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John S. Klassen

John S. Klassen

University of Alberta
Canada

D-Index & Metrics

Chemistry

D-Index
53
Citations
8042
World Ranking
13269
National Ranking
361

John S. Klassen publication distribution in Chemistry in 2026

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

61–80 publications: 66 scientists 81–100 publications: 302 scientists 101–120 publications: 623 scientists 121–140 publications: 918 scientists 141–160 publications: 1,218 scientists 161–180 publications: 1,350 scientists 181–200 publications: 1,344 scientists 201–220 publications: 1,281 scientists 221–240 publications: 1,216 scientists 241–260 publications: 1,100 scientists 261–280 publications: 979 scientists 281–300 publications: 939 scientists 301–320 publications: 764 scientists 321–340 publications: 643 scientists 341–360 publications: 628 scientists 361–380 publications: 522 scientists 381–400 publications: 459 scientists 401–420 publications: 397 scientists 421–440 publications: 327 scientists 441–460 publications: 270 scientists 461–480 publications: 265 scientists 481–500 publications: 252 scientists 501–520 publications: 201 scientists 521–540 publications: 185 scientists 541–560 publications: 148 scientists 561–580 publications: 148 scientists 581–600 publications: 132 scientists 601–620 publications: 114 scientists 621–640 publications: 104 scientists 641–660 publications: 91 scientists 661–680 publications: 92 scientists 681–700 publications: 73 scientists 701–720 publications: 57 scientists 721–740 publications: 54 scientists 741–760 publications: 67 scientists 761–780 publications: 45 scientists 781–800 publications: 46 scientists 801–820 publications: 39 scientists 821–840 publications: 32 scientists 841–860 publications: 36 scientists 861–880 publications: 29 scientists 881–900 publications: 26 scientists 901–920 publications: 24 scientists 921–940 publications: 14 scientists 941–960 publications: 23 scientists 961–980 publications: 28 scientists 981–1,000 publications: 15 scientists 1,001–1,020 publications: 29 scientists 1,021–1,040 publications: 12 scientists 1,041–1,060 publications: 19 scientists 1,061–1,080 publications: 12 scientists 1,081–1,100 publications: 6 scientists 1,101–1,120 publications: 8 scientists 1,121–1,140 publications: 12 scientists 1,141–1,160 publications: 5 scientists 1,161–1,180 publications: 6 scientists 1,181–1,200 publications: 14 scientists 1,201–1,220 publications: 7 scientists 1,221–1,240 publications: 2 scientists 1,241–1,260 publications: 6 scientists 1,261–1,280 publications: 4 scientists 1,281–1,294 publications: 6 scientists 1,295+ publications: 100 scientists
61 publications 1,295+

This scientist: 179 publications — 25th percentile

25% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,295 publications or more.

John S. Klassen D-index placement in Chemistry in 2026

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

40–41 D-Index: 289 scientists 42–43 D-Index: 612 scientists 44–45 D-Index: 808 scientists 46–47 D-Index: 776 scientists 48–49 D-Index: 835 scientists 50–51 D-Index: 861 scientists 52–53 D-Index: 872 scientists 54–55 D-Index: 933 scientists 56–57 D-Index: 1,051 scientists 58–59 D-Index: 930 scientists 60–61 D-Index: 882 scientists 62–63 D-Index: 834 scientists 64–65 D-Index: 731 scientists 66–67 D-Index: 775 scientists 68–69 D-Index: 683 scientists 70–71 D-Index: 646 scientists 72–73 D-Index: 561 scientists 74–75 D-Index: 501 scientists 76–77 D-Index: 437 scientists 78–79 D-Index: 388 scientists 80–81 D-Index: 354 scientists 82–83 D-Index: 292 scientists 84–85 D-Index: 275 scientists 86–87 D-Index: 254 scientists 88–89 D-Index: 235 scientists 90–91 D-Index: 185 scientists 92–93 D-Index: 192 scientists 94–95 D-Index: 155 scientists 96–97 D-Index: 163 scientists 98–99 D-Index: 125 scientists 100–101 D-Index: 105 scientists 102–103 D-Index: 105 scientists 104–105 D-Index: 112 scientists 106–107 D-Index: 88 scientists 108–109 D-Index: 68 scientists 110–111 D-Index: 69 scientists 112–113 D-Index: 65 scientists 114–115 D-Index: 79 scientists 116–117 D-Index: 61 scientists 118–119 D-Index: 44 scientists 120–121 D-Index: 37 scientists 122–123 D-Index: 40 scientists 124–125 D-Index: 33 scientists 126–127 D-Index: 26 scientists 128–129 D-Index: 34 scientists 130–131 D-Index: 35 scientists 132–133 D-Index: 25 scientists 134–135 D-Index: 27 scientists 136–137 D-Index: 17 scientists 138–139 D-Index: 16 scientists 140–141 D-Index: 20 scientists 142–143 D-Index: 20 scientists 144–145 D-Index: 15 scientists 146–147 D-Index: 9 scientists 148–149 D-Index: 9 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 11 scientists 154–155 D-Index: 9 scientists 156–157 D-Index: 3 scientists 158 D-Index: 3 scientists 159+ D-Index: 98 scientists
40 D-Index 159+

This scientist: 53 D-Index — 28th percentile

28% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 159 D-Index or more.

Overview

John S. Klassen is affiliated with the University of Alberta in Canada. Their research mainly spans the fields of Biochemistry, Genetics and Molecular Biology, with a significant focus on Molecular Biology and Medicine.

Klassen's recent publications cover a range of topics related to glycobiology, viral entry mechanisms, and protein interactions. Selected recent papers include:

  • Sialic acid-containing glycolipids mediate binding and viral entry of SARS-CoV-2, 2021, Nature Chemical Biology
  • A versatile soluble siglec scaffold for sensitive and quantitative detection of glycan ligands, 2020, Nature Communications
  • Carbohydrate Sulfation As a Mechanism for Fine-Tuning Siglec Ligands, 2021, ACS Chemical Biology
  • Structural and biochemical characterization of the exopolysaccharide deacetylase Agd3 required for Aspergillus fumigatus biofilm formation, 2020, Nature Communications
  • Submicron Emitters Enable Reliable Quantification of Weak Protein-Glycan Interactions by ESI-MS, 2021, Analytical Chemistry

Their research topics reflect a strong emphasis on:

  • Glycosylation and Glycoproteins Research
  • Carbohydrate Chemistry and Synthesis
  • SARS-CoV-2 and COVID-19 Research
  • Monoclonal and Polyclonal Antibodies Research
  • Mass Spectrometry Techniques and Applications
  • Bacterial biofilms and quorum sensing
  • Enzyme Structure and Function

Klassen frequently collaborates with several other researchers, among them:

  • Elena N. Kitova (33 publications)
  • Duong T. Bui (22 publications)
  • Matthew S. Macauley (19 publications)
  • Lara K. Mahal (17 publications)
  • Ling Han (15 publications)

Publication venues where Klassen's work predominantly appears include:

  • Analytical Chemistry (10 publications)
  • Nature Communications (7 publications)
  • bioRxiv (Cold Spring Harbor Laboratory) (7 publications)
  • ACS Chemical Biology (3 publications)
  • Journal of the American Chemical Society (3 publications)

The scientist's subfields of study are diverse and include:

  • Molecular Biology
  • Infectious Diseases
  • Organic Chemistry
  • Spectroscopy
  • Radiology, Nuclear Medicine and Imaging

Best Publications

  • Reliable Determinations of Protein–Ligand Interactions by Direct ESI-MS Measurements. Are We There Yet?

    Elena N. Kitova;Amr El-Hawiet;Paul D. Schnier;John S. Klassen

  • Sialic acid-containing glycolipids mediate binding and viral entry of SARS-CoV-2.

    Linh Nguyen;Kelli A McCord;Duong T Bui;Kim M Bouwman

  • Method for distinguishing specific from nonspecific protein-ligand complexes in nanoelectrospray ionization mass spectrometry.

    Jiangxiao Sun;Elena N Kitova;Weijie Wang;John S Klassen

  • Influence of Solution and Gas Phase Processes on Protein−Carbohydrate Binding Affinities Determined by Nanoelectrospray Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

    Weijie Wang;Elena N. Kitova;John S. Klassen

  • The Peptidisc, a simple method for stabilizing membrane proteins in detergent-free solution.

    Michael Luke Carlson;John William Young;Zhiyu Zhao;Lucien Fabre

  • Thermal decomposition of a gaseous multiprotein complex studied by blackbody infrared radiative dissociation. Investigating the origin of the asymmetric dissociation behavior.

    Natalia Felitsyn;Elena N. Kitova;John S. Klassen

  • Activation energies for dissociation of double strand oligonucleotide anions: evidence for watson-crick base pairing in vacuo.

    Paul D. Schnier;John S. Klassen;Eric F. Strittmatter;Evan R. Williams

  • Optogenetic control with a photocleavable protein, PhoCl

    Wei Zhang;Alexander W Lohman;Yevgeniya Zhuravlova;Xiaocen Lu

  • Functional Characterization of Bacterial Oligosaccharyltransferases Involved in O-Linked Protein Glycosylation

    Amirreza Faridmoayer;Messele A. Fentabil;Dominic C. Mills;John S. Klassen

  • Reaction Enthalpies for M+L = M+ + L, Where M+ = Na+ and K+ and L = Acetamide, N-Methylacetamide, N,N-Dimethylacetamide, Glycine, and Glycylglycine, from Determinations of the Collision-Induced Dissociation Thresholds

    John S. Klassen;Stephen G. Anderson;and Arthur T. Blades;Paul Kebarle

  • Collision-Induced Dissociation Threshold Energies of Protonated Glycine, Glycinamide, and Some Related Small Peptides and Peptide Amino Amides

    John S. Klassen;Paul Kebarle

  • Method for stabilizing protein-ligand complexes in nanoelectrospray ionization mass spectrometry.

    Jiangxiao Sun;Elena N. Kitova;John S. Klassen

  • Hydrophobic protein-ligand interactions preserved in the gas phase.

    Lan Liu;Dhanashri Bagal;Elena N. Kitova;Paul D. Schnier

  • DETERMINATIONS OF ION-MOLECULE EQUILIBRIA INVOLVING IONS PRODUCED BY ELECTROSPRAY. HYDRATION OF PROTONATED AMINES, DIAMINES, AND SOME SMALL PEPTIDES

    John S. Klassen;Arthur T. Blades;Paul Kebarle

  • Hydration of Gas-Phase Gramicidin S (M + 2H)2+ Ions Formed by Electrospray: The Transition From Solution to Gas-Phase Structure

    Sandra E. Rodriguez-Cruz;John S. Klassen;Evan R. Williams

  • Nonspecific protein-carbohydrate complexes produced by nanoelectrospray ionization. Factors influencing their formation and stability.

    Weijie Wang;Elena N. Kitova;John S. Klassen

  • Droplet Electrospray Mass Spectrometry

    Darcy B. Hager;Norman J. Dovichi;John. Klassen;Paul. Kebarle

  • Ligand specificity of CS-35, a monoclonal antibody that recognizes mycobacterial lipoarabinomannan: a model system for oligofuranoside-protein recognition.

    Christoph Rademacher;Glen K. Shoemaker;Hyo-Sun Kim;Ruixiang Blake Zheng

  • FREE ENERGIES OF HYDRATION IN THE GAS PHASE OF THE ANIONS OF SOME OXO ACIDS OF C, N, S, P, CL, AND I

    Arthur T. Blades;John S. Klassen;Paul Kebarle

  • Determination of protein-ligand association thermochemistry using variable-temperature nanoelectrospray mass spectrometry.

    Rambod Daneshfar;Elena N Kitova;John S Klassen

  • Trapping and characterization of covalent intermediates of mutant retaining glycosyltransferases

    Naoto Soya;Ying Fang;Monica M Palcic;John S Klassen

Frequent Co-Authors

Xi Jiang
Xi Jiang Cincinnati Children's Hospital Medical Center
Ming Tan
Ming Tan Cincinnati Children's Hospital Medical Center
Todd L. Lowary
Todd L. Lowary University of Alberta
Gilbert G. Privé
Gilbert G. Privé University of Toronto
David R. Bundle
David R. Bundle University of Alberta
Paul Kebarle
Paul Kebarle University of Alberta
Evan R. Williams
Evan R. Williams University of California, Berkeley
Monica M. Palcic
Monica M. Palcic Carlsberg Laboratory
P. Lynne Howell
P. Lynne Howell University of Toronto
Jeroen D. C. Codée
Jeroen D. C. Codée Leiden University

External Links

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Best Scientists Citing John S. Klassen

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