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Title: The MerR-like protein BldC binds DNA direct repeats as cooperative multimers to regulate Streptomyces development

Abstract

Streptomycetes are notable for their complex life cycle and production of most clinically important antibiotics. A key factor that controls entry into development and the onset of antibiotic production is the 68-residue protein, BldC. BldC is a putative DNA-binding protein related to MerR regulators, but lacks coiled-coil dimerization and effector-binding domains characteristic of classical MerR proteins. Hence, the molecular function of the protein has been unclear. Here we show that BldC is indeed a DNA-binding protein and controls a regulon that includes other key developmental regulators. Intriguingly, BldC DNA-binding sites vary significantly in length. Our BldC-DNA structures explain this DNA-binding capability by revealing that BldC utilizes a DNA-binding mode distinct from MerR and other known regulators, involving asymmetric head-to-tail oligomerization on DNA direct repeats that results in dramatic DNA distortion. Notably, BldC-like proteins radiate throughout eubacteria, establishing BldC as the founding member of a new structural family of regulators.

Authors:
 [1];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [1];  [1];  [1];
  1. Duke Univ. School of Medicine, Durham, NC (United States). Dept. of Biochemistry
  2. John Innes Centre (United Kingdom). Dept. of Molecular Microbiology
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1624083
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
Science & Technology - Other Topics

Citation Formats

Schumacher, Maria A., den Hengst, Chris D., Bush, Matthew J., Le, T. B. K., Tran, Ngat T., Chandra, Govind, Zeng, Wenjie, Travis, Brady, Brennan, Richard G., and Buttner, Mark J. The MerR-like protein BldC binds DNA direct repeats as cooperative multimers to regulate Streptomyces development. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03576-3.
Schumacher, Maria A., den Hengst, Chris D., Bush, Matthew J., Le, T. B. K., Tran, Ngat T., Chandra, Govind, Zeng, Wenjie, Travis, Brady, Brennan, Richard G., & Buttner, Mark J. The MerR-like protein BldC binds DNA direct repeats as cooperative multimers to regulate Streptomyces development. United States. https://doi.org/10.1038/s41467-018-03576-3
Schumacher, Maria A., den Hengst, Chris D., Bush, Matthew J., Le, T. B. K., Tran, Ngat T., Chandra, Govind, Zeng, Wenjie, Travis, Brady, Brennan, Richard G., and Buttner, Mark J. Mon . "The MerR-like protein BldC binds DNA direct repeats as cooperative multimers to regulate Streptomyces development". United States. https://doi.org/10.1038/s41467-018-03576-3. https://www.osti.gov/servlets/purl/1624083.
@article{osti_1624083,
title = {The MerR-like protein BldC binds DNA direct repeats as cooperative multimers to regulate Streptomyces development},
author = {Schumacher, Maria A. and den Hengst, Chris D. and Bush, Matthew J. and Le, T. B. K. and Tran, Ngat T. and Chandra, Govind and Zeng, Wenjie and Travis, Brady and Brennan, Richard G. and Buttner, Mark J.},
abstractNote = {Streptomycetes are notable for their complex life cycle and production of most clinically important antibiotics. A key factor that controls entry into development and the onset of antibiotic production is the 68-residue protein, BldC. BldC is a putative DNA-binding protein related to MerR regulators, but lacks coiled-coil dimerization and effector-binding domains characteristic of classical MerR proteins. Hence, the molecular function of the protein has been unclear. Here we show that BldC is indeed a DNA-binding protein and controls a regulon that includes other key developmental regulators. Intriguingly, BldC DNA-binding sites vary significantly in length. Our BldC-DNA structures explain this DNA-binding capability by revealing that BldC utilizes a DNA-binding mode distinct from MerR and other known regulators, involving asymmetric head-to-tail oligomerization on DNA direct repeats that results in dramatic DNA distortion. Notably, BldC-like proteins radiate throughout eubacteria, establishing BldC as the founding member of a new structural family of regulators.},
doi = {10.1038/s41467-018-03576-3},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Mon Mar 19 00:00:00 EDT 2018},
month = {Mon Mar 19 00:00:00 EDT 2018}
}

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Works referencing / citing this record:

Cryo-EM structure of a type I-F CRISPR RNA guided surveillance complex bound to transposition protein TniQ
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Metal sensing and regulation of adaptive responses to manganese limitation by MtsR is critical for group A streptococcus virulence
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BldC Delays Entry into Development To Produce a Sustained Period of Vegetative Growth in Streptomyces venezuelae
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