Výsledky vyhledávání - "Ichiro Muramatsu"

Properties of synthetic analogs of gramicidin S containing L-serine or L-glutamic acid residue in place of L-ornithine residue

Autor: Makoto Tamaki, Sadatoshi Akabori, Ichiro Muramatsu

Publikováno v: International Journal of Peptide and Protein Research. 47:369-375

In order to investigate the biological role of the δ-amino groups of the Orn residue in gramicidin S, the four analogs, [Ser2]-, [Ser2,2′]-, [Glu2]- and [Glu2,2′]-gramicidin S were synthesized by a solution method. Except for the last one, these

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4261efd85641797d2f7c450c3bc9ea0
https://doi.org/10.1111/j.1399-3011.1996.tb01086.x

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Solvent-Dependent Conformations of Cyclic Tetrapeptide. II

Autor: Tomomi Saeki, Sadatoshi Akabori, Makoto Tamaki, Ichiro Muramatsu, Mikihoro Yabu, Ayako Kaneko

Publikováno v: Bulletin of the Chemical Society of Japan. 72:733-739

The solvent-dependent conformations of cyclo(–δ-Ava–L-Pro–)2 were characterized by means of the 1H and 13H NMR, CD, and IR spectra. CD results in CH2Cl2, CH3CN, CH3OH, and H2O indicated that the change in polarity of the solvent induces a reve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1cf86b403e059c4ab16f82000654d46f
https://doi.org/10.1246/bcsj.72.733

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Conformation of a cyclic tetrapeptide containing two proline residues

Autor: Ichiro Muramatsu, Makoto Tamaki, Sadatoshi Akabori

Publikováno v: Biopolymers. 39:129-132

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::deac1bd01dafba739ae3532bac1e5852
https://doi.org/10.1002/(sici)1097-0282(199608)39:2<129::aid-bip1>3.0.co

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Relationship between the Cyclization and Conformation of Pentapeptide Active Esters Related to Gramicidin S Having No Protecting Group on the Side Chain of the Ornithine Residue

Autor: Makoto Tamaki, Sadatoshi Akabori, Ichiro Muramatsu, Seiji Komiya

Publikováno v: Bulletin of the Chemical Society of Japan. 70:899-904

To investigate the contribution of the D-Phe–Pro–Val sequence in the direct formation of gramicidin S (GS) by the dimerization–cyclization of pentapeptide-active esters having no protecting group on the side chain of the Orn residue, the cycliz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1924ea78d9b0d80d6bd7c414fd13a5a6
https://doi.org/10.1246/bcsj.70.899

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Solvent-dependent conformations of a cyclic tetrapeptide

Autor: Eiji Watanabe, Seiji Komiya, Makoto Tamaki, Mikihiro Yabu, Sadatoshi Akabori, Ichiro Muramatsu

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :3497-3500

The conformations of cyclo(-γ-Abu-L-Pro-)2 in several solvents have been characterized by means of 1H and 13C NMR, CD and IR spectra. CD results indicate that the change in polarity of the solvent induces an inversion of the conformation, revealed b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0939d87d5ef9281eb89cd3be5074a860
https://doi.org/10.1039/a704476c

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Biomimetic synthesis of a peptide antibiotic, gratisin

Autor: Sadatoshi Akabori, Seiji Komiya, Ichiro Muramatsu, Makoto Tamaki

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :2045-2050

Recently, we reported the direct formation of a peptide antibiotic, gramicidin S (GS), cyclo(-D-Phe-Pro-Val-Orn-Leu-)2, by the dimerization–cyclization of pentapeptide active esters, D-Phe-Pro-Val-Orn-Leu-ONSu (-ONSu: succinimide ester), having the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0a336e8d15078c56d0ade058cc7f4b85
https://doi.org/10.1039/a701537b

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Biomimetic synthesis of gramicidin S. Direct formation of the antibiotic from pentapeptide active esters having no protecting group on the side chain of the Orn residue

Autor: Makoto Tamaki, Sadatoshi Akabori, Ichiro Muramatsu

Publikováno v: Journal of the American Chemical Society. 115:10492-10496

The direct formation of gramicidin S (GS) by the dimerization-cyclization of pentapeptide active esters having no protecting group on the side chain of the Orn residue was examined. Among the five succinimide esters (-ONSu) carrying the Val, Orn, Leu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dbb12df5fff02abdda5ddab0418bf08a
https://doi.org/10.1021/ja00076a005

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Correlation between thermal dissociation and chemical structure of blocked isocyanates

Autor: Mitsuo Kase, Yoichi Tanimoto, Ichiro Muramatsu, Noboru Okoshi

Publikováno v: Progress in Organic Coatings. 22:279-286

Thermal dissociation of blocked aliphatic isocyanates was investigated. It was found that the degree of dissociation is much affected by the structure of the isocyanates and blocking agents. These results were able to be related to the electron densi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::447f77bf66f943f3da47c46a9aa7a302
https://doi.org/10.1016/0033-0655(93)80030-e

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