Výsledky vyhledávání - "Blepharismin"

Main photophysical properties of oxyblepharismin

Autor: Ranieri Bizzarri, Riccardo Nifosì, Francesco Ghetti, Barbara Storti, Giovanni Checcucci

Publikováno v: Biophysical chemistry
229 (2017): 5–10. doi:10.1016/j.bpc.2017.05.008
info:cnr-pdr/source/autori:Storti B.; Checcucci G.; Ghetti F.; Nifosi R.; Bizzarri R./titolo:Main photophysical properties of oxyblepharismin/doi:10.1016%2Fj.bpc.2017.05.008/rivista:Biophysical chemistry (Print)/anno:2017/pagina_da:5/pagina_a:10/intervallo_pagine:5–10/volume:229

Oxyblepharismin is the photo-oxidized form of blepharismin, the chromophore responsible for the photophobic response of heterotrich ciliate Blepharisma japonicum, and represents a nice model for the study of photo-transduction. In this work, we focus

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::79ab4d61533b3f3ad9478a3627c76cfe
https://pubmed.ncbi.nlm.nih.gov/28558911

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Assignment of 13C NMR spectrum for blepharismin C based on biosynthetic studies

Autor: Yoshinosuke Usuki, Yoshiyuki Uruma, Hideo Iio, Kei Sakamoto, Matsumi Doe, Kohei Takumi

Publikováno v: Tetrahedron. 63:5548-5553

Blepharismins, toxic pigments of the ciliate Blepharisma japonicum, are polycyclic ring-condensed compounds. Assignment of 13C NMR signals for blepharismin C, a major constituent of blepharismins, was achieved by analyses of the HMQC, HMBC, and INADE

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::55ae614de93cb2a1587cd23d41c27c7c
https://doi.org/10.1016/j.tet.2007.04.015

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Blepharismins, produced by the protozoan, Blepharisma japonicum , form ion-permeable channels in planar lipid bilayer membranes

Autor: Akemi Kida, Yoshinori Muto, Yutaka Kirino, Tatsuomi Matsuoka, Yukio Okano

Publikováno v: FEBS Letters. 508:423-426

Blepharismins are polycyclic quinones found in the pigment granules of the ciliated protozoan, Blepharisma. Exposure to purified blepharismins results in lethal damage to several other ciliates. We here report that, at cytotoxic concentrations, bleph

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1c78c353a8aa14aecb90b5315386fcb
https://doi.org/10.1016/s0014-5793(01)03110-6

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On the structure of oxyblepharismin and its formation from blepharismin

Autor: Gerhard Höfle, I. Klein, Silke Pohlan, Lothar Jaenicke, Dietrich Spitzner, Dieter Ammermann

Publikováno v: Tetrahedron Letters. 39:4003-4006

The blepharismins ( 1 ) from Blepharisma japonicum give the corresponding oxyblepharismins ( 2 ) on irradiation in vitro and in vivo . The chemical structures of these compounds are elucidated and a mechanism is given for this unusual transformation.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::036b891f9e1458bfe42324255e9fd5db
https://doi.org/10.1016/s0040-4039(98)00712-6

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Blepharismin 1-5, novel photoreceptor from the unicellular organism Blepharisma japonicum

Autor: Kozo Utsumi, Takaharu Tanaka, Mitsuru Maeda, Tatsuomi Matsuoka, Yoji Kato, Hiyoshizo Kotsuki, Hideo Naoki

Publikováno v: Tetrahedron Letters. 38:7411-7414

The structures of new photoreceptor molecules mediating the photobehavior of the unicellular organism, Blepharisma japonicum , were determined spectroscopically. These molecules had a 4-hydroxyphenyl-11H-dibenzo[a,o]cyclohepta[pqr]perylene moiety as

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3f2848e84b8cd189d66da84e67225990
https://doi.org/10.1016/s0040-4039(97)01737-1

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Localization of Blepharismin Photosensors and Identification of a Photoreceptor Complex Mediating the Step-up Photophobic Response of the Unicellular Organism, Blepharisma

Autor: Takaharu Tanaka, Tatsuomi Matsuoka, Hiyoshizo Kotsuki, Hideo Naoki, Mie Sato, Mitsuru Maeda

Publikováno v: Photochemistry and Photobiology. 65:915-921

— Photosensitivity for the step-up photophobic response of Blepharisma is localized in the anterior 1/5 of the cell body. Blepharismin pigment, which is believed to be a photoreceptor pigment mediating the step-up photophobic response of the cells,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c7f66c48971bb987c1f3b6176f37739
https://doi.org/10.1111/j.1751-1097.1997.tb01943.x

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In vivo spectroscopic study of photoreceptor pigments of Blepharisma japonicum red and blue cells

Autor: Rinaldo Cubeddu, Francesco Lenci, Francesco Ghetti, Gianluca Valentini, Nicola Angelini, Paola Taroni

Publikováno v: Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1231(3):247-254

In the coloured ciliate Blepharisma japonicum , step-up photophobic responses are triggered by the endogenous pigment blepharismin. Blepharismin, red in dark-grown cells, is intracellularly photooxidized into a blue form (oxyblepharismin), still acti

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