World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
47
Citations
12317
World Ranking
18584
National Ranking
7595

James B. Howard publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where James B. Howard sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 94 publications — 4th percentile

4% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

James B. Howard D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where James B. Howard sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 47 D-Index — 6th percentile

6% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

James B. Howard was affiliated with the University of Minnesota in the United States. Their research focused on several areas within energy and chemical engineering, with specific attention to renewable energy, sustainability, the environment, and catalysis.

Their main fields of study included:

  • Energy
  • Chemical Engineering

Subfields of their research work encompassed:

  • Renewable Energy, Sustainability and the Environment
  • Catalysis

Howard's scientific contributions addressed topics such as:

  • Metalloenzymes and iron-sulfur proteins
  • Ammonia Synthesis and Nitrogen Reduction
  • Electrocatalysts for Energy Conversion

Their recent publication record includes a paper titled Structural consequences of turnover-induced homocitrate loss in nitrogenase, published in 2023 in Nature Communications. This work has been cited 26 times. The publication venue, Nature Communications, also appears as a frequent publishing platform for their research.

Frequent co-authors during their career included:

  • Rebeccah A. Warmack
  • Ailiena O. Maggiolo
  • Andres Orta
  • Belinda B. Wenke
  • Douglas C. Rees

Best Publications

  • Structural Basis of Biological Nitrogen Fixation.

    James B. Howard;Douglas C. Rees

  • Nitrogenase MoFe-protein at 1.16 A resolution: a central ligand in the FeMo-cofactor.

    Oliver Einsle;Oliver Einsle;F. Akif Tezcan;Susana L. A. Andrade;Susana L. A. Andrade;Benedikt Schmid

  • The Mode of Action of Vitamin K IDENTIFICATION OF γ-CARBOXYGLUTAMIC ACID AS A COMPONENT OF PROTHROMBIN

    Gary L. Nelsestuen;Thomas H. Zytkovicz;James Bryant Howard

  • Structure of ADP x AIF4(-)-stabilized nitrogenase complex and its implications for signal transduction.

    Hermann Schindelin;Caroline Kisker;Jamie L. Schlessman;James B. Howard

  • Ligand binding to the FeMo-cofactor: Structures of CO-bound and reactivated nitrogenase

    Thomas Spatzal;Kathryn A. Perez;Oliver Einsle;James B. Howard;James B. Howard

  • ADP-ribosylation of elongation factor 2 by diphtheria toxin. NMR spectra and proposed structures of ribosyl-diphthamide and its hydrolysis products.

    B G Van Ness;J B Howard;J W Bodley

  • Structural basis of biological nitrogen fixation

    Douglas C Rees;F Akif Tezcan;Chad A Haynes;Mika Y Walton

  • Nitrogenase: Standing at the Crossroads

    Douglas C Rees;James B Howard

  • Nitrogenase: A Nucleotide-Dependent Molecular Switch

    James B. Howard;Douglas C. Rees

  • How many metals does it take to fix N2? A mechanistic overview of biological nitrogen fixation

    James B. Howard;Douglas C. Rees

  • The interface between the biological and inorganic worlds: iron-sulfur metalloclusters.

    Douglas C. Rees;James B. Howard

  • Nitrogenase complexes : Multiple docking sites for a nucleotide switch protein

    F. Akif Tezcan;F. Akif Tezcan;Jens T. Kaiser;Jens T. Kaiser;Debarshi Mustafi;Debarshi Mustafi;Mika Y. Walton;Mika Y. Walton

  • ADP-ribosylation of elongation factor 2 by diphtheria toxin. Isolation and properties of the novel ribosyl-amino acid and its hydrolysis products.

    B G Van Ness;J B Howard;J W Bodley

  • Conformational variability in structures of the nitrogenase iron proteins from Azotobacter vinelandii and Clostridium pasteurianum.

    Jamie L Schlessman;Deborah Woo;Leemor Joshua-Tor;James B Howard

  • Characterization of alkylamine-sensitive site in alpha 2-macroglobulin.

    Richard P. Swenson;James Bryant Howard

  • Determinants of protein hyperthermostability: purification and amino acid sequence of rubredoxin from the hyperthermophilic archaebacterium Pyrococcus furiosus and secondary structure of the zinc adduct by NMR.

    Paul R. Blake;Jae Bum Park;Frank O. Bryant;Shigetoshi Aono

  • Thiol reactivity of the nitrogenase Fe-protein from Azotobacter vinelandii.

    R P Hausinger;J B Howard

  • Reactive site in human alpha 2-macroglobulin: circumstantial evidence for a thiolester.

    James Bryant Howard

  • Catalysis-dependent selenium incorporation and migration in the nitrogenase active site iron-molybdenum cofactor

    Thomas Spatzal;Kathryn A Perez;James B Howard;James B Howard;Douglas C Rees

  • MgATP-Bound and Nucleotide-Free Structures of a Nitrogenase Protein Complex between the Leu 127Δ-Fe-Protein and the MoFe-Protein†,‡

    Hsiu-Ju Chiu;John W. Peters;William N. Lanzilotta;Matthew J. Ryle

Frequent Co-Authors

Douglas C. Rees
Douglas C. Rees California Institute of Technology
Oliver Einsle
Oliver Einsle University of Freiburg
Robert P. Hausinger
Robert P. Hausinger Michigan State University
Dennis R. Dean
Dennis R. Dean Virginia Tech
Hermann Schindelin
Hermann Schindelin University of Würzburg
Caroline Kisker
Caroline Kisker University of Würzburg
Gary L. Nelsestuen
Gary L. Nelsestuen University of Minnesota
Michael W. W. Adams
Michael W. W. Adams University of Georgia
Gary P. Roberts
Gary P. Roberts University of Wisconsin–Madison
Alexander N. Glazer
Alexander N. Glazer University of California, Berkeley

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