Macromolecular crowding allows blunt-end ligation by DNA ligases from rat liver or Escherichia coli.

  title={Macromolecular crowding allows blunt-end ligation by DNA ligases from rat liver or Escherichia coli.},
  author={Steven B. Zimmerman and Barbara H. Pheiffer},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  volume={80 19},
  • S. Zimmerman, B. H. Pheiffer
  • Published 1983
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
In the presence of high concentrations of any of several types of macromolecules, DNA ligase preparations from rat liver nuclei or from Escherichia coli actively catalyze the blunt-end ligation of DNA. This is in contrast to the lack of activity on such substrates by these enzymes under conventional assay conditions. In addition, the previously established activity of T4 DNA ligase on blunt-ended molecules is greatly increased in the presence of high concentrations of macromolecules. Because… Expand

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