Výsledky vyhledávání - "Shogo Kurasawa"

Correction to: Metacytofilin, a novel immunomodulator produced by Metarhizium sp. TA2759

Autor: Yoichi Iitaka, Masatomi Iijima, Shogo Kurasawa, Tomio Takeuchi, Tohru Masuda, Hikaru Nakamura, Hiroshi Naganawa, Masaaki Ishizuka, Yoshiro Okami

Publikováno v: The Journal of Antibiotics. 71:908-909

The authors of the above article misjudged the structure determination of MCF (metacytofilin). Our recent analyses using X-ray crystallography and NMR techniques revealed the correct structure as shown in Figs. 1, 2 and 3. The structure of MCF was id

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::465f514058a25a5c6f42e058837a334e
https://doi.org/10.1038/s41429-018-0045-z

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Altemicidin, a new acaricidal and antitumor substance. I. Taxonomy, fermentation, isolation and physico-chemical and biological properties

Autor: Shogo Kurasawa, Yoshiro Okami, Atsushi Takahashi, Daishiro Ikeda, Tomio Takeuchi

Publikováno v: The Journal of Antibiotics. 42:1556-1561

Screening of new insecticidal and acaricidal antibiotics was carried out with reference to anti-brine shrimp activity from actinomycete strains isolated from marine environments. Of 200 actinomycete isolates, one isolate was found to produce a new su

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82e3403267d6156cfcd1427b5a41aa4e
https://doi.org/10.7164/antibiotics.42.1556

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Thrazarine, a new antitumor antibiotic. II. Physico-chemical properties and structure determination

Autor: Hikaru Nakamura, Tomio Takeuchi, Toshiyuki Kameyama, Yoichi Iitaka, Yoshiro Okami, Daishiro Ikeda, Hiroshi Naganawa, Atsushi Takahashi, Shogo Kurasawa

Publikováno v: The Journal of Antibiotics. 41:1568-1574

A new antitumor antibiotic thrazarine was soluble in water and positive to anisaldehyde-sulfuric acid and ninhydrin color reactions. The absolute structure of thrazarine was determined to be O-[3R)-2-diazo-3-hydroxybutyryl)-L-serine by acid hydrolysi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68650d45ae5ec285d190e7cdee35c62e
https://doi.org/10.7164/antibiotics.41.1568

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Isolation and Properties of Ribocitrin

Autor: Yoshiro Okami, Masachika Takashio, Shogo Kurasawa

Publikováno v: Agricultural and Biological Chemistry. 46:1987-1996

A dextransucrase inhibitor, ribocitrin, was purified about 580-fold from a culture broth of Streptomyces neyagawaensis MF980-CF1 by combination chromatography.Ribocitrin is a previously unknown type of oligosaccharide composed of ribose. It inhibited

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::215aa9d2742959ada90f3d1322d02450
https://doi.org/10.1080/00021369.1982.10865377

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MARINACTAN, ANTITUMOR POLYSACCHARIDE PRODUCED BY MARINE BACTERIA

Autor: Takashi Ohnuki, Yoshiro Okami, Masaaki Ishizuka, Tomio Takeuchi, Tsuyoshi Shiio, Yasumi Yugari, Hamao Umezawa, Shogo Kurasawa

Publikováno v: The Journal of Antibiotics. 36:471-475

Extracellular polysaccharides of marine bacteria were screened for their antitumor activity against sarcoma-180 solid tumor in mice. An active polysaccharide was purified and named marinactan. The producing microorganism has a typical marine bacteria

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3cab72cf7114af31a1b046e12ca13ae5
https://doi.org/10.7164/antibiotics.36.471

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Bisucaberin, a new siderophore, sensitizing tumor cells to macrophage-mediated cytolysis. I. Taxonomy of the producing organism, isolation and biological properties

Autor: Hamao Umezawa, Shogo Kurasawa, Tomio Takeuchi, Toshiyuki Kameyama, Yoshiro Okami, Atsushi Takahashi, Masaaki Ishizuka

Publikováno v: The Journal of Antibiotics. 40:1664-1670

Alteromonas haloplanktis strain SB-1123 isolated from deep-sea mud produced a new siderophore, bisucaberin. Bisucaberin rendered tumor cells susceptible to cytolysis mediated by murine peritoneal macrophages which were elicited by Proteose peptone an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ca547aacb5df0a02dfbb6ffe1ff000a2
https://doi.org/10.7164/antibiotics.40.1664

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Bisucaberin, a new siderophore, sensitizing tumor cells to macrophage-mediated cytolysis. II. Physico-chemical properties and structure determination

Autor: Toshiyuki Kameyama, Hikaru Nakamura, Tomio Takeuchi, Shogo Kurasawa, Hiroshi Naganawa, Atsushi Takahashi, Yoichi Iitaka, Yoshiro Okami, Hamao Umezawa

Publikováno v: The Journal of antibiotics. 40(12)

The structure of bisucaberin, a new siderophore, was determined to be 1,12-dihydroxy-1,6,12,17-tetraazacyclodocosane-2,5,13,16-tetron e by spectroscopic analysis and X-ray crystallographic analysis. The molecule of bisucaberin consists of a cyclic di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5945aa13ece9bc077ccd4d2ff4f4684
https://pubmed.ncbi.nlm.nih.gov/2962973

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New antibiotic-producing streptomycetes, selected by antibiotic resistance as a marker. I. New antibiotic production generated by protoplast fusion treatment between Streptomyces griseus and S. tenjimariensis

Autor: Hamao Umezawa, Fumio Yamashita, Shogo Kurasawa, Yoshiro Okami, Kunimoto Hotta

Publikováno v: The Journal of antibiotics. 38(1)

A novel antibiotic was found after performing an interspecific fusion treatment between Streptomyces griseus and S. tenjimariensis by the selection of clones with a unique antibiotic resistance. Nonantibiotic-producing mutants of streptomycin (SM)-pr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f6c5afd593847140c8ab304f6051310f
https://pubmed.ncbi.nlm.nih.gov/3972729

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