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Tsuji RF, Uramoto M, Koshino H, Tsuji NM, Magae J, Nagai K, Yamasaki M. Preferential Suppression of Delayed-type Hypersensitivity by L-156,602, a C5a Receptor Antagonist. Biosci Biotechnol Biochem 2014; 56:1686-9. [PMID: 1369067 DOI: 10.1271/bbb.56.1686] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In the course of our screening for in vivo immunomodulating substances in which sheep red blood cells (SRBC) and heat-killed Brucella abortus cells (thymus dependent and independent antigens, respectively) for antibody production assays, and trinitrobenzene sulfonic acid (TNBS) for delayed-type hypersensitivity (DTH) assay were adopted as antigens, we detected a DTH-specific suppressive activity. The producing organism was isolated from a soil sample collected in Ushiku City, Ibaraki, Japan and identified with Streptomyces sp. A1502 (FERM P-12448). The active component was identified with L-156,602, a C5a receptor antagonist. L-156,602 suppressed both TNBS-induced and TNP-SRBC-induced DTH while it enhanced antibody production against SRBC, Brucella abortus, and TNP-SRBC. L-156,602 significantly suppressed DTH induced by direct injection of type 1 helper T cells and its relevant antigen into hind-footpads, indicating that the efferent phase of DTH was affected by L-156,602. The results demonstrated that L-156,602 preferentially suppressed the DTH response.
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Affiliation(s)
- R F Tsuji
- Department of Agricultural Chemistry, University of Tokyo, Japan
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2
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Suzuki Y, Takahashi H, Esumi Y, Arie T, Morita T, Koshino H, Uzawa J, Uramoto M, Yamaguchi I. Haematocin, a new antifungal diketopiperazine produced by Nectria haematococca Berk. et Br. (880701a-1) causing nectria blight disease on ornamental plants. J Antibiot (Tokyo) 2000; 53:45-9. [PMID: 10724007 DOI: 10.7164/antibiotics.53.45] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new antifungal diketopiperazine named haematocin was isolated from the culture broth of Nectria haematococca Berk. et Br. (880701a-1) causing blight disease on ornamental plants, Phalaenopsis spp. and Doritanopsis spp. Its structure was established by spectroscopic methods. Haematocin inhibited the germ-tube elongation and spore-germination of Pyricularia oryzae at the ED50 values of 30 microg/ml and 160 microg/ml, respectively.
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Affiliation(s)
- Y Suzuki
- The Institute of Physical and Chemical Research (RIKEN), Wako-shi, Saitama, Japan
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3
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Esumi Y, Suzuki Y, Kimura K, Yoshihama M, Ichikawa T, Uramoto M. New types of liposidomycins produced by Streptomyces that inhibit bacterial peptidoglycan synthesis. Structure elucidation of fatty acid components by tandem mass spectrometry. J Antibiot (Tokyo) 1999; 52:281-7. [PMID: 10348044 DOI: 10.7164/antibiotics.52.281] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structures of the fatty acid components of various new liposidomycins were determined using tandem mass spectrometry; the negative FAB/MS/MS/MS technique for liposidomycins with a 3-methylglutaric acid moiety and the negative FAB/MS/MS technique for liposidomycins without a 3-methylglutaric acid moiey. This structural information was obtained by analysis of peaks due to charge-remote fragmentations for 3-hydroxycarboxylate anions or carboxylate anions which were generated from liposidomycin molecules in a mass spectrometer. The MS/MS/MS technique that can exclude the matrix-derived and/or interfering ions showed higher sensitivity than the MS/MS technique.
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Affiliation(s)
- Y Esumi
- The Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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4
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Nakakoshi M, Kimura K, Nakajima N, Yoshihama M, Uramoto M. SNA-4606-1, a new member of elaiophylins with enzyme inhibition activity against testosterone 5 alpha-reductase. J Antibiot (Tokyo) 1999; 52:175-7. [PMID: 10344572 DOI: 10.7164/antibiotics.52.175] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- M Nakakoshi
- Research Institute of Life Science, Snow Brand Milk Products Co., Ltd., Tochigi, Japan
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5
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Sato T, Hanada T, Arioka M, Morita TI, Koshino H, Uramoto M, Yamasaki M, Kitamoto K. S19159, a modulator of neurite outgrowth produced by the ascomycete Preussia aemulans. II. Structure elucidation. J Antibiot (Tokyo) 1998; 51:1047-50. [PMID: 9918399 DOI: 10.7164/antibiotics.51.1047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- T Sato
- Department of Biotechnology, The University of Tokyo, Japan
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6
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Sato T, Hanada T, Arioka M, Ando K, Sugiyama J, Uramoto M, Yamasaki M, Kitamoto K. S19159, a modulator of neurite outgrowth produced by the ascomycete Preussia aemulans. I. Producing strain, fermentation, isolation and biological activity. J Antibiot (Tokyo) 1998; 51:897-901. [PMID: 9917001 DOI: 10.7164/antibiotics.51.897] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A modulator of neurite outgrowth, designated S19159, was isolated from the fermentation broth of fungal strain 19159. This fungus was identified as the loculoascomycete, Preussia aemulans (Rehm) von Arx. In the presence of S19159, the number of neurites extending from the cell bodies of cerebral cortical neurons was markedly reduced. The effect of S19159 was observed specifically in neurons from the central nervous system. The compound exhibited similar activities on cultured cortical, hippocampal and cerebeller neurons but was without detectable effect on dorsal root ganglion neurons and PC12 cells.
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Affiliation(s)
- T Sato
- Department of Biotechnology, The University of Tokyo, Japan
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7
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Kajiura T, Furumai T, Igarashi Y, Hori H, Higashi K, Ishiyama T, Uramoto M, Uehara Y, Oki T. Signal transduction inhibitors, hibarimicins, A, B, C, D and G produced by Microbispora. I. Taxonomy, fermentation, isolation and physico-chemical and biological properties. J Antibiot (Tokyo) 1998; 51:394-401. [PMID: 9630861 DOI: 10.7164/antibiotics.51.394] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Strain TP-AO121 which produces a complex of novel tyrosine kinase inhibitors designated hibarimicins A, B, C, D and G was considered to be a new subspecies of Microbispora rosea, and the name, Microbispora rosea subsp. hibaria, was proposed. Hibarimicins A, B, C and D specifically inhibited the src tyrosine kinase activity without affecting protein kinase A or protein kinase C. They also showed in vitro anti-Gram-positive bacterial and antitumor activities. The molecular formulae of hibarimicins A, B, C, D and G were assigned to be C85H112O37, C85H112O37, C83H110O36, C85H112O38, and C85H112O39 respectively.
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Affiliation(s)
- T Kajiura
- Biotechnology Research Center, Toyama Prefectural University, Japan
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8
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Tajika T, Bando I, Furuta T, Moriya N, Koshino H, Uramoto M. Novel amino acid metabolite produced by Streptomyces sp.: I. Taxonomy, isolation, and structural elucidation. Biosci Biotechnol Biochem 1997; 61:1007-10. [PMID: 9214763 DOI: 10.1271/bbb.61.1007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A strain of streptomycete isolated from a soil sample was found to produce a novel amino acid metabolite. The compound was purified from the culture fluid by chromatography, using cation exchange resin, a synthetic adsorbent, and finally by preparative HPLC with a reverse-phase column. The structure of the compound was established as N(delta)-(5-methyl-4-oxo-2-imidazolin-2-yl)-L-ornithine on the basis of an analysis of the spectral data and chemical degradation. This was confirmed by comparing the NMR spectrum of the metabolite with that of the compound synthesized by treating methylglyoxal and N(alpha)-acetyl-L-arginine. The substance did not show any antimicrobial activity against bacteria, fungi and yeasts by the agar plate method, but exhibited a weak preventive effect on cucumber mildew disease in a pot test.
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Affiliation(s)
- T Tajika
- Faculty of Agriculture, Tamagawa University, Tokyo, Japan
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9
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Kimura K, Nakayama S, Nakamura J, Takada T, Yoshihama M, Esumi Y, Itoh Y, Uramoto M. SNA-60-367, new peptide enzyme inhibitors against aromatase. J Antibiot (Tokyo) 1997; 50:529-31. [PMID: 9268012 DOI: 10.7164/antibiotics.50.529] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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10
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Kimura K, Kanou F, Takahashi H, Esumi Y, Uramoto M, Yoshihama M. Propeptin, a new inhibitor of prolyl endopeptidase produced by Microbispora. I. Fermentation, isolation and biological properties. J Antibiot (Tokyo) 1997; 50:373-8. [PMID: 9207905 DOI: 10.7164/antibiotics.50.373] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Propeptin, an inhibitor of the prolyl endopeptidase isolated from the mycelium of Microbispora sp. SNA-115, is an atypical cyclic peptide antibiotic. It was purified by column chromatographies on silica gel and Sephadex LH-20 and high performance liquid chromatography using an ODS column. Propeptin has the molecular formula of C113H142N26O27 and consists of nineteen amino acids. Propeptin inhibited prolyl endopeptidase of the genus Flavobacterium competitively when Z-Gly-Pro-pNA was used as a substrate. The inhibitor constant (Ki) was 0.70 microM.
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Affiliation(s)
- K Kimura
- Research Institute of Life Science, Snow Brand Milk Products Co., Ltd, Tochigi, Japan
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11
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Suzuki K, Sasaki J, Uramoto M, Nakase T, Komagata K. Cryobacterium psychrophilum gen. nov., sp. nov., nom. rev., comb. nov., an obligately psychrophilic actinomycete to accommodate "Curtobacterium psychrophilum" Inoue and Komagata 1976. Int J Syst Bacteriol 1997; 47:474-8. [PMID: 9103638 DOI: 10.1099/00207713-47-2-474] [Citation(s) in RCA: 77] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
"Curtobacterium psychrophilum," proposed by Inoue and Komagata in 1976, is a psychrophilic gram-positive irregular rod isolated from Antarctic soil. This organism grew optimally at 9 to 12 degrees C and did not grow at higher than 18 degrees C. Chemotaxonomic characteristics of this organism were the presence of 2,4-diaminobutyric acid in the cell wall and menaquinone-10 as the predominant respiratory quinone. The cellular fatty acid profile, which contained a significant amount of an anteiso-branched monounsaturated acid, 12-methyl tetradecenoic acid, was a distinctive characteristic of this organism and was reasonable for adaptation to low temperature. Phylogenetic analysis based on 16S ribosomal DNA sequences revealed that this organism was positioned at a separate branch in the family Microbacteriaceae, actinomycetes with group B peptidoglycan. We propose the name Cryobacterium psychrophilum gen. nov., sp. nov. for this organism. The type strain is JCM 1463 (= IAM 12024 = ATCC 43563 = IFO 15735 = NCIMB 2068).
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Affiliation(s)
- K Suzuki
- Japan Collection of Microorganisms, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan.
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12
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Kimura K, Kanou F, Koshino H, Uramoto M, Yoshihama M. SNA-8073-B, a new isotetracenone antibiotic inhibits prolyl endopeptidase. I. Fermentation, isolation and biological properties. J Antibiot (Tokyo) 1997; 50:291-6. [PMID: 9186552 DOI: 10.7164/antibiotics.50.291] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
SNA-8073-B, an inhibitor of prolyl endopeptidase isolated from the broth filtrate of Streptomyces sp. SNA-8073, is a new isotetracenone antibiotic. It was purified by ethyl acetate extraction, silica gel column chromatography and high performance liquid chromatography on ODS column. SNA-8073-B has the molecular formula of C20H16O5 and is a stereoisomer of SNA-8073-A (fujianmycin B, rubiginone A2). SNA-8073-B inhibited prolyl endopeptidase of Flavobacterium non-competitively (IC50 = 8.9 microM) when Z-Gly-Pro-pNA was used as a substrate, but SNA-8073-A did not show any inhibition even at 60 microM.
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Affiliation(s)
- K Kimura
- Research Institute of Life Science, Snow Brand Milk Products Co., Ltd., Tochigi, Japan
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13
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Hanada T, Sato T, Arioka M, Uramoto M, Yamasaki M. Purification and characterization of a 15 kDa protein (p15) produced by Helicosporium that exhibits distinct effects on neurite outgrowth from cortical neurons and PC12 cells. Biochem Biophys Res Commun 1996; 228:209-15. [PMID: 8912661 DOI: 10.1006/bbrc.1996.1641] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We have found that a 15 kDa protein (p15) produced by a fungus of Helicosporium genus induced characteristic morphological changes on neurites extending from rat cerebral cortex neurons in culture. In the presence of p15, neurite elongation from cortical neurons was markedly inhibited, and they extended short, slender, and less branched neurites. Laminin-induced promotion of neurite outgrowth was also dramatically suppressed. In contrast, p15 promoted nerve growth factor (NGF)-induced neurite outgrowth from PC12 cells, although treatment of cells with p15 alone had little effect. Partial amino acid sequence analysis of p15 revealed that it had limited homology to plant lectins. These results suggest that the mechanism of neurite outgrowth was considerably different between cortical neurons and PC12 cells and that p15 modulated neurite outgrowth in cell type-specific manners.
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Affiliation(s)
- T Hanada
- Department of Biotechnology, University of Tokyo, Japan
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14
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Kim SD, Ryoo IJ, Kim CJ, Kim WG, Kim JP, Kong JY, Koshino H, Uramoto M, Yoo ID. GERI-155, a new macrolide antibiotic related to chalcomycin. J Antibiot (Tokyo) 1996; 49:955-7. [PMID: 8931736 DOI: 10.7164/antibiotics.49.955] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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15
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Kimura K, Takahashi H, Miyata N, Yoshihama M, Uramoto M. New piericidin antibiotics, 7-demethylpiericidin A1 and 7-demethyl-3'-rhamnopiericidin A1. J Antibiot (Tokyo) 1996; 49:697-9. [PMID: 8784434 DOI: 10.7164/antibiotics.49.697] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- K Kimura
- Research Institute of Life Science, Snow Brand Milk Products Co., Ltd., Tochigi, Japan
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16
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Suzuki K, Sasaki J, Uramoto M, Nakase T, Komagata K. Agromyces mediolanus sp. nov., nom. rev., comb. nov., a species for "Corynebacterium mediolanum" Mamoli 1939 and for some aniline-assimilating bacteria which contain 2,4-diaminobutyric acid in the cell wall peptidoglycan. Int J Syst Bacteriol 1996; 46:88-93. [PMID: 8573525 DOI: 10.1099/00207713-46-1-88] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
In the course of identifying aniline-assimilating bacteria, researchers found some gram-positive strains that contain 2,4-diaminobutyric acid in their cell wall peptidoglycans and menaquinone 12 as the predominant menaquinone. "Corynebacterium mediolanum" and "Flavobacterium dehydrogenans" also are known to contain 2,4-diaminobutyric acid in their cell walls, as well as menaquinone 12, but the taxonomic position of these organisms has not been established previously. We found that the aniline-assimilating strains, together with "C. mediolanum" and "F. dehydrogenans," belong to a single species of the genus Agromyces, as determined by phenotypic characteristics, DNA-DNA relatedness data, and 16S ribosomal DNA sequence similarity data. The name Agromyces mediolanus sp. nov., nom. rev., comb. nov., is proposed for these organisms. The type strain of A. mediolanus is strain JCM 3346 (= ATCC 14004 = NCIMB 7206).
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Affiliation(s)
- K Suzuki
- Japan Collection of Microorganisms, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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17
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Abstract
Three new dihydroflavonols, gericudranins A-C were isolated from the stem bark of Cudrania tricuspidata. They were identified as 6,8-di-p-hydroxybenzyltaxifolin, 8-p-hydroxybenzyltaxifolin and 6-p-hydroxybenzyltaxifolin, respectively, by means of spectral studies. These compounds were cytotoxic to human tumor cell lines, such as CRL 1579 (skin), LOX-IMVI (skin), MOLT-4F (leukemia), KM12 (colon) and UO-31 (renal) in culture, with ED50 values of 2.7-31.3 micrograms ml-1.
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Affiliation(s)
- I K Lee
- Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, Korea
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18
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Ubukata M, Morita TI, Uramoto M, Osada H. Sparoxomycins A1 and A2, new inducers of the flat reversion of NRK cells transformed by temperature sensitive Rous sarcoma virus. II. Isolation, physico-chemical properties and structure elucidation. J Antibiot (Tokyo) 1996; 49:65-70. [PMID: 8609089 DOI: 10.7164/antibiotics.49.65] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Sparoxomycins A1 and A2, isolated from the fermentation broth and mycelium of Streptomyces sparsogenes SN2325, are new inducers of the flat reversion of NRK cells transformed by temperature sensitive Rous sarcoma virus. Sparoxomycins A1 and A2 were isolated by active carbon chromatography, centrifugal partition chromatography (CPC), ODS column chromatography and preparative HPLC. The structure of sparoxomycins were determined by spectroscopic evidences. Stereochemical assignments of these inducers were executed from the analyses of CD spectra.
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Affiliation(s)
- M Ubukata
- The Institute of Physical and Chemical Research (RIKEN), Saitama 351-01, Japan
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19
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Taniguchi M, Kataoka T, Suzuki H, Uramoto M, Ando M, Arao K, Magae J, Nishimura T, Otake N, Nagai K. Costunolide and dehydrocostus lactone as inhibitors of killing function of cytotoxic T lymphocytes. Biosci Biotechnol Biochem 1995; 59:2064-7. [PMID: 8541643 DOI: 10.1271/bbb.59.2064] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Costunolide and dehydrocostus lactone were isolated from an extract of mokko (Saussurea lappa Clarke) as inhibitors of killing activity of cytotoxic T lymphocytes (CTL). Mokko lactone was also isolated as an inactive compound from the extract. The structure-activity relationship indicated that alpha-methylene-gamma-butyrolactone is required for the inhibitory effect. Costunolide markedly inhibited the granule exocytosis and the production of inositol phosphates in response to anti-CD3 monoclonal antibody (mAb) stimulation at a concentration that did not affect the binding of anti-CD3 mAb. Tyrosine phosphorylation induced by crosslinking of CD3 molecules was significantly inhibited by costunolide in a dose-dependent manner. These results suggest that costunolide inhibits the killing activity of CTL through preventing the increase in tyrosine phosphorylation in response to the crosslinking of T-cell receptors.
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Affiliation(s)
- M Taniguchi
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
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20
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Park SC, Kim CJ, Uramoto M, Yun HI, Yoon KH, Oh TK. Antibacterial substance produced by Streptococcus faecium under anaerobic culture. Biosci Biotechnol Biochem 1995; 59:1966-7. [PMID: 8534993 DOI: 10.1271/bbb.59.1966] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A facultative anaerobe isolated from Korean domestic soil produced an antibacterial substance under strict anaerobic conditions. Based on the morphological and biochemical tests, and cellular fatty acid profiles, the anaerobe was identified as Streptococcus faecium. An antimicrobial compound produced from the S. faecium was identified as 3,7,12-trihydroxy-24-cholanic acid methylester on the basis of its physico-chemical analysis. This substance had potent antibacterial activities against a test organism harboring multiple antibiotic resistance markers, and a variety of pathogenic bacteria. The isolated S. faecium produced lactic acid as well as the antibiotic compound under the anaerobic conditions.
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Affiliation(s)
- S C Park
- Applied Microbiology Laboratory, Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, Republic of Korea
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21
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Watanabe N, Kataoka T, Tajika T, Uramoto M, Magae J, Nagai K. 1'-Acetoxychavicol acetate as an inhibitor of phagocytosis of macrophages. Biosci Biotechnol Biochem 1995; 59:1566-7. [PMID: 7549106 DOI: 10.1271/bbb.59.1566] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We screened extracts of edible plants for inhibitors of phagocytosis by peritoneal exudate macrophages. 1'-Acetoxychavicol acetate was isolated from the ethyl acetate extract of Languas galanga, and this compound strongly inhibited phagocytosis at an IC50 value of 1.2 microM with negligible effects on pinocytosis and cell viability. Target(s) of 1'-acetoxychavicol acetate was suggested to be downstream of the signal transduction pathway that is mediated by protein kinase C.
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Affiliation(s)
- N Watanabe
- Department of Bioengineering, Tokyo Institute of Technology, Kanagawa, Japan
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22
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Tsuji RF, Yamakoshi J, Uramoto M, Koshino H, Saito M, Kikuchi M, Masuda T. Anti-inflammatory effects and specificity of L-156,602: comparison of effects on concanavalin A and zymosan-induced footpad edema, and contact sensitivity response. Immunopharmacology 1995; 29:79-87. [PMID: 7768675 DOI: 10.1016/0162-3109(95)00047-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We investigated the in vivo selective anti-inflammatory effect of L-156,602, which was first identified as a preferential delayed-type hypersensitivity-suppressant in our screening program and first reported to be a C5a antagonist. The agent most profoundly suppressed footpad edema 4 h after elicitation by concanavalin A (con A) and also caused a significantly impaired response after a further 20 h. Footpad edema induced by either serotonin, carrageenan or zymosan was not much influenced by the agent. Although the dominant cell population that migrated in response to con A and zymosan 4 h after elicitation was neutrophils, L-156,602 specifically prevented the con-A-induced migration of neutrophils, suggesting a distinct mechanism of neutrophil recruitment between con A and zymosan-induced inflammation. The agent also reduced the contact-sensitivity response, especially in host mice sensitized with a moderate dose of picryl chloride and almost completely suppressed the infiltration of mononuclear leukocytes and neutrophils into the site of inflammation. These selective effects of L-156,602 on inflammatory reactions appeared to be not merely via C5a antagonism.
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/administration & dosage
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Antibiotics, Antineoplastic/administration & dosage
- Antibiotics, Antineoplastic/pharmacology
- Antibiotics, Antineoplastic/therapeutic use
- Carrageenan/toxicity
- Complement C5a/antagonists & inhibitors
- Concanavalin A/toxicity
- Dermatitis, Contact/drug therapy
- Edema/chemically induced
- Edema/drug therapy
- Female
- Hindlimb/pathology
- Mice
- Mice, Inbred DBA
- Neutrophils/drug effects
- Peptides, Cyclic/administration & dosage
- Peptides, Cyclic/pharmacology
- Peptides, Cyclic/therapeutic use
- Picryl Chloride/toxicity
- Serotonin/toxicity
- Specific Pathogen-Free Organisms
- Zymosan/toxicity
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Affiliation(s)
- R F Tsuji
- Noda Institute for Scientific Research, Chiba, Japan
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23
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Affiliation(s)
- J Kawashima
- Biotechnology Research Laboratory, Kobe Steel Ltd., Hyogo, Japan
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24
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Magae J, Nagi T, Takaku K, Kataoka T, Koshino H, Uramoto M, Nagai K. Screening for specific inhibitors of phagocytosis of thioglycollate-elicited macrophages. Biosci Biotechnol Biochem 1994; 58:104-7. [PMID: 7764505 DOI: 10.1271/bbb.58.104] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Phagocytosis is one of the basic and characteristic properties of macrophages. We screened metabolites of Actinomyces for low molecular weight substances that selectively inhibited phagocytosis of dried yeast but not pinocytosis of neutral red by thioglycollate-elicited peritoneal macrophages. Inhibitors of actin filament organization, protein kinases, respiration, and lipid synthesis selectively inhibited phagocytosis, and blockers of proton gradients selectively inhibited pinocytosis. This suggests that these functions are differently regulated. We applied this system to screening of metabolites of Actinomyces, and identified mycotrienin, piericidin, and genistein as selective inhibitors of phagocytosis.
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Affiliation(s)
- J Magae
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
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25
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Magae J, Munemura K, Ichikawa C, Osada K, Hanada T, Tsuji RF, Yamashita M, Hino A, Horiuchi T, Uramoto M. Effects of microbial products on glucose consumption and morphology of macrophages. Biosci Biotechnol Biochem 1993; 57:1628-31. [PMID: 7764260 DOI: 10.1271/bbb.57.1628] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
We studied the effects of microbial products on glucose consumption and morphology of macrophages which were elicited with thioglycollate medium. Macromolecules such as lipopolysaccharide (LPS), tumor promoters, and respiratory inhibitors increased macrophage glucose consumption without inducing evident morphological changes. The assay system was used to screen for active substances in culture broth extracts from actinomycetes. Among them, aureothin increased glucose consumption of macrophages and inhibited respiration of a rat mitochondrial fraction. Concanamycin A induced morphological changes of macrophages into needle-like shapes but not of cloned cells including the macrophage-like cells J774.1. This compound changed fibrosarcoma L929 cells into round shapes without affecting the shape of a nontransformed fibroblast, BALB/3T3 cells. Antimycin and concanamycin A increased tumor-killing activity of macrophages when added during the effector phase. These results suggest that this assay system is simple and sufficiently reproducible and thus usable for screening for modulators of macrophage function among natural products.
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Affiliation(s)
- J Magae
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
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26
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Magae J, Tsuji RF, Wang Z, Kataoka T, Lee MH, Hanada T, Kurisaki T, Uramoto M, Yamasaki M, Nagai K. Melastin, a novel product of Streptomyces that selectively inhibits leukemia cell growth. Biosci Biotechnol Biochem 1993; 57:969-72. [PMID: 7763886 DOI: 10.1271/bbb.57.969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In the course of our screening for new immunomodulators, a novel compound, melastin, was purified from the culture broth of Streptomyces. Melastin was purified through absorption to Diaion HP-20, ethanol precipitation, and anion exchange column as a brown powder. The molecular weight was estimated as 5000 +/- 3000 by gel filtration HPLC. Melastin suppressed lipopolysaccharide (LPS)-induced blastogenesis of B cells more profoundly than concanavalin A (con A)- or phytohemagglutinin (PHA)-induced blastogenesis of T cells. Moreover, it selectively inhibited the growth of several leukemia cells as compared with interleukin-dependent nontransformed leukocytes. No selectivity was observed between nontransformed fibroblasts and their oncogene-transformed variants. Melastin did not selectively inhibit macromolecule synthesis of leukemia cells.
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Affiliation(s)
- J Magae
- Department of Bioengineering, Tokyo Institute of Technology, Yokohama, Japan
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27
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Uramoto M, Kim CJ, Shin-Ya K, Kusakabe H, Isono K, Phillips DR, McCloskey JA. Isolation and characterization of phosmidosine. A new antifungal nucleotide antibiotic. J Antibiot (Tokyo) 1991; 44:375-81. [PMID: 2032945 DOI: 10.7164/antibiotics.44.375] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A new nucleotide antibiotic, phosmidosine was isolated from a culture filtrate of a newly isolated streptomycete identified as Streptomyces sp. RK-16. HRFAB-MS and elemental analysis established the molecular formula of C16H24N7O8P. 1H, 13C and 31P NMR indicated the presence of a methyl phosphate group and UV spectra were similar to those of 8-hydroxyadenosine. The antibiotic inhibited spore formation of Botrytis cinerea at the concentration of 0.25 micrograms/ml.
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Affiliation(s)
- M Uramoto
- Antibiotics Laboratory, RIKEN, Institute of Physical and Chemical Research, Saitama, Japan
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28
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Osada H, Uramoto M, Uzawa J, Kajikawa K, Isono K. New pyrrolobenzodiazepine antibiotics, RK-1441A and B. II. Isolation and structure. Agric Biol Chem 1990; 54:2883-7. [PMID: 1368648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Antibacteriophage antibiotics, RK-1441A and B, related to neothramycin were isolated from the culture broth of Streptomyces sp. and their structures were deduced from spectroscopic analyses. The structure of RK-1441A was 8,11-dihydroxy-3,7-dimethoxy-5-oxo-1H-pyrrolo[2,1-c:1,4]benzodiazepine. RK-1441B is a tautomeric mixture at C-3 of the structure, 3,8,11-trihydroxy-7-methoxy-5-oxo-1H-pyrrolo[2,1-c:1,4]benzodiazepine.
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Affiliation(s)
- H Osada
- RIKEN (The Institute of Physical and Chemical Research), Saitama, Japan
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29
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Takahashi H, Osada H, Uramoto M, Isono K. A new inhibitor of protein kinase C, RK-286C (4'-demethylamino-4'-hydroxystaurosporine). II. Isolation, physico-chemical properties and structure. J Antibiot (Tokyo) 1990; 43:168-73. [PMID: 2312405 DOI: 10.7164/antibiotics.43.168] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
RK-286C, a new inhibitor of protein kinase C, has been found by the bleb-forming assay using K562 cells. It was produced by Streptomyces sp. RK-286 and purified by solvent extraction, silica gel chromatography and preparative HPLC. Spectrometric analysis revealed that the structure is 4'-demethylamino-4'-hydroxystaurosporine.
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Affiliation(s)
- H Takahashi
- Antibiotics Laboratory, RIKEN, Institute of Physical and Chemical Research, Saitama, Japan
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30
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31
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Sonoda T, Osada H, Uramoto M, Uzawa J, Isono K. Epiderstatin, a new inhibitor of the mitogenic activity induced by epidermal growth factor. II. Structure elucidation. J Antibiot (Tokyo) 1989; 42:1607-9. [PMID: 2486307 DOI: 10.7164/antibiotics.42.1607] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The structure of a novel antibiotic, epiderstatin, was determined as 4-[3-((Z)-3,5-dimethyl-2-oxopiperidin-6-ylidene)-2-oxopropyl]-2, 6-piperidinedione by spectroscopic analyses of 1H NMR, 13C NMR, 1H-1H correlation spectroscopy (COSY), 13C-1H COSY, heteronuclear multiple bond correlation spectroscopy, UV and IR spectra. The antibiotic belongs to the glutarimide antibiotics, however, the characteristic feature of epiderstatin is that it has a piperidone ring instead of a cyclohexanone ring.
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Affiliation(s)
- T Sonoda
- RIKEN, The Institute of Physical and Chemical Research, Saitama, Japan
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32
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Cheng XC, Kihara T, Ying X, Uramoto M, Osada H, Kusakabe H, Wang BN, Kobayashi Y, Ko K, Yamaguchi I. A new antibiotic, tautomycetin. J Antibiot (Tokyo) 1989; 42:141-4. [PMID: 2921220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- X C Cheng
- RIKEN, Institute of Physical and Chemical Research, Saitama, Japan
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33
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Uramoto M, Itoh Y, Sekiguchi R, Shin-ya K, Kusakabe H, Isono K. A new antifungal antibiotic, cystargin: fermentation, isolation, and characterization. J Antibiot (Tokyo) 1988; 41:1763-8. [PMID: 3209469 DOI: 10.7164/antibiotics.41.1763] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A new sulfur-containing peptide antifungal antibiotic, cystargin, was isolated from the fermentation broth of a new species of genus Kitasatosporia, designated as Kitasatosporia cystarginea. On acid hydrolysis, cystargin (C60H77N19O17S6) gave equimolar glycine, proline, aspartic acid and arginine. By performic acid oxidation, cysteic acid was detected after hydrolysis. It showed a growth inhibitory activity against various phytopathogenic fungi and inhibition of beta-1,3-glucan synthetase from Saccharomyces cerevisiae.
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Affiliation(s)
- M Uramoto
- Antibiotics Laboratory, RIKEN, Institute of Physical and Chemical Research, Saitama, Japan
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Abstract
Toromycin, an antitumor, bactericidal and antiviral compound, was found to bind to DNA in such a way as to interfere with the dissociation of double helix at an elevated temperature. The antibiotic did not introduce strand scission into DNA. Single-strand-specific nuclease S1-susceptibility of negatively supercoiled DNA was not influenced by its binding. The antibiotic was shown to bind to both of the alternating purine-pyrimidine copolymers, poly(dG-dC):poly(dG-dC) and poly(dA-dT):poly(dA-dT). The unique C-glycoside molecule of toromycin interacted with single-stranded DNA, but was found to have no affinity for RNA.
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Abstract
Cell walls of the alkalophilic Bacillus strain C-125 are composed of gamma-peptidoglycan, teichuronic acid and a polymer of glucuronate and glutamate. An amino sugar that was a main component of the teichuronic acid did not correspond to any of the commercially available hexosamines. The amino sugar was purified into crystalline form from the hydrolysate of the teichuronic acid by ion-exchange chromatography and then partition chromatography on a cellulose column. The amino sugar was identified as D-fucosamine (2-amino-2,6-dideoxy-D-galactose) by 400 MHz n.m.r. spectrometric analysis, measurement of optical rotation and elemental analysis.
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36
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Isono K, Uramoto M, Kusakabe H, Kimura K, Isaki K, Nelson CC, McCloskey JA. Liposidomycins: novel nucleoside antibiotics which inhibit bacterial peptidoglycan synthesis. J Antibiot (Tokyo) 1985; 38:1617-21. [PMID: 4077739 DOI: 10.7164/antibiotics.38.1617] [Citation(s) in RCA: 106] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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37
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38
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Isono K, Uramoto M, Kusakabe H, Miyata N, Koyama T, Ubukata M, Sethi SK, McCloskey JA. Ascamycin and dealanylascamycin, nucleoside antibiotics from Streptomyces sp. J Antibiot (Tokyo) 1984; 37:670-2. [PMID: 6547710 DOI: 10.7164/antibiotics.37.670] [Citation(s) in RCA: 67] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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39
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Abstract
Chartreusin, an antitumor and antibacterial antibiotic, was found to inhibit negatively superhelical DNA-relaxation catalyzed by prokaryotic topoisomerase I and conversion of the superhelical DNA into unit length linear form catalyzed by single-strand-specific S1 nuclease. The inhibitory effect of the agent was due to the binding to DNA causing the alteration of tertiary structure. To characterize the binding specificity, we investigated the protection of DNA against cleavages by various restriction endonucleases. It was evidenced that the binding of the agent is not at random and correlates to the sequence 5'CGC 3' 3'GCG 5' on DNA stretch.
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40
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41
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42
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Uramoto M, Kobinata K, Isono K, Jenkins EE, McCloskey JA, Higashijima T, Miyazawa T. Neopolyoxins A, B, and C: new inhibitors of fungal cell wall chitin synthetase. Nucleic Acids Symp Ser 1980:s69-s71. [PMID: 6454887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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43
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Yahagi T, Sugawara H, Uramoto M, Suzuki S. Letter: A new antibiotic libramycin A. J Antibiot (Tokyo) 1974; 27:143-4. [PMID: 4826087 DOI: 10.7164/antibiotics.27.143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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44
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Uramoto M, Ōtake N, Ogawa Y, Yonehara H, Marumo F, Saito Y. The crystal and molecular structure of bundlin A p-bromophenylsulphonylhydrazone. ACTA ACUST UNITED AC 1971. [DOI: 10.1107/s056774087100195x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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46
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Uramoto M, Otake N, Yonehara H. Mannosyl glucosaminide, a new antibiotic. J Antibiot (Tokyo) 1967; 20:236-7. [PMID: 6072900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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