John D. Helmann

26.4k total citations · 5 hit papers
241 papers, 21.0k citations indexed

About

John D. Helmann is a scholar working on Genetics, Molecular Biology and Ecology. According to data from OpenAlex, John D. Helmann has authored 241 papers receiving a total of 21.0k indexed citations (citations by other indexed papers that have themselves been cited), including 159 papers in Genetics, 144 papers in Molecular Biology and 71 papers in Ecology. Recurrent topics in John D. Helmann's work include Bacterial Genetics and Biotechnology (159 papers), Bacteriophages and microbial interactions (68 papers) and RNA and protein synthesis mechanisms (66 papers). John D. Helmann is often cited by papers focused on Bacterial Genetics and Biotechnology (159 papers), Bacteriophages and microbial interactions (68 papers) and RNA and protein synthesis mechanisms (66 papers). John D. Helmann collaborates with scholars based in United States, Germany and China. John D. Helmann's co-authors include Michael J. Chamberlin, Jin‐Won Lee, Ahmed Gaballa, Thorsten Mascher, Haike Antelmann, Pete Chandrangsu, Mayuree Fuangthong, Min Cao, Tao Wang and Pieter L. deHaseth and has published in prestigious journals such as Nature, Science and Cell.

In The Last Decade

John D. Helmann

237 papers receiving 20.8k citations

Hit Papers

5 papers align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

STRUCTURE AND FUNCTION OF BACTERIAL SIGMA FACTORS

1988 849 citations John D. Helmann et al. profile →
Stimulus Perception in Bacterial Signal-Transducing Histidine Kinases

2006 559 citations John D. Helmann et al. profile →
Metal homeostasis and resistance in bacteria

2017 548 citations Pete Chandrangsu, John D. Helmann et al. profile →
The extracytoplasmic function (ECF) sigma factors

2002 541 citations John D. Helmann profile →
Antagonism of Two Plant-Growth Promoting Bacillus velezensis Isolates Against Ralstonia solanacearum and Fusarium oxysporum

2018 250 citations Hualiang Pi, Pete Chandrangsu et al. Scientific Reports profile →

Peers

Countries citing papers authored by John D. Helmann

Since Specialization

Citations

This map shows the geographic impact of John D. Helmann's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John D. Helmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John D. Helmann more than expected).

Fields of papers citing papers by John D. Helmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John D. Helmann. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John D. Helmann. The network helps show where John D. Helmann may publish in the future.

Co-authorship network of co-authors of John D. Helmann

This figure shows the co-authorship network connecting the top 25 collaborators of John D. Helmann. A scholar is included among the top collaborators of John D. Helmann based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with John D. Helmann. John D. Helmann is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	The extracytoplasmic sigma factor σX supports biofilm formation and increases biocontrol efficacy in Bacillus velezensis 118 2025 ·Scientific Reports ·Yanfei Cai, (unknown), Ahmed Gaballa, Hualiang Pi, John D. Helmann	2
2	A mutation in RNA polymerase imparts resistance to β-lactams by preventing dysregulation of amino acid and nucleotide metabolism 2025 ·Cell Reports ·(unknown), John D. Helmann	0
3	The Bacillus subtilis yqgC-sodA operon protects magnesium-dependent enzymes by supporting manganese efflux 2024 ·Journal of Bacteriology ·(unknown), Vijay Soni, Miguel A. Piñeros, Yuanchan Luo, (unknown), Kyu Y. Rhee, John D. Helmann	2
4	A model industrial workhorse: Bacillus subtilis strain 168 and its genome after a quarter of a century 2023 ·Microbial Biotechnology ·Erhard Bremer, Alexandra Calteau, Antoine Danchin, Colin R. Harwood, John D. Helmann, Claudine Médigue, Bernhard Ø. Palsson, Agnieszka Sekowska, David Vallenet, Abril Zuniga, Cristal Zúñiga	18
5	A Simplified Method for CRISPR-Cas9 Engineering of Bacillus subtilis 2021 ·Microbiology Spectrum ·(unknown), (unknown), John D. Helmann	12
6	Biphasic unbinding of a metalloregulator from DNA for transcription (de)repression in Live Bacteria 2020 ·Nucleic Acids Research ·Won Jung, Kushal Sengupta, (unknown), John D. Helmann, Peng Chen	12
7	Bacillus subtilis FolE is sustained by the ZagA zinc metallochaperone and the alarmone ZTP under conditions of zinc deficiency 2019 ·Molecular Microbiology ·Pete Chandrangsu, Xiaojuan Huang, Ahmed Gaballa, John D. Helmann	53
8	Genome-Wide Characterization of the Fur Regulatory Network Reveals a Link between Catechol Degradation and Bacillibactin Metabolism in Bacillus subtilis 2018 ·mBio ·Hualiang Pi, John D. Helmann	25
9	Redox Sensing by Fe ²⁺ in Bacterial Fur Family Metalloregulators 2017 ·Antioxidants and Redox Signaling ·(unknown), John D. Helmann	63
10	Metalloregulator CueR biases RNA polymerase’s kinetic sampling of dead-end or open complex to repress or activate transcription 2015 ·Proceedings of the National Academy of Sciences ·(unknown), Chandra P. Joshi, Ahmed Gaballa, Ace George Santiago, Tai‐Yen Chen, Won Jung, John D. Helmann, Peng Chen	32
11	MntR(Rv2788): a transcriptional regulator that controls manganese homeostasis in Mycobacterium tuberculosis 2015 ·Molecular Microbiology ·Ruchi Pandey, Riccardo Russo, Saleena Ghanny, Xiaojuan Huang, John D. Helmann, G. Marcela Rodríguez	36
12	Concentration- and chromosome-organization-dependent regulator unbinding from DNA for transcription regulation in living cells 2015 ·Nature Communications ·Tai‐Yen Chen, Ace George Santiago, Won Jung, Łukasz Krzemiński, Feng Yang, (unknown), John D. Helmann, Peng Chen	78
13	DNA-Binding Properties of the Bacillus subtilis and Aeribacillus pallidus AC6 σ ^D Proteins 2010 ·Journal of Bacteriology ·Elif Sevi̇m, Ahmed Gaballa, Ali Osman Beldüz, John D. Helmann	7
14	Biosynthesis and functions of bacillithiol, a major low-molecular-weight thiol in Bacilli 2010 ·Proceedings of the National Academy of Sciences ·Ahmed Gaballa, Gerald L. Newton, Haike Antelmann, Derek Parsonage, Heather E. Upton, Mamta Rawat, Al Claiborne, Robert C. Fahey, John D. Helmann	196
15	Peroxide Stress Elicits Adaptive Changes in Bacterial Metal Ion Homeostasis 2010 ·Antioxidants and Redox Signaling ·Melinda J. Faulkner, John D. Helmann	118
16	Bacillithiol, a New Player in Bacterial Redox Homeostasis 2010 ·Antioxidants and Redox Signaling ·John D. Helmann	88
17	A two-subunit bacterial σ-factor activates transcription in Bacillus subtilis 2009 ·Proceedings of the National Academy of Sciences ·Shawn R. MacLellan, Verónica Guariglia-Oropeza, Ahmed Gaballa, John D. Helmann	13
18	Phenotypic and Transcriptomic Characterization of Bacillus subtilis Mutants with Grossly Altered Membrane Composition 2008 ·Journal of Bacteriology ·Letal I. Salzberg, John D. Helmann	80
19	The Bacillus subtilis iron-sparing response is mediated by a Fur-regulated small RNA and three small, basic proteins 2008 ·Proceedings of the National Academy of Sciences ·Ahmed Gaballa, Haike Antelmann, Claudio Aguilar, (unknown), (unknown), Gregory T. Smaldone, John D. Helmann	179
20	The OhrR repressor senses organic hydroperoxides by reversible formation of a cysteine-sulfenic acid derivative 2002 ·Proceedings of the National Academy of Sciences ·Mayuree Fuangthong, John D. Helmann	188

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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