Structure-activity analysis of microcinJ25: distinct parts of the threaded lasso molecule are responsible for interaction with bacterial RNA polymerase.

J Bacteriol

Waksman Institute for Microbiology, Department of Molecular Biology and Biochemistry, Rutgers, The State University of New Jersey, 190 Frelinghuysen Road, Piscataway, New Jersey 08854, USA.

Published: June 2005

Peptide microcin J25 (MccJ25) inhibits bacterial RNA polymerase. We show that thermolysin-cleaved MccJ25 and MccJ25 lacking amino acids 13 to 17 also inhibit transcription. Our data and structural analysis of intact and thermolysin-digested MccJ25 suggest that distinct regions of MccJ25 are involved in transcription inhibition and cell entry.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1112051PMC
http://dx.doi.org/10.1128/JB.187.11.3859-3863.2005DOI Listing

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