2026 John D. Helmann: Microbiology Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Microbiology	103	356	323	165	142	288	33214
Genetics	100	759	715	377	351	249	30912

Research.com Recognitions

2013 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

John D. Helmann is affiliated with Cornell University in the United States. Their research primarily focuses on the fields of Biochemistry, Genetics, and Molecular Biology, with significant contributions across related subfields such as Molecular Biology, Genetics, Nutrition and Dietetics, Plant Science, and Molecular Medicine.

The scientist's work covers a range of topics within these areas, including:

Bacterial Genetics and Biotechnology
Trace Elements in Health
RNA and Protein Synthesis Mechanisms
Antibiotic Resistance in Bacteria
Chromium Effects and Bioremediation
Plant Micronutrient Interactions and Effects
Bacteriophages and Microbial Interactions

Helmann has published extensively, with recent notable papers including:

"Mini Review: Bacterial Membrane Composition and Its Modulation in Response to Stress" (2021) in Frontiers in Molecular Biosciences
"The elements of life: A biocentric tour of the periodic table" (2023) in Advances in Microbial Physiology
"A regulatory pathway that selectively up-regulates elongasome function in the absence of class A PBPs" (2020) in eLife
"A Central Role for Magnesium Homeostasis during Adaptation to Osmotic Stress" (2022) in mBio
"Mutations in rpoB That Confer Rifampicin Resistance Can Alter Levels of Peptidoglycan Precursors and Affect β-Lactam Susceptibility" (2023) in mBio

The scientist frequently publishes in certain venues, such as:

bioRxiv (Cold Spring Harbor Laboratory)
Journal of Bacteriology
mBio
Nature Communications
Microbiology Spectrum

Collaboration is an important aspect of Helmann's research, with frequent co-authors including Ankita J. Sachla, Yesha Patel, Jessica R. Willdigg, Brian M. Wendel, and Vijay Soni.

In 2013, John D. Helmann was recognized as a Fellow of the American Association for the Advancement of Science (AAAS).

Best Publications

Structure and function of bacterial sigma factors.

John D. Helmann;Michael J. Chamberlin

1341
Citations
Stimulus Perception in Bacterial Signal-Transducing Histidine Kinases

Thorsten Mascher;John D. Helmann;Gottfried Unden

901
Citations
The extracytoplasmic function (ECF) sigma factors.

John D Helmann

895
Citations
Metal homeostasis and resistance in bacteria

Pete Chandrangsu;Christopher Rensing;John D. Helmann

767
Citations
The σ70 family of sigma factors

Mark S B Paget;John D Helmann

723
Citations
The PerR transcription factor senses H2O2 by metal-catalysed histidine oxidation.

Jin-Won Lee;John D. Helmann

646
Citations
Functional specialization within the Fur family of metalloregulators

Jin-Won Lee;John D. Helmann

536
Citations
Compilation and analysis of Bacillus subtilis sigma A-dependent promoter sequences: evidence for extended contact between RNA polymerase and upstream promoter DNA.

John D. Helmann

532
Citations
Bacillus subtilis contains multiple Fur homologues: identification of the iron uptake (Fur) and peroxide regulon (PerR) repressors

Nada Bsat;Andrew Herbig;Lilliam Casillas‐Martinez;Peter Setlow

480
Citations
Thiol-Based Redox Switches and Gene Regulation

Haike Antelmann;John D. Helmann

448
Citations
Recognition of DNA by Fur: a Reinterpretation of the Fur Box Consensus Sequence

Noel Baichoo;John D. Helmann

391
Citations
Antagonism of Two Plant-Growth Promoting Bacillus velezensis Isolates Against Ralstonia solanacearum and Fusarium oxysporum

Yu Cao;Hualiang Pi;Pete Chandrangsu;Yongtao Li

376
Citations
Manganese homeostasis in Bacillus subtilis is regulated by MntR, a bifunctional regulator related to the diphtheria toxin repressor family of proteins.

Qiang Que;John D. Helmann

375
Citations
Cell wall stress responses in Bacillus subtilis: the regulatory network of the bacitracin stimulon

Thorsten Mascher;Neil G Margulis;Tao Wang;Rick W. Ye

370
Citations
Regulation of inducible peroxide stress responses.

Skorn Mongkolsuk;John D. Helmann

351
Citations
Antibiotics that inhibit cell wall biosynthesis induce expression of the Bacillus subtilis sigma(W) and sigma(M) regulons.

Min Cao;Tao Wang;Rick Ye;John D. Helmann

349
Citations
Global analysis of the Bacillus subtilis Fur regulon and the iron starvation stimulon.

Noel Baichoo;Tao Wang;Rick Ye;John D. Helmann

334
Citations
Bacillithiol is an antioxidant thiol produced in Bacilli.

Gerald L Newton;Mamta Rawat;James J La Clair;Vishnu Karthik Jothivasan

333
Citations
Identification of the Escherichia coli K-12 Nramp orthologue (MntH) as a selective divalent metal ion transporter.

Hortence Makui;Eva Roig;Stewart T. Cole;John D. Helmann

330
Citations
Structure of an OhrR-ohrA Operator Complex Reveals the DNA Binding Mechanism of the MarR Family

Minsun Hong;Mayuree Fuangthong;John D. Helmann;Richard G. Brennan

328
Citations
Global Transcriptional Response of Bacillus subtilis to Heat Shock

John D. Helmann;Ming Fang Winston Wu;Phil A. Kobel;Francisco-Javier Gamo

322
Citations
Identification of a Zinc-Specific Metalloregulatory Protein, Zur, Controlling Zinc Transport Operons in Bacillus subtilis

Ahmed Gaballa;John D. Helmann

321
Citations

Frequent Co-Authors

Haike Antelmann Freie Universität Berlin

Randall J. Olsen Houston Methodist

Michael J. Chamberlin University of California, Berkeley

Richard G. Brennan Duke University

Christopher T. Walsh Stanford University

Peng Chen Peking University

James M. Musser Houston Methodist

Michael Hecker University of Greifswald

Skorn Mongkolsuk Mahidol University

Gregory M. Cook Queensland University of Technology

External Links

Personal website of John D. Helmann

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