Abstract:
The present invention provides a gene encoding the type B subunit protein of avian lactate dehydrogenase. The gene encoding the type B subunit protein of avian lactate dehydrogenase of the present invention is obtained by plaque hybridization or the like from a cDNA library derived from avian heart muscle and encodes the type B subunit protein of avian lactate dehydrogenase having the sequences shown as SEQ ID NO. 1 or 2.
Abstract:
The present invention provides a gene encoding the type B subunit protein of avian lactate dehydrogenase. The gene encoding the type B subunit protein of avian lactate dehydrogenase of the present invention is obtained by plaque hybridization or the like from a cDNA library derived from avian heart muscle and encodes the type B subunit protein of avian lactate dehydrogenase having an amino acid sequence shown as SEQ ID NO. 2.
Abstract translation:本发明提供编码禽类乳酸脱氢酶的B型亚基蛋白的基因。 本发明的编码禽类乳酸脱氢酶B型亚单位蛋白的基因是通过来自禽心肌的cDNA文库的斑块杂交等获得的,并编码具有氨基酸序列的禽类乳酸脱氢酶的B亚基蛋白 如SEQ ID NO。 2。
Abstract:
The invention relates to a mutated human ALT (alanine aminotransferase) gene improving the DNA sequence encoding the N-terminal region of human ALT, without causing amino acid substitution, while, at the same time, adding restriction endonuclease sites to the upstream and downstream sites of the gene. By cultivation of E. coli transformant carrying a recombinant plasmid, which was constructed by ligation of the mutated human ALT gene into a vector, an active human ALT can be produced efficiently.
Abstract:
The present invention relates to a method for producing human myoglobin by inserting a DNA sequence comprising a human myoglobin gene into a tryptophan promoter-containing vector, followed by making E. coli with the thus-obtained expression vector express a holo-type human myoglobin. Using this method, it is possible to directly and efficiently produce a heme-structured, holo-type human myoglobin by gene recombination technology.
Abstract:
The present invention provides a method for producing nested deletions in vitro in desired DNA, comprising: 1) preparing a vector containing a DNA fragment in which nested deletions are to be generated and the terminal repeat of a transposon; 2) incubating the vector in vitro with transposase and a DNA replication system; 3) obtaining the vector incorporating the DNA fragment with nested deletions as a reaction product; and optionally, 4) transforming a host cell with the reaction product and growing it; and 5) recovering a vector incorporating said DNA fragment with nested deletions from the grown host cell.
Abstract:
The present invention provides a process for producing biologically active recombinant yeast protein disulfide isomerase, which includes the steps of: a) deleting, substituting, or adding one or more bases in a region encoding an endoplasmic reticulum retention signal in a gene encoding protein disulfide isomerase of yeast to modify the gene so as not to encode part or all of the endoplasmic reticulum retention signal; b) incorporating the modified gene into an expression vector; c) transforming host cells with the expression vector; and d) culturing the host cells transformed with the expression vector in a culture medium kept at a nearly neutral pH, thereby causing protein disulfide isomerase to be secreted in an active state outside the host cells. According to the process of the invention, recombinant yeast protein disulfide isomerase can be secreted in a large amount in a biologically active state into a culture medium, and can be collected by a simple purification method.