All Stories

  1. Manganese impairs the QoxABCD terminal oxidase leading to respiration‐associated toxicity

    Article • Molecular Microbiology, July 2021, Wiley

    John Helmann

  2. Mutations of the Bacillus subtilis YidC1 (SpoIIIJ) insertase alleviate stress associated with σM-dependent membrane protein overproduction

    Article • PLoS Genetics, October 2019, PLOS

    John Helmann

  3. Bacillus subtilis PgcA moonlights as a phosphoglucosamine mutase in support of peptidoglycan synthesis

    Article • PLoS Genetics, October 2019, PLOS

    John Helmann

  4. Bacillus subtilis FolE is sustained by the ZagA zinc metallochaperone and the alarmone ZTP under conditions of zinc deficiency

    Article • Molecular Microbiology, May 2019, Wiley

    John Helmann

  5. Where to Begin? Sigma factors and the selectivity of transcription initiation in Bacteria

    Article • Molecular Microbiology, May 2019, Wiley

    John Helmann

  6. Deciphering the essentiality and function of the anti‐σ M factors in Bacillus subtilis

    Article • Molecular Microbiology, February 2019, Wiley

    John Helmann

  7. Aspartate deficiency limits peptidoglycan synthesis and sensitizes cells to antibiotics targeting cell wall synthesis in Bacillus subtilis

    Article • Molecular Microbiology, July 2018, Wiley

    John Helmann

  8. Induction of the Spx regulon by cell wall stress reveals novel regulatory mechanisms in Bacillus subtilis

    Article • Molecular Microbiology, December 2017, Wiley

    John Helmann

  9. Bacillus subtilisMntR coordinates the transcriptional regulation of manganese uptake and efflux systems

    Article • Molecular Microbiology, November 2016, Wiley

    John Helmann

  10. Depletion of Undecaprenyl Pyrophosphate Phosphatases Disrupts Cell Envelope Biogenesis in Bacillus subtilis

    Article • Journal of Bacteriology, August 2016, ASM Journals

    John Helmann

  11. Mutations in the Primary Sigma Factor  A and Termination Factor Rho That Reduce Susceptibility to Cell Wall Antibiotics

    Article • Journal of Bacteriology, August 2014, ASM Journals

    John Helmann

  12. Regulation of Bacillus subtilis bacillithiol biosynthesis operons by Spx

    Article • Microbiology, July 2013, Society for General Microbiology

    John Helmann

  13. Reducing the Level of Undecaprenyl Pyrophosphate Synthase Has Complex Effects on Susceptibility to Cell Wall Antibiotics

    Article • Antimicrobial Agents and Chemotherapy, June 2013, ASM Journals

    John Helmann

  14. A Mutation of the RNA Polymerase β′ Subunit (rpoC) Confers Cephalosporin Resistance in Bacillus subtilis

    Article • Antimicrobial Agents and Chemotherapy, October 2012, ASM Journals

    John Helmann, Ki Hyun Nam

  15. Elemental Economy

    Article • January 2012, Elsevier

    John Helmann

  16. Transcription activation by the siderophore sensor Btr is mediated by ligand-dependent stimulation of promoter clearance

    Article • Nucleic Acids Research, December 2011, Oxford University Press (OUP)

    John Helmann

  17. Derepression of the Bacillus subtilis PerR Peroxide Stress Response Leads to Iron Deficiency

    Article • Journal of Bacteriology, December 2011, ASM Journals

    John Helmann

  18. Glutamate Dehydrogenase Affects Resistance to Cell Wall Antibiotics in Bacillus subtilis

    Article • Journal of Bacteriology, December 2011, ASM Journals

    John Helmann

  19. Bacillus subtilis σVConfers Lysozyme Resistance by Activation of Two Cell Wall Modification Pathways, Peptidoglycan O-Acetylation and d-Alanylation of Teichoic Acids

    Article • Journal of Bacteriology, September 2011, ASM Journals

    John Helmann

  20. Sequential binding and sensing of Zn(II) by Bacillus subtilis Zur

    Article • Nucleic Acids Research, August 2011, Oxford University Press (OUP)

    John Helmann

  21. Bacillithiol, a New Player in Bacterial Redox Homeostasis

    Article • Antioxidants & Redox Signaling, July 2011, Mary Ann Liebert Inc

    John Helmann

  22. Peroxide Stress Elicits Adaptive Changes in Bacterial Metal Ion Homeostasis

    Article • Antioxidants & Redox Signaling, July 2011, Mary Ann Liebert Inc

    John Helmann

  23. Reduction in Membrane Phosphatidylglycerol Content Leads to Daptomycin Resistance in Bacillus subtilis

    Article • Antimicrobial Agents and Chemotherapy, June 2011, ASM Journals

    John Helmann

  24. A σW‐dependent stress response in Bacillus subtilis that reduces membrane fluidity

    Article • Molecular Microbiology, June 2011, Wiley

    John Helmann

  25. Identification of altered function alleles that affect Bacillus subtilis PerR metal ion selectivity

    Article • Nucleic Acids Research, March 2011, Oxford University Press (OUP)

    John Helmann

  26. A two-subunit bacterial σ-factor activates transcription in Bacillus subtilis

    Article • Proceedings of the National Academy of Sciences, December 2009, Proceedings of the National Academy of Sciences

    John Helmann

  27. Contributions of Zur-Controlled Ribosomal Proteins to Growth under Zinc Starvation Conditions

    Article • Journal of Bacteriology, July 2009, ASM Journals

    John Helmann

  28. Genetic Analysis of Factors Affecting Susceptibility of Bacillus subtilis to Daptomycin

    Article • Antimicrobial Agents and Chemotherapy, January 2009, ASM Journals

    John Helmann

  29. Sigma Factors in Gene Expression

    Article • April 2001, Wiley

    John Helmann

  30. Metalloregulators: Arbiters of Metal Sufficiency

    Article • Springer Science + Business Media

    John Helmann