Abstract
An exonuclease which specifically degrades double-standard DNA has been isolated from rabbit tissues. The enzyme has an approximate molecular weight of 42,000, requires a divalent metal ion as cofactor, and attacks DNA at the 5′-terminal ends, thereby liberating 5′-mononucleotides. It degrades several synthetic polydeoxynucleotides of single repeating base sequences more rapidly than DNA from natural sources. The specificity of this mammalian enzyme resembles that of several microbial enzymes (phage λ exonuclease and DNA polymerase) which appear to be required for repair and recombination of DNA.
Dates
Type | When |
---|---|
Created | 19 years, 3 months ago (May 31, 2006, 2:11 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 10:18 a.m.) |
Indexed | 1 year, 1 month ago (July 22, 2024, 8:10 p.m.) |
Issued | 56 years, 7 months ago (Feb. 1, 1969) |
Published | 56 years, 7 months ago (Feb. 1, 1969) |
Published Online | 56 years, 7 months ago (Feb. 1, 1969) |
Published Print | 56 years, 7 months ago (Feb. 1, 1969) |
@article{Lindahl_1969, title={DEOXYRIBONUCLEASE IV: A NEW EXONUCLEASE FROM MAMMALIAN TISSUES}, volume={62}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.62.2.597}, DOI={10.1073/pnas.62.2.597}, number={2}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Lindahl, Tomas and Gally, Joseph A. and Edelman, Gerald M.}, year={1969}, month=feb, pages={597–603} }