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Titolo:
A carotenoid pigment of the radioresistant bacterium Deinococcus radiodurans
Autore:
Saito, T; Ohyama, Y; Ide, H; Ohta, S; Yamamoto, O;
Indirizzi:
Hiroshima Univ, Radioisotope Ctr, Fac Sci, Higashihiroshima 7398526, JapanHiroshima Univ Higashihiroshima Japan 7398526 hihiroshima 7398526, Japan HiroshimanUniv, Fac Sci, Grad Dept Gene Sci, Higashihiroshima 7398526, Japa Hiroshima Univ Higashihiroshima Japan 7398526 shihiroshima 7398526, Japa Hiroshima,Univ, Fac Sci, Instrument Ctr Chem Anal, Higashihiroshima 7398526 Hiroshima Univ Higashihiroshima Japan 7398526 , Higashihiroshima 7398526
Titolo Testata:
MICROBIOS
fascicolo: 381, volume: 95, anno: 1998,
pagine: 79 - 90
SICI:
0026-2633(1998)95:381<79:ACPOTR>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Keywords:
Deinococcus radiodurans; radioresistant bacterium; carotenoid; chemical structure; antioxidizer; oxidative stress;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Saito, T Hiroshima Univ, Radioisotope Ctr, Fac Sci, Higashihiroshima 7398526, Japan Hiroshima Univ Higashihiroshima Japan 7398526 ma 7398526, Japan
Citazione:
T. Saito et al., "A carotenoid pigment of the radioresistant bacterium Deinococcus radiodurans", MICROBIOS, 95(381), 1998, pp. 79-90

Abstract

A major carotenoid pigment of the extremely radioresistant bacterium Deinococcus radiodurans was extracted and purified. The structure of the pigmentwas elucidated by various chemical tests, visible absorption spectrum, EIMS, HREIMS, H-1 NMR, C-13 NMR, DEFT, C-13-H-1 COSY, HMBC, H-1-H-1 COSY, CD spectrum, and determined to be (2R)-2,1'-dihydroxy-3',4'-didehydro-1',2'-dihydro-beta,psi-catoten-4-one. This carotenoid pigment is expected to have a potentially high antioxidation capacity since it contains two hydroxyl groups, one carbonyl group and long conjugated double bonds. The pigment is localized at the cell surface, and so it is likely to act as an antioxidizer for the lipids, proteins and polysaccharides in the cell surface to the oxidative stress caused by ionizing and UV irradiation, thus contributing to the radioresistance of this bacterium.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 13:17:56