Journal
JOURNAL OF BACTERIOLOGY
Volume 194, Issue 5, Pages 1127-1135Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.06565-11
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Funding
- NIH [5R01DE013230, 4R00DE018400, RO1-DE014757, 1R01DE020102-01]
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We have previously characterized the interactions of the response regulator ComE from Streptococcus mutans and DNA binding sites through DNase I footprinting and electrophoretic mobility shift assay analysis. Since response regulator functions are often affected by their phosphorylation state, we investigated how phosphorylation affects the biochemical function of ComE. Unlike many response regulators, we found that the phosphorylation state of ComE does not likely play a role in DNA binding affinity but rather seems to induce the formation of an oligomeric form of the protein. The role of this oligomerization state for ComE function is discussed.
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