Peter B. O’Connor

8.2k citations

177 papers · 7.0k · 1 hit paper · h-index 47

Impact in

Spectroscopy top 0.05%
- Mass Spectrometry Techniques and Applications
- Analytical Chemistry and Chromatography
- Advanced Proteomics Techniques and Applications
Molecular Biology top 2%
- Metabolomics and Mass Spectrometry Studies
- Glycosylation and Glycoproteins Research
- Protein purification and stability

Papers in

Spectroscopy 131
- Mass Spectrometry Techniques and Applications 130
- Analytical Chemistry and Chromatography 56
- Advanced Proteomics Techniques and Applications 40
Computational Mechanics 30
- Ion-surface interactions and analysis 29

Co-authors: Catherine E. Costello (24 shared papers)Fred W. McLafferty (11 shared papers)Cheng Ting Lin (18 shared papers)Jason J. Cournoyer (11 shared papers)Daniel P. Little (6 shared papers)Mark P. Barrow (52 shared papers)Michael W. Senko (3 shared papers)J. Paul Speir (3 shared papers)
Journals: Journal of the American Society for Mass Spectrometry (56 papers)Analytical Chemistry (45 papers)Rapid Communications in Mass Spectrometry (11 papers)Chemical Communications (4 papers)Protein Science (4 papers)
Partner nations: United Kingdom United States Germany

In The Last Decade

Peter B. O’Connor

177 papers receiving 6.8k citations

Peter B. O’Connor's Hit Papers

align trajectories log scale

Infrared Multiphoton Dissociation of Large Multiply Charged Ions for Biomolecule Sequencing 1994 · 676 citations

What are hit papers?

Paper score: A paper's citations measured against the top-1% bar of its own field and year: the square root of citations ÷ bar, so 1 means right at the bar and 2 means four times its citations. The bar blends the citation counts that enter the top 1% of the paper's subfields in its year (weighted 89.5%), of those subfields over all years (0.5%) and of its year across all fields (10%); a subfield and year with fewer than 400 papers takes its year's bar. Papers from 2026 are not scored yet: in an unfinished year, when a paper appeared matters more than how it is cited.

Hit paper: A paper cited at least 1.5× the top-1% bar of its field and year: a paper score of at least √1.5.

1994 Analytical Chemistry

Peers

Countries citing papers authored by Peter B. O’Connor

Since Specialization

Citations

This map shows the geographic impact of Peter B. O’Connor'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 Peter B. O’Connor with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Peter B. O’Connor more than expected).

Fields of papers citing papers by Peter B. O’Connor

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Peter B. O’Connor. 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 Peter B. O’Connor. The network helps show where Peter B. O’Connor may publish in the future.

Co-authors

The 25 scholars most cited alongside Peter B. O’Connor, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Peter B. O’Connor Line = papers co-authored together Peter B. O’Connor links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Showing the 20 most-cited of 177 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Infrared Multiphoton Dissociation of Large Multiply Charged Ions for Biomolecule Sequencing Analytical Chemistry ·Daniel P. Little, J. Paul Speir, Michael W. Senko, Peter B. O’Connor, Fred W. McLafferty Hit paper breakdown →	1994	676
2	T Cell Activation by Lipopeptide Antigens Science ·David Branch Moody, David C. Young, Tan‐Yun Cheng, Jean‐Pierre Rosat, Carme Roura‐Mir, Peter B. O’Connor, Dirk M. Zajonc, Andrew J. Walz	2004	227
3	Gas-phase folding and unfolding of cytochrome c cations. Proceedings of the National Academy of Sciences ·Troy D. Wood, Russell A. Chorush, Francis M. Wampler, Damon P. Little, Peter B. O’Connor, Fred W. McLafferty	1995	218
4	Electron Capture Dissociation Initiates a Free Radical Reaction Cascade Journal of the American Chemical Society ·Nancy Leymarie, Catherine E. Costello, Peter B. O’Connor	2003	200
5	Sequence tag identification of intact proteins by matching tanden mass spectral data against sequence data bases. Proceedings of the National Academy of Sciences ·Ejvind Mørtz, Peter B. O’Connor, Peter Roepstorff, Neil L. Kelleher, Troy D. Wood, Fred W. McLafferty, Matthias Mann	1996	196
6	Thermal stability of indium nitride at elevated temperatures and nitrogen pressures Materials Research Bulletin ·John B. MacChesney, Paul M. Bridenbaugh, Peter B. O’Connor	1970	191
7	Deamidation: Differentiation of aspartyl from isoaspartyl products in peptides by electron capture dissociation Protein Science ·Jason J. Cournoyer, Jason L. Pittman, Vera B. Ivleva, Eric Fallows, Lucy A. Waskell, Catherine E. Costello, Peter B. O’Connor	2005	140
8	Organoiridium Photosensitizers Induce Specific Oxidative Attack on Proteins within Cancer Cells Angewandte Chemie International Edition ·Pingyu Zhang, Cookson K. C. Chiu, Huaiyi Huang, Yuko P. Y. Lam, Abraha Habtemariam, Thomas Malcomson, Martin J. Paterson, Guy J. Clarkson	2017	134
9	Long-lived electron capture dissociation product ions experience radical migration via hydrogen abstraction Journal of the American Society for Mass Spectrometry ·Peter B. O’Connor, Cheng Ting Lin, Jason J. Cournoyer, Jason L. Pittman, Marina Belyayev, Bogdan Budnik	2006	113
10	Differentiation of aspartic and isoaspartic acids using electron transfer dissociation Journal of the American Society for Mass Spectrometry ·Peter B. O’Connor, Jason J. Cournoyer, Sharon J. Pitteri, Paul A. Chrisman, Scott A. McLuckey	2005	111
11	Top or Middle? Up or Down? Toward a Standard Lexicon for Protein Top-Down and Allied Mass Spectrometry Approaches Journal of the American Society for Mass Spectrometry ·Frederik Lermyte, Yury O. Tsybin, Peter B. O’Connor, Joseph A. Loo	2019	110
12	A high pressure matrix‐assisted laser desorption/ionization Fourier transform mass spectrometry ion source for thermal stabilization of labile biomolecules Rapid Communications in Mass Spectrometry ·Peter B. O’Connor, Catherine E. Costello	2001	110
13	193 nm photodissociation of larger multiply-charged biomolecules International Journal of Mass Spectrometry and Ion Processes ·Ziqiang Guan, Neil L. Kelleher, Peter B. O’Connor, David J. Aaserud, Daniel P. Little, Fred W. McLafferty	1996	103
14	Reverse transcription-associated dephosphorylation of hepadnavirus nucleocapsids Proceedings of the National Academy of Sciences ·David H. Perlman, Eric A. Berg, Peter B. O’Connor, Catherine E. Costello, Jianming Hu	2005	101
15	Data processing in Fourier transform ion cyclotron resonance mass spectrometry Mass Spectrometry Reviews ·Yulin Qi, Peter B. O’Connor	2014	89
16	Coupling Thin-Layer Chromatography with Vibrational Cooling Matrix-Assisted Laser Desorption/Ionization Fourier Transform Mass Spectrometry for the Analysis of Ganglioside Mixtures Analytical Chemistry ·Vera B. Ivleva, Yuri Nikolaevich Elkin, Bogdan Budnik, Susanne C. Moyer, Peter B. O’Connor, Catherine E. Costello	2004	84
17	Collisionally activated dissociation and electron capture dissociation provide complementary structural information for branched permethylated oligosaccharides Journal of the American Society for Mass Spectrometry ·Cheng Zhao, Bo Yu Xie, Shiu-Yung Chan, Catherine E. Costello, Peter B. O’Connor	2007	80
18	Use of 18 O labels to monitor deamidation during protein and peptide sample processing Journal of the American Society for Mass Spectrometry ·Xiaojuan Li, Jason J. Cournoyer, Cheng Ting Lin, Peter B. O’Connor	2008	76
19	Absorption-Mode: The Next Generation of Fourier Transform Mass Spectra Analytical Chemistry ·Yulin Qi, Mark P. Barrow, Huilin Li, Joseph E. Meier, Steve L. Van Orden, Christopher J. Thompson, Peter B. O’Connor	2012	75
20	Glutamine Deamidation: Differentiation of Glutamic Acid and γ-Glutamic Acid in Peptides by Electron Capture Dissociation Analytical Chemistry ·Xiaojuan Li, Cheng Ting Lin, Peter B. O’Connor	2010	75

About Peter B. O’Connor

Peter B. O’Connor is a scholar working on Spectroscopy, Computational Mechanics, Molecular Biology, Bioengineering and Radiation, having authored 177 papers that have together received 7.0k indexed citations. Recurring topics across this work include Mass Spectrometry Techniques and Applications (130 papers), Analytical Chemistry and Chromatography (56 papers), Advanced Proteomics Techniques and Applications (40 papers), Ion-surface interactions and analysis (29 papers), Metabolomics and Mass Spectrometry Studies (21 papers), Protein Structure and Dynamics (16 papers), Enzyme Structure and Function (14 papers) and Nuclear Physics and Applications (8 papers). The work is most often cited by research in Spectroscopy (4.5k citations), Molecular Biology (3.0k citations), Analytical Chemistry (415 citations), Computational Mechanics (723 citations) and Clinical Biochemistry (96 citations). Peter B. O’Connor has collaborated with scholars based in United Kingdom, United States and Germany. Frequent co-authors include Catherine E. Costello, Fred W. McLafferty, Cheng Ting Lin, Jason J. Cournoyer, Daniel P. Little, Mark P. Barrow, Michael W. Senko, J. Paul Speir, Yulin Qi and Peter John Sadler. Their work appears in journals such as Journal of the American Society for Mass Spectrometry, Analytical Chemistry, Rapid Communications in Mass Spectrometry, Chemical Communications and Protein Science.

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.

Explore authors with similar magnitude of impact

Peter B. O’Connor

Impact in

Papers in i

In The Last Decade

Peter B. O’Connor

Peter B. O’Connor's Hit Papers

Peers

Countries citing papers authored by Peter B. O’Connor

Fields of papers citing papers by Peter B. O’Connor

All Works

About Peter B. O’Connor

Explore authors with similar magnitude of impact

Papers in