skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Permeabilization of ultraviolet-irradiated chinese hamster cells with polyethylene glycol and introduction of ultraviolet endonuclease from Micrococcus luteus

Journal Article · · Mol. Cell. Biol.; (United States)
DOI:https://doi.org/10.1128/MCB.1.3.237· OSTI ID:5046684

Chinese hamster V-79 cells were made permeable by treatment with polyethylene glycol and then incubated with a Micrococcus luteus extract containing ultraviolet-specific endonuclease activity. This treatment introduced nicks in irradiated, but not in unirradiated, deoxyribonucleic acid. The nicks remained open for at least 3 h; there was no loss of endonuclease-sensitive sites, and no excision of dimers as measured by chromatography was detected. In addition, there was no increase in ultraviolet resistance in treated cells. This suggests that the absence of a significant amount of excision repair in rodent cells is due to the lack of both incision and excision capacity.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
OSTI ID:
5046684
Journal Information:
Mol. Cell. Biol.; (United States), Vol. 1:3
Country of Publication:
United States
Language:
English

Similar Records

DNA repair in V-79 cells treated with combinations of ultraviolet radiation and N-acetoxy-2-acetylaminofluorene
Journal Article · Thu Sep 01 00:00:00 EDT 1977 · Cancer Res.; (United States) · OSTI ID:5046684

Micrococcus luteus correndonucleases. II. Mechanism of action of two endonucleases specific for DNA containing pyrimidine dimers. [Micrococcus lutea; 15 J/m/sup 3/]
Journal Article · Sun Sep 25 00:00:00 EDT 1977 · J. Biol. Chem.; (United States) · OSTI ID:5046684

Modulation of the DNA scanning activity of the Micrococcus luteus UV endonuclease
Journal Article · Sun Oct 15 00:00:00 EDT 1989 · Journal of Biological Chemistry; (USA) · OSTI ID:5046684