam tank. By using this apparatus, a necessary and sufficient amount of the treating solution for the subsequent heat treatment of the cloth can be applied to the cloth uniformly with no need of removing the excess of treating solution and/or solvent from the cloth prior to the heat treatment.
摘要:
A method and an apparatus for the continuous pretreatment of a long cloth produced commercially in completely gaseous system, in which, by utilizing the combination of a desizing and scouring process in a low temperature plasma atmosphere and a bleaching process in an atmosphere of ozone and ultraviolet ray radiation, and thus entirely no application of liquid system.