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Averbeck, D.* ; Chandra, P.* ; Biswas, R.K.

Structural specificity in the lethal and mutagenic activity of furocoumarins in yeast cells.

Radiat. Environ. Biophys. 12, 241-252 (1975)
DOI
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
Using monofunctional (Angelicin) and bifunctional furocoumarins (Psoralen and 8 Methoxypsoralen) plus 365 nm light it is shown that both damages, the induced monoadducts and/or crosslinks in DNA, provoke lethal and mutagenic effects in haploid and diploid cells of Saccharomyces cerevisiae. Bifunctional furocoumarins are about 20 times more effective in cell killing than Angelicin. Diploid cells are always more resistant than haploid cells. Dark repair (agar holding) increases survival. This effect can be at least in part correlated to the release of bound material from DNA in dark repair conditions. Bifunctional psoralens (10 μg/ml) are at least 10-fold more effective in inducing nuclear gene back mutations (his- to HIS+) than Angelicin (10 μg/ml) plus 365 nm light or 254 nm ultraviolet light. In contrast cytoplasmic "petite" (ς-) mutations are about as frequently induced by Angelicin plus 365 nm light as by 254 nm UV light. Bifunctional furocoumarins are less effective. The frequency of cytoplasmic "petite" mutations per survivors decreases during dark repair conditions more efficiently after Angelicin than after Psoralen plus 365 nm light treatment.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 1975
HGF-Berichtsjahr 0
ISSN (print) / ISBN 0301-634X
e-ISSN 1432-2099
Quellenangaben Band: 12, Heft: 3, Seiten: 241-252 Artikelnummer: , Supplement: ,
Verlag Springer
Begutachtungsstatus Peer reviewed
Institut(e) Abteilung Biophysikalische Strahlenforschung
Scopus ID 0016710565
Erfassungsdatum 1975-08-05