World's Best Scientists 2026 revealed!

D-Index & Metrics

Microbiology

D-Index
103
Citations
33214
World Ranking
356
National Ranking
165

Genetics

D-Index
100
Citations
30912
World Ranking
759
National Ranking
377

John D. Helmann publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where John D. Helmann sits on this spectrum.

55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 264 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 233 scientists 205–214 publications: 207 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55 publications 679+

This scientist: 288 publications — 75th percentile

75% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

John D. Helmann D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where John D. Helmann sits on this spectrum.

40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 111 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 122 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 93 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 103 D-Index — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

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

  • Stimulus Perception in Bacterial Signal-Transducing Histidine Kinases

    Thorsten Mascher;John D. Helmann;Gottfried Unden

  • The extracytoplasmic function (ECF) sigma factors.

    John D Helmann

  • Metal homeostasis and resistance in bacteria

    Pete Chandrangsu;Christopher Rensing;John D. Helmann

  • The σ70 family of sigma factors

    Mark S B Paget;John D Helmann

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

    Jin-Won Lee;John D. Helmann

  • Functional specialization within the Fur family of metalloregulators

    Jin-Won Lee;John D. Helmann

  • 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

  • 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

  • Thiol-Based Redox Switches and Gene Regulation

    Haike Antelmann;John D. Helmann

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

    Noel Baichoo;John D. Helmann

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

    Yu Cao;Hualiang Pi;Pete Chandrangsu;Yongtao Li

  • 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

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

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

  • Regulation of inducible peroxide stress responses.

    Skorn Mongkolsuk;John D. Helmann

  • 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

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

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

  • Bacillithiol is an antioxidant thiol produced in Bacilli.

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

  • 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

  • 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

  • Global Transcriptional Response of Bacillus subtilis to Heat Shock

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

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

    Ahmed Gaballa;John D. Helmann

Frequent Co-Authors

Haike Antelmann
Haike Antelmann Freie Universität Berlin
Randall J. Olsen
Randall J. Olsen Houston Methodist
Michael J. Chamberlin
Michael J. Chamberlin University of California, Berkeley
Richard G. Brennan
Richard G. Brennan Duke University
Christopher T. Walsh
Christopher T. Walsh Stanford University
Peng Chen
Peng Chen Peking University
James M. Musser
James M. Musser Houston Methodist
Michael Hecker
Michael Hecker University of Greifswald
Skorn Mongkolsuk
Skorn Mongkolsuk Mahidol University
Gregory M. Cook
Gregory M. Cook Queensland University of Technology

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