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

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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 Advances in microbial physiology 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 →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author						Papers	Cites
John D. Helmann	12.5k	8.7k	4.5k	3.2k	2.4k	241	21.0k
Gisela Storz	21.6k 1.7×	9.2k 1.1×	5.6k 1.3×	1.3k 0.4×	2.6k 1.1×	148	28.2k
Barry L. Wanner	19.5k 1.6×	13.3k 1.5×	4.9k 1.1×	951 0.3×	2.1k 0.9×	111	29.5k
Ian T. Paulsen	11.5k 0.9×	3.7k 0.4×	4.6k 1.0×	899 0.3×	2.8k 1.2×	312	22.7k
Christopher F. Higgins	12.7k 1.0×	6.6k 0.8×	2.8k 0.6×	1.3k 0.4×	1.7k 0.7×	166	22.1k
Jeffrey H Miller	30.8k 2.5×	17.7k 2.0×	6.5k 1.4×	922 0.3×	5.2k 2.2×	180	41.6k
Arnold J. M. Driessen	17.6k 1.4×	8.2k 0.9×	3.9k 0.9×	1.3k 0.4×	1.5k 0.6×	451	24.5k
Michael Hecker	16.9k 1.4×	9.3k 1.1×	5.4k 1.2×	589 0.2×	1.9k 0.8×	463	24.6k
Christian Cambillau	11.5k 0.9×	3.0k 0.3×	3.6k 0.8×	680 0.2×	1.2k 0.5×	347	20.0k
Kirill A. Datsenko	14.6k 1.2×	9.8k 1.1×	3.5k 0.8×	663 0.2×	1.0k 0.4×	38	21.2k
Eduardo A. Groisman	9.0k 0.7×	7.0k 0.8×	3.9k 0.9×	1.3k 0.4×	1.6k 0.7×	195	20.1k

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

Cai, Yanfei, et al.. (2025). The extracytoplasmic sigma factor σX supports biofilm formation and increases biocontrol efficacy in Bacillus velezensis 118. Scientific Reports. 15(1). 5315–5315. 2 indexed citations

Helmann, John D., et al.. (2025). A mutation in RNA polymerase imparts resistance to β-lactams by preventing dysregulation of amino acid and nucleotide metabolism. Cell Reports. 44(2). 115268–115268.

Soni, Vijay, et al.. (2024). The Bacillus subtilis yqgC-sodA operon protects magnesium-dependent enzymes by supporting manganese efflux. Journal of Bacteriology. 206(6). e0005224–e0005224. 2 indexed citations

Bremer, Erhard, Alexandra Calteau, Antoine Danchin, et al.. (2023). A model industrial workhorse: Bacillus subtilis strain 168 and its genome after a quarter of a century. Microbial Biotechnology. 16(6). 1203–1231. 18 indexed citations

Helmann, John D., et al.. (2021). A Simplified Method for CRISPR-Cas9 Engineering of Bacillus subtilis. Microbiology Spectrum. 9(2). e0075421–e0075421. 12 indexed citations

Jung, Won, et al.. (2020). Biphasic unbinding of a metalloregulator from DNA for transcription (de)repression in Live Bacteria. Nucleic Acids Research. 48(5). 2199–2208. 12 indexed citations

Helmann, John D., et al.. (2020). A regulatory pathway that selectively up-regulates elongasome function in the absence of class A PBPs. eLife. 9. 28 indexed citations

Chandrangsu, Pete, Xiaojuan Huang, Ahmed Gaballa, & John D. Helmann. (2019). Bacillus subtilis FolE is sustained by the ZagA zinc metallochaperone and the alarmone ZTP under conditions of zinc deficiency. Molecular Microbiology. 112(3). 751–765. 53 indexed citations

Pi, Hualiang & John D. Helmann. (2018). Genome-Wide Characterization of the Fur Regulatory Network Reveals a Link between Catechol Degradation and Bacillibactin Metabolism in Bacillus subtilis. mBio. 9(5). 25 indexed citations

10.

Joshi, Chandra P., Ahmed Gaballa, Ace George Santiago, et al.. (2015). Metalloregulator CueR biases RNA polymerase’s kinetic sampling of dead-end or open complex to repress or activate transcription. Proceedings of the National Academy of Sciences. 112(44). 13467–13472. 32 indexed citations

11.

Pandey, Ruchi, Riccardo Russo, Saleena Ghanny, et al.. (2015). MntR(Rv2788): a transcriptional regulator that controls manganese homeostasis in Mycobacterium tuberculosis. Molecular Microbiology. 98(6). 1168–1183. 36 indexed citations

12.

Merchant, Sabeeha & John D. Helmann. (2012). Elemental Economy. Advances in microbial physiology. 60. 91–210. 178 indexed citations

13.

Luo, Yun & John D. Helmann. (2011). Analysis of the role ofBacillus subtilisσ^Min β‐lactam resistance reveals an essential role for c‐di‐AMP in peptidoglycan homeostasis. Molecular Microbiology. 83(3). 623–639. 198 indexed citations

14.

Sevi̇m, Elif, Ahmed Gaballa, Ali Osman Beldüz, & John D. Helmann. (2010). DNA-Binding Properties of the Bacillus subtilis and Aeribacillus pallidus AC6 σ ^D Proteins. Journal of Bacteriology. 193(2). 575–579. 7 indexed citations

15.

Gaballa, Ahmed, Gerald L. Newton, Haike Antelmann, et al.. (2010). Biosynthesis and functions of bacillithiol, a major low-molecular-weight thiol in Bacilli. Proceedings of the National Academy of Sciences. 107(14). 6482–6486. 196 indexed citations

16.

MacLellan, Shawn R., Verónica Guariglia-Oropeza, Ahmed Gaballa, & John D. Helmann. (2009). A two-subunit bacterial σ-factor activates transcription in Bacillus subtilis. Proceedings of the National Academy of Sciences. 106(50). 21323–21328. 13 indexed citations

17.

Gaballa, Ahmed, et al.. (2008). The Bacillus subtilis iron-sparing response is mediated by a Fur-regulated small RNA and three small, basic proteins. Proceedings of the National Academy of Sciences. 105(33). 11927–11932. 179 indexed citations

18.

Salzberg, Letal I. & John D. Helmann. (2008). Phenotypic and Transcriptomic Characterization of Bacillus subtilis Mutants with Grossly Altered Membrane Composition. Journal of Bacteriology. 190(23). 7797–7807. 80 indexed citations

19.

Helmann, John D., et al.. (2003). DNA-Binding and Oligomerization Studies of the Manganese(II) Metalloregulatory Protein MntR from Bacillus subtilis. Biochemistry. 42(43). 12634–12642. 46 indexed citations

20.

Fuangthong, Mayuree & John D. Helmann. (2002). The OhrR repressor senses organic hydroperoxides by reversible formation of a cysteine-sulfenic acid derivative. Proceedings of the National Academy of Sciences. 99(10). 6690–6695. 188 indexed citations

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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