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Cited by 211

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Nucleotide insertion kinetics opposite abasic lesions in DNA.

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Randall, S K, Eritja, R, Kaplan, B E, Petruska, J, Goodman, M F·1987·Journal of Biological Chemistry

Abstract

A gel assay is introduced to measure DNA polymerase insertion kinetics at single sites along a DNA template strand. The assay is used to analyze the kinetics of inserting deoxynucleotides opposite a synthetic abasic (apurinic/apyrimidinic) lesions using Drosophila DNA polymerase alpha. The location of the abasic lesion next to different nearest-neighbor bases allows the effects of base stacking on the specificity of insertion to be evaluated. The specificity of nucleotide insertion, Vmax/Km, is 6-11 times greater for A over G and about 20-50 times greater for A over C and T. The insertion specificity at the abasic lesion appears to depend more on differences in Vmax than Km. Apparent Michaelis constants for inserting A and G deoxynucleotides are similar to within about a factor of 2. The insertion of A or G occurs most efficiently at the abasic lesion when T is the 5'-nearest neighbor on the primer strand and least efficiently when G is the 5'-nearest neighbor. The presence of different base stacking partners adjacent to the site of insertion has up to a 4-fold effect on specificity.

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Metadata

Authors
Randall, S. K., Eritja, R., Kaplan, B. E., Petruska, J., & Goodman, M. F.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1987-05
Volume
262
Issue
14
Pages
6864-6870
ISSN
0021-9258 (ISSN-L)
OpenAlex
W1497215682
Cited by
211
References
1
FWCI
4.49
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Nucleotide insertion kinetics opposite abasic lesions in DNA. https://app.cochat.ai/papers/10.1016/s0021-9258(18)48324-x
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Randall, S. K., Eritja, R., Kaplan, B. E., Petruska, J., & Goodman, M. F. (1987). Nucleotide insertion kinetics opposite abasic lesions in DNA. Journal of Biological Chemistry. https://doi.org/10.1016/s0021-9258(18)48324-x

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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