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Absence of p350 subunit of DNA-activated protein kinase from a radiosensitive human cell line

  • Susan P. Lees-Miller
  • , Roseline Godbout
  • , Doug W. Chan
  • , Michael Weinfeld
  • , Rufus S. Day
  • , Geraldine M. Barron
  • , Joan Allalunis-Turner

Research output: Contribution to journalArticlepeer-review

Abstract

The radiosensitive rodent mutant cell line xrs-5 is defective in DNA double-strand break repair and lacks the Ku component of the DNA-activated protein kinase, DNA-PK. Here radiosensitive human cell lines were analyzed for DNA-PK activity and for the presence of related proteins. The radiosensitive human malignant glioma M059J cell line was found to be defective in DNA double-strand break repair, but fails to express the p350 subunit of DNA-PK. These results suggest that DNA-PK kinase activity is involved in DNA double-strand break repair.

Original languageEnglish (US)
Pages (from-to)1183-1185
Number of pages3
JournalScience
Volume267
Issue number5201
StatePublished - Feb 24 1995
Externally publishedYes

ASJC Scopus subject areas

  • General

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