Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Shogo Kurasawa"'
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
Autor:
Tohru Masuda, Yoichi Iitaka, Yoshiro Okami, Masatomi Iijima, Tomio Takeuchi, Hikaru Nakamura, Shogo Kurasawa, Masaaki Ishizuka, Hiroshi Naganawa
Publikováno v:
The Journal of Antibiotics. 45:1553-1556
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
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
Autor:
Kazuo Umezawa, Shogo Kurasawa, Takashi Yamashita, Masaya Imoto, Kunio Isshiki, Hiroshi Naganawa, Bao Quan Zhu, Tsutomu Sawa
Publikováno v:
Journal of Natural Products. 51:1184-1187
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
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
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
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
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