Study of oxidative DNA damage in TK6 human lymphoblastoid cells by use of the thymidine kinase gene-mutation assay and the in vitro modified comet assay: Determination of No-Observed-Genotoxic-Effect-Levels

Author(s):  
Anne Platel ◽  
Fabrice Nesslany ◽  
Véronique Gervais ◽  
Nancy Claude ◽  
Daniel Marzin
2000 ◽  
Vol 44 (3) ◽  
pp. 787-789 ◽  
Author(s):  
C. A. Franke ◽  
T. M. Bolman ◽  
S. A. Ottum ◽  
K. F. Jones ◽  
D. E. Hruby

ABSTRACT Mutants of Streptococcus gordonii resistant to 5-fluorodeoxyuridine (FUdRr) were isolated. Each strain contained a point mutation resulting in the premature termination of the thymidine kinase (TK) open reading frame (tdk). In vitro translation of the mutant tdkcoding regions resulted in synthesis of truncated TK polypeptides deficient in TK activity.


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