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Different base/base mispairs are corrected with different efficiencies and specificities in monkey kidney cells


Brown, T C; Jiricny, J (1988). Different base/base mispairs are corrected with different efficiencies and specificities in monkey kidney cells. Cell, 54(5):705-711.

Abstract

Mismatches arise during recombination, as errors of DNA replication, and from deamination of 5-methylcytosine to thymine. We determined the efficiency and specificity of mismatch correction in simian cells. Analysis of plaques, obtained after transfection with SV40 DNA molecules harboring a single mispair in a defined orientation within the intron of the large T antigen gene, revealed that all types of base/base mispairs were corrected, albeit with different efficiencies and specificities. Heterogeneous mispairs G/T, A/C, C/T, and A/G, corrected with 96%, 78%, 72%, and 39% efficiencies, respectively, tended to be corrected to G/C. Homogeneous mispairs G/C, C/C, A/A, and T/T were corrected with 92%, 66%, 58%, and 39% efficiencies, respectively, and repair bias was influenced by mismatch flanking sequences.

Abstract

Mismatches arise during recombination, as errors of DNA replication, and from deamination of 5-methylcytosine to thymine. We determined the efficiency and specificity of mismatch correction in simian cells. Analysis of plaques, obtained after transfection with SV40 DNA molecules harboring a single mispair in a defined orientation within the intron of the large T antigen gene, revealed that all types of base/base mispairs were corrected, albeit with different efficiencies and specificities. Heterogeneous mispairs G/T, A/C, C/T, and A/G, corrected with 96%, 78%, 72%, and 39% efficiencies, respectively, tended to be corrected to G/C. Homogeneous mispairs G/C, C/C, A/A, and T/T were corrected with 92%, 66%, 58%, and 39% efficiencies, respectively, and repair bias was influenced by mismatch flanking sequences.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Molecular Cancer Research
07 Faculty of Science > Institute of Molecular Cancer Research
Dewey Decimal Classification:570 Life sciences; biology
Language:English
Date:1988
Deposited On:09 Jul 2010 08:55
Last Modified:05 Apr 2016 14:09
Publisher:Elsevier
ISSN:0092-8674
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/S0092-8674(88)80015-1
PubMed ID:2842064

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