摘要:
In the present invention, a recombination of gene groups of nemadectin aglycon biosynthesis is performed for obtaining C-13 hydroxylnemadectin, to which sugar groups can be attached, and a production strain which produces C-13 hydroxylnemadectin is produced. Further, C-13 glycosylnemadectin producing strain is prepared by introducing aveBI-BVIII genes involving glycosidation of avermectin and biosynthesis of oleandrose. As described, C-13 hydroxylnemadectin and C-13 glycosidated nemadectin can be obtained effectively by using the producing strain prepared by means of the molecular genetic technology, and improvement in the biological activity thereof can be expected.
摘要:
Novel polynucleotides derived from microorganisms belonging to actinomycetes and fragments thereof, polypeptides encoded by the polynucleotides and fragments thereof, polynucleotide arrays comprising the polynucleotides and fragments thereof, recording media in which the nucleotide sequences of the polynucleotide and fragments thereof have been recorded which are readable in a computer, and use of them.
摘要:
The present invention is comprised of culturing microorganism having ability to produce FKI-1033 substance represented by the formula: in a medium, accumulating FKI-1033 substance in the cultured medium, and isolating FKI-1033 substance from the cultured mass. The thus obtained FKI-1033 substance has ryanodine binding inhibition activity, insecticidal activity and anthelmintic activity, and is expected as useful drugs as agrochemicals, veterinary drugs and medicaments in effectiveness and toxicity.
摘要:
A microorganism represented by a strain K04-0144 belonging to Streptomyces sp. having ability to produce K04-0144 substance is cultured in the medium, and the isolated K04-0144A substance, K04-0144B substance and K04-0144C substance therefrom have strong antibacterial activities against Gram-positive bacteria including methicillin-resistant Streptococcus aureus (MRSA), consequently these are useful as the therapeutic agents for infectious disease caused by MRSA as well as infectious diseases caused by multidrug including β-lactam antibiotics resistant bacteria. Further, similarly, since the novel K04-0144D substance isolated from the cultured liquid has the action for enhancing the effect of β-lactam antibiotics, which are utilized as the antibacterial agents, in combination with them, it is useful as the therapeutic agent for infectious diseases caused by methicillin-resistant Staphylococcus aureus (MRSA) and multidrug including β-lactam antibiotics resistant bacteria.
摘要:
The present invention relates to novel compound of stemphones obtained by culturing microorganism belonging to genus Aspergillus and having ability to produce compound of stemphones selected from the group consisting of stemphone D substance, stemphone E substance, stemphone E1 substance, stemphone E2 substance, stemphone E3 substance and stemphone F substance, accumulating the compound of stemphones in the cultured mass, and isolating the compound of stemphones from the cultured mass. Since the obtained compound has enhancing activity for imipenem and activity for reducing cytotoxicity, it can be expected to be useful as lead compounds for combination remedy for methicillin resistant Staphylococcus aureus (MRSA) infection.
摘要:
A microorganism belonging to the genus Streptomyces and being capable of producing substance K01-0509-A1 and/or substance K01-0509-A2 is cultured in a medium. Then, the substance K01-0509-A1 and/or the substance K01-0509-A2 having been thus accumulated in the liquid culture medium are collected from the medium. It is expected that the obtained substances are efficacious as drugs which are selectively effective on pathogenic gram-negative bacteria having the type III secretion system.
摘要:
The present invention is comprised of culturing microorganism having ability to produce FKI-1083 substance represented by the formula: in a medium, accumulating FKI-1083 substance in the cultured medium, and isolating FKI-1083 substance from the cultured mass. The thus obtained FKI-1083 substance has growth inhibitory activities against microorganisms, nematodes and arthropods, and is useful as anthelmintic and insecticide.
摘要:
A microorganism having ability to produce FKI-0076 substance represented by the following formula [I] is cultured in a medium allowing for the accumulation of FKI-0076 substance in the culture liquid. The FKI-0076 substance from can then be isolated the cultured mass. Since the substance has the ability to enhance azole antifungal agents, it provides an action against various fungal infections such as deep-seated mycosis and other fungal infections in low concentration and within a short term. Consequently, the FKI-0076 is useful for reducing the frequency of appearance of resistant microorganisms. Further, usefulness for overcoming resistance is expected.
摘要:
Roselipin derivatives which are represented by the following formula: [wherein R1 represents a hydrogen atom, mannose or acetylated mannose, R2 represents a hydrogen atom or a methyl group, and R3 represents a methyl group or a sugar alcohol], excluding a compound in which R1 is mannose, R2 is a hydrogen atom and R3 is arabinitol (roselipin 1A or 1B) and a compound in which R1 is acetylated mannose, R2 is a hydrogen atom and R3 is arabinitol (roselipin 2A or 2B), and which are useful for preventing and treating a disease of a human which is caused by accumulation of triacylglycerol can be obtained.
摘要:
A process for producing a substance KF-1040A represented by formula (I), and another substance KF-1040B represented by formula (II), which comprises culturing microorganisms capable of producing the substances KF-1040A and KF-1040B, thus accumulating these KF-1040A and/or KF-1040B in the liquid culture and harvesting the same from the culture. Because of the activities of inhibiting diacyloglycerol transferase and sphingomyelinase, the above substances are useful in preventing and treating arteriosclerosis, obesity, thrombus, inflammation and immune function-related diseases.