World's Best Scientists 2026 revealed!

D-Index & Metrics

Chemistry

D-Index
50
Citations
12659
World Ranking
14235
National Ranking
3677

James P. Allen 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 James P. Allen 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: 184 publications — 27th percentile

27% of scientists in this discipline score the same or lower.

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

James P. Allen 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 James P. Allen 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: 50 D-Index — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Overview

James P. Allen is affiliated with Arizona State University in the United States. Their research spans diverse fields including Arts and Humanities, with 39 publications, and Biochemistry, Genetics and Molecular Biology, with 12 publications. This interdisciplinary approach reflects in their work across several subfields, such as Archeology, Language and Linguistics, Molecular Biology, Experimental and Cognitive Psychology, and Linguistics and Language.

The scientist's body of work covers a range of main topics, including:

  • Ancient Egypt and Archaeology
  • Syntax, Semantics, Linguistic Variation
  • Phonetics and Phonology Research
  • Archaeology and Historical Studies
  • Photosynthetic Processes and Mechanisms
  • Linguistic Variation and Morphology
  • Photoreceptor and optogenetics research

Among their recent scholarly papers are:

  • Identification of amino acid residues in a proton release pathway near the bacteriochlorophyll dimer in reaction centers from Rhodobacter sphaeroides, 2022, published in Photosynthesis Research
  • Skeletal muscle structure, function and pathology, 2024, published in Orthopaedics and Trauma
  • Enhanced Photocatalytic Hydrogen Production by Hybrid Streptavidin-Diiron Catalysts, 2020, published in Chemistry - A European Journal
  • Fibroadipogenic Progenitors Regulate the Basal Proliferation of Satellite Cells and Homeostasis of Pharyngeal Muscles via HGF Secretion, 2022, published in Frontiers in Cell and Developmental Biology

Frequent co-authors in their publications include:

  • J. C. Williams
  • K. D. Chamberlain
  • Adrian Andronic
  • Eunhye Kim
  • Fang Wu

The scientist has contributed to books published by Cambridge University Press and Penn State University Press. Among these are:

  • Ancient Egyptian Phonology, 2020, published by Cambridge University Press
  • Coptic, 2020, published by Penn State University Press

James P. Allen's work appears in multiple academic journals, with recurring publications in:

  • Faculty Opinions - Post-Publication Peer Review of the Biomedical Literature
  • Photosynthesis Research
  • Frontiers in Cell and Developmental Biology
  • Orthopaedics and Trauma
  • Chemistry - A European Journal

Best Publications

  • Structure of the reaction center from Rhodobacter sphaeroides R-26: the cofactors

    J P Allen;G Feher;T O Yeates;H Komiya

  • Structure and function of bacterial photosynthetic reaction centres

    G. Feher;J. P. Allen;M. Y. Okamura;D. C. Rees

  • Structure of the reaction center from Rhodobacter sphaeroides R-26: the protein subunits

    J. P. Allen;G. Feher;T. O. Yeates;H. Komiya

  • Structural homology of reaction centers from Rhodopseudomonas sphaeroides and Rhodopseudomonas viridis as determined by x-ray diffraction.

    James P. Allen;G. Feher;T.O. Yeates;D.C. Rees

  • Structure of the reaction center from Rhodobacter sphaeroides R-26: protein-cofactor (quinones and Fe2+) interactions

    J P Allen;G Feher;T O Yeates;H Komiya

  • Structure of the reaction center from Rhodobacter sphaeroides R-26 and 2.4.1: protein-cofactor (bacteriochlorophyll, bacteriopheophytin, and carotenoid) interactions.

    T. O. Yeates;H. Komiya;A. Chirino;D. C. Rees

  • Structure of the reaction center from Rhodobacter sphaeroides R-26 and 2.4.1: symmetry relations and sequence comparisons between different species.

    H. Komiya;T. O. Yeates;D. C. Rees;J. P. Allen

  • Specific alteration of the oxidation potential of the electron donor in reaction centers from Rhodobacter sphaeroides.

    X. Lin;H. A. Murchison;V. Nagarajan;W. W. Parson

  • Structure of the reaction center from Rhodobacter sphaeroides R-26: membrane-protein interactions.

    T O Yeates;H Komiya;D C Rees;J P Allen

  • Protein dynamics control the kinetics of initial electron transfer in photosynthesis

    Haiyu Wang;Su Lin;James P. Allen;JoAnn C. Williams

  • Crystal structure of the bacteriochlorophyll a protein from Chlorobium tepidum

    Yi Fen Li;Wenli Zhou;Robert E. Blankenship;James P. Allen

  • The Bacterial Photosynthetic Reaction Center as a Model for Membrane Proteins

    D. C. Rees;H. Komiya;T. O. Yeates;J. P. Allen

  • Effects of mutations near the bacteriochlorophylls in reaction centers from Rhodobacter sphaeroides.

    Joann Williams;R. G. Alden;H. A. Murchison;J. M. Peloquin

  • Fractal Form of Proteins

    H. J. Stapleton;James Paul Allen;C. P. Flynn;D. G. Stinson

  • Crystallographic Analyses of Site-Directed Mutants of the Photosynthetic Reaction Center from Rhodobacter sphaeroides

    Arthur J. Chirino;Erik J. Lous;Erik J. Lous;Martina Huber;Martina Huber;James P. Allen

  • Crystallization of reaction center from Rhodopseudomonas sphaeroides: preliminary characterization.

    J P Allen;G Feher

  • Interactions between lipids and bacterial reaction centers determined by protein crystallography.

    A. Camara-Artigas;D. Brune;James Allen

  • The Pathway, Kinetics and Thermodynamics of Electron Transfer in Wild Type and Mutant Reaction Centers of Purple Nonsulfur Bacteria

    Neal W. Woodbury;James P. Allen

  • The structure of the FMO protein from Chlorobium tepidum at 2.2 A resolution.

    Ana Camara-Artigas;Robert E. Blankenship;James P. Allen

  • Photosynthetic reaction centers

    James Allen;Joann Williams

Frequent Co-Authors

Neal W. Woodbury
Neal W. Woodbury Arizona State University
Su Lin
Su Lin Arizona State University
Douglas C. Rees
Douglas C. Rees California Institute of Technology
Todd O. Yeates
Todd O. Yeates University of California, Los Angeles
Wolfgang Lubitz
Wolfgang Lubitz Max Planck Society
David B. Knaff
David B. Knaff Texas Tech University
Ethan P. White
Ethan P. White University of Florida
Michael K. Johnson
Michael K. Johnson University of Georgia
Pauline Barmby
Pauline Barmby University of Western Ontario
Robert E. Blankenship
Robert E. Blankenship Washington University in St. Louis

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