World's Best Scientists 2026 revealed!

D-Index & Metrics

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

John D. Helmann publications per year

The chart shows the history of publications by John D. Helmann between 1987 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John D. Helmann published across 39 years, from 1987 to 2025, averaging 7.9 papers a year. Output peaked at 19 publications in 2002. 22 of the 307 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1987 to 2025. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 2002. 1987: 1 publication 1988: 4 publications 1989: 3 publications 1990: 4 publications 1991: 1 publication 1992: 2 publications 1993: 3 publications 1994: 8 publications 1995: 8 publications 1996: 3 publications 1997: 5 publications 1998: 6 publications 1999: 6 publications 2000: 2 publications 2001: 6 publications 2002: 19 publications 2003: 16 publications 2004: 4 publications 2005: 9 publications 2006: 12 publications 2007: 14 publications 2008: 10 publications 2009: 14 publications 2010: 4 publications 2011: 15 publications 2012: 12 publications 2013: 14 publications 2014: 8 publications 2015: 9 publications 2016: 6 publications 2017: 12 publications 2018: 7 publications 2019: 11 publications 2020: 7 publications 2021: 8 publications 2022: 4 publications 2023: 8 publications 2024: 9 publications 2025: 13 publications
1987 2025

307 publications in total across all disciplines

View publications per year as a table
John D. Helmann: publications per year, 1987 to 2025
Year Publications
1987 1
1988 4
1989 3
1990 4
1991 1
1992 2
1993 3
1994 8
1995 8
1996 3
1997 5
1998 6
1999 6
2000 2
2001 6
2002 19
2003 16
2004 4
2005 9
2006 12
2007 14
2008 10
2009 14
2010 4
2011 15
2012 12
2013 14
2014 8
2015 9
2016 6
2017 12
2018 7
2019 11
2020 7
2021 8
2022 4
2023 8
2024 9
2025 13
Total 307
Download as CSV

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.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 285–294 publications, is where this scientist sits. 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: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 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
55–64 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.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115 288
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99
Download as CSV

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.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 103 D-Index, is where this scientist sits. 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: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 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: 94 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.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17 103
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
Download as CSV

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

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Pursuing a degree in Genetics can open doors to various interdisciplinary career opportunities. Many genetics graduates choose to explore paths in healthcare, research, and specialized nursing fields. Today, online education offers a flexible way to expand your qualifications and skills while balancing work or other commitments.

Those interested in advanced clinical roles might consider online msn fnp programs, where you gain credentials as a family nurse practitioner. If you are just starting your nursing journey, looking at an online nursing degree can provide a solid foundation in patient care and clinical practice.

For nurses aiming to reach the highest levels in healthcare leadership and research, the cheapest dnp programs offer an accessible route to earning a Doctor of Nursing Practice. Additionally, registered nurses seeking to expand their opportunities can benefit from the cheapest rn to bsn programs, which can be completed online affordably and efficiently.

Combining your genetics background with advanced nursing qualifications can lead to specialized and high-demand roles in research, diagnostics, genomics counseling, and healthcare innovation.

Best Scientists Citing John D. Helmann

Trending Scientists

Recently Published Articles