摘要:
A method for performing site-directed mutagenesis characterized in that the method includes the step of carrying out PCR by the use of a double-stranded DNA vector having one or more amber codons, the vector resulting from insertion of a target DNA fragment for site-directed mutagenesis, and at least two kinds of selection primers; and a kit for site-directed mutagenesis for use in the above method, characterized in that the kit includes amber codon reversion primers. According to the present invention, there can be provided a method for performing site-directed mutagenesis and a kit, which is useful for genetic engineering or protein engineering, more simply and rapidly. By using the method and the kit of the present invention, it is possible to efficiently obtain a mutation-introduced gene at the desired position by simply transforming a host with a PCR product obtained by PCR.
摘要:
The invention provides an isolated gene coding for a protein regulating aureobasidin sensitivity; a process for cloning the gene with the use of the gene or a part of the same as a probe; a nucleic acid probe being hybridizable with the gene; an antisense DNA or RNA of the gene; a recombinant or transformant having the gene contained therein; an isolated protein regulating aureobasidin sensitivity and a process for producing the same by using the transformant; an antibody for the protein; a process for detecting the protein or the gene; and a process for screening an antimycotic by using the protein or the transformant. The invention is useful in the diagnosis and treatment of diseases including mycoses.
摘要:
The present invention provides a protein regulating the sensitivity of fungus to an antimycotic aureobasidin, a gene coding for this protein, the use thereof, an antibody for the protein and the use thereof. The invention is useful in the diagnosis and treatment for diseases including mycoses. The invention also provides a novel chromosome integration vector capable of imparting a novel selective marker of a drug resistance to a fungal transformant, a transformant transformed with this vector and a process for producing the same. In particular, it provides a protein capable of imparting the resistance to aureobasidin and acting as a selective marker and a DNA coding for the same.
摘要:
The present invention has its object to provide a noble antifungal substance which is use of as clinical medicine in the therapy of fungal infectious diseases. The present invention is related to an antibiotic TKR459 having the following chemical formula (1) or its pharmacologically acceptable salt.
摘要:
To provide an amino terminal protecting group-releasing enzyme characterized in that the enzyme possesses an activity for releasing a protecting group by acting on a peptide of which amino terminal is blocked by the protecting group, and exhibits the activity for two or more protecting groups, or a functional equivalent thereof; a DNA encoding the same; a method for producing the enzyme; a method for removing amino terminal protecting group including the step of subjecting to a reaction with the enzyme to release amino terminal protecting group; and a method for analyzing an amino acid sequence. The above enzyme is useful in the analysis of an amino acid sequence of peptides, particularly proteins and peptides, of which amino terminal is blocked by unknown protecting groups.
摘要:
A plasmid vector characterized by comprising a promoter sequence that can be recognized by an RNA polymerase which is not inherent in a host and that controls the expression of desired genes and a replication origin that increases the number of copies under the induction by exogenous factors; methods for expression and isolation of target genes by using the vector; a polypeptide having the activity of an AccIII restriction endonuclease; and a DNA encoding the polypeptide. The invention provides for the first time a plasmid vector which can introduce an exogenous desired gene encoding proteins which are lethal or harmful to hosts into the hosts, a method for efficiently expressing the proteins by using the vector, and also a method for permitting a restriction endonuclease gene constituting a restriction-modification system to be isolated even in the absence of a modification enzyme gene, which has been difficult in the prior arts.
摘要:
Cyclopentenone derivative having a structure of 5-(R.sub.1 COO--)-4-(R.sub.2 COO--)--substituted 2-cyclopenten-1-one (R.sub.1 and R.sub.2 are some or different and each is alkyl group, alkenyl group or aryl group) or an optically active substance thereof; a method for the manufacture of the cyclopentenone derivative by the reaction of 4,5-dihydroxy-2-cyclopenten-1-one with the corresponding carboxylic acid or a reactive derivative thereof; and anticancer agent, apoptosis-inducing agent and antibacterial agent containing said derivative.
摘要:
The object of the present invention is to provide a novel bioactive substance of value as a therapeutic agent for mycosis, and the like.This invention relates to the bioactive substance TKR1785 of the following general formula (A): ##STR1## (wherein R represents --CH(CH.sub.3).sub.2 or --CH(CH.sub.3)C.sub.2 H.sub.5).
摘要:
A gene associated with sensitivity to the antimycotic agent, aureobasidin A, has been isolated. The gene can be detected in a variety of cell types, and variant forms of the gene have been identified in mutant yeast strains. The proteins encoded by these genes are useful in diagnosing and treating mycoses.