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Cited by 262

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Nonspecific interaction of lac repressor with DNA: an association reaction driven by counterion release

DeHaseth, Pieter L., Lohman, Timothy M., Record, M. Thomas·1977·Biochemistry

Abstract

We have investigated the nonspecific interaction of lac repressor protein with DNA by a quantitative application of DNA-cellulose chromatography (deHaseth, P.L., et al. (1977), Biochemistry 16 (third of five papers in a series in this issue)). The observed association constant for the interaction, KRD obsd, is a sensitive function of ion concentrations and pH. Application of binding theory to interpret these effects gives the results that 11 +/- 2 monovalent ions are released in the interaction and two groups on repressor must be protonated for repressor to bind to DNA. We argue that much of the ion release results from the displacement of cations from the DNA, and estimate on this basis that 12 +/- 2 phosphates are involved in ionic interactions with the protein. Ion release drives the protonation reaction and the overall repressor-DNA interaction. The major role of low molecular weight ions in the repressor-DNA interaction suggests that ion concentration changes must be considered in discussing mechanisms of control of gene expression.

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Metadata

Authors
DeHaseth, P. L., Lohman, T. M., & Record, M. T.
Venue
Biochemistry
Published
1977-11-01
Volume
16
Issue
22
Pages
4783-4790
ISSN
  • 0006-2960 (ISSN-L)
  • 1520-4995
OpenAlex
W2090759101
Cited by
262
References
1
FWCI
3.88
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Nonspecific interaction of lac repressor with DNA: an association reaction driven by counterion release. https://app.cochat.ai/papers/10.1021/bi00641a004
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DeHaseth, P. L., Lohman, T. M., & Record, M. T. (1977). Nonspecific interaction of lac repressor with DNA: an association reaction driven by counterion release. Biochemistry. https://doi.org/10.1021/bi00641a004

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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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