World's Best Scientists 2026 revealed!
John M. Buchanan

John M. Buchanan

D-Index & Metrics

Biology and Biochemistry

D-Index
62
Citations
10455
World Ranking
11043
National Ranking
4771

Chemistry

D-Index
61
Citations
10240
World Ranking
9476
National Ranking
2662

John M. Buchanan 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 M. Buchanan 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: 158 publications — 17th percentile

17% of scientists in this discipline score the same or lower.

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

John M. Buchanan 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 M. Buchanan 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: 61 D-Index — 49th percentile

49% of scientists in this discipline score the same or lower.

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

Research.com Recognitions

  • 1966 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1964 - Fellow of John Simon Guggenheim Memorial Foundation
  • 1962 - Member of the National Academy of Sciences

Overview

John M. Buchanan was affiliated with MIT in the United States and specialized primarily in Environmental Science. Their research contributions spanned several interconnected subfields including Global and Planetary Change, Management, Monitoring, Policy and Law, and Pollution.

The scientist's research addressed topics such as Conservation, Biodiversity, and Resource Management, Rangeland Management and Livestock Ecology, and Energy and Environment Impacts. These themes recur through their published work, reflecting a focus on environmental systems and their sustainable management.

Among their published works, one notable paper is titled "Land use and land cover changes along the China-Myanmar Oil and Gas pipelines - Monitoring infrastructure development in remote conflict-prone regions", published in 2020 in PLoS ONE. This paper generated 19 citations and contributes to understanding environmental impacts in sensitive geopolitical areas.

  • Thiri Shwesin Aung
  • Thomas B. Fischer

  • PLoS ONE

Their frequent collaborators included Thiri Shwesin Aung and Thomas B. Fischer, indicating partnerships in environmental and policy-related research domains.

John M. Buchanan was recognized by several distinguished scientific bodies. They were a Fellow of the American Association for the Advancement of Science (AAAS) since 1966, a Fellow of the John Simon Guggenheim Memorial Foundation from 1964, and a Member of the National Academy of Sciences since 1962.

Best Publications

  • Mitogenic activity of blood components. I. Thrombin and prothrombin.

    Lan Bo Chen;John M. Buchanan

  • Biosynthesis of the purines. XV. The effect of aza-L-serine and 6-diazo-5-oxo-L-norleucine on inosinic acid biosynthesis de novo.

    Bruce Levenberg;Irving Melnick;John M. Buchanan

  • Studies on the identification of a folate compound of human serum.

    Victor Herbert;Allan R. Larrabee;John M. Buchanan

  • EARLY ENZYME SYNTHESIS AND ITS CONTROL IN E. COLI INFECTED WITH SOME AMBER MUTANTS OF BACTERIOPHAGE T4

    John S. Wiberg;Marie-Luise Dirksen;Richard H. Epstein;S. E. Luria

  • THE PARTICIPATION OF CARBON DIOXIDE IN THE CARBOHYDRATE CYCLE

    A.K. Solomon;Birgit Vennesland;Friedrich W. Klemperer;John M. Buchanan

  • Biological precursors of uric acid; the role of lactate, glycine, and carbon dioxide as precursors of the carbon chain and nitrogen atom 7 of uric acid.

    John M. Buchanan;John C. Sonne;Adelaide M. Delluva

  • ENZYMATIC SYNTHESIS OF THE METHYL GROUP OF METHIONINE. 8. REPRESSION-DEREPRESSION, PURIFICATION, AND PROPERTIES OF 5,10-METHYLENETETRAHYDROFOLATE REDUCTASE FROM ESCHERICHIA COLI.

    Howard M. Katzen;John M. Buchanan

  • CHAPTER 35 – Biosynthesis of Purine Nucleotides*

    John M. Buchanan

  • Biosynthesis of the purines. XVI. The synthesis of adenosine 5'-phosphate and 5-amino-4-imidazolecarboxamide ribotide by a nucleotide pyrophosphorylase.

    Joel G. Flaks;Mary Jane Erwin;John M. Buchanan

  • Association of the src gene product of Rous sarcoma virus with cytoskeletal structures of chicken embryo fibroblasts.

    John G. Burr;Gideon Dreyfuss;Sheldon Penman;John M. Buchanan

  • BIOLOGICAL PRECURSORS OF URIC ACID I. THE RÔLE OF LACTATE, ACETATE, AND FORMATE IN THE SYNTHESIS OF THE UREIDE GROUPS OF URIC ACID

    John C. Sonne;John M. Buchanan;Adelaide M. Delluva

  • THE RÔLE OF CARBOXYL-LABELED ACETIC, PROPIONIC, AND BUTYRIC ACIDS IN LIVER GLYCOGEN FORMATION

    John M. Buchanan;A. Baird Hastings;Frances B. Nesbett

  • Effects of protease treatment on growth, morphology, adhesion, and cell surface proteins of secondary chick embryo fibroblasts

    Bruce R. Zetter;Lan Bo Chen;John M. Buchanan

  • Enzymatic synthesis of the methyl group of methionine. I. Identification of the enzymes and cofactors involved in the system isolated from Escherichia coli

    Frederick T. Hatch;Allan R. Larrabee;Renata E. Cathou;John M. Buchanan

  • The use of isotopically marked carbon in the study of intermediary metabolism.

    John M. Buchanan;A. Baird Hastings

  • Mitogenicity of thrombin and surface alterations on mouse splenocytes.

    L.B. Chen;N.N.H. Teng;J.M. Buchanan

  • Involvement of Atp, 5-Phosphoribosyl-Pyrophosphate and L-Azaserine in the Enzymatic Formation of Glycinamide Ribotide Intermediates in Inosinic Acid Biosynthesis

    Standish C. Hartman;Bruce Levenberg;John M. Buchanan

  • Nucleic acids, purines, pyrimidines (nucleotide synthesis).

    Standish C. Hartman;John M. Buchanan

  • Biosynthesis of the Purines XXXIII. CATALYTIC PROPERTIES OF THE GLUTAMINE SITE OF FORMYLGLYCINAMIDE RIBONUCLEOTIDE AMIDOTRANSFERASE FROM CHICKEN LIVER

    Heng-Chun Li;John M. Buchanan

  • A METHYLATED DERIVATIVE OF TETRAHYDROFOLATE AS AN INTERMEDIATE OF METHIONINE BIOSYNTHESIS1

    Allan R. Larrabee;Spencer Rosenthal;Renata E. Cathou;John M. Buchanan

Frequent Co-Authors

Lan Bo Chen
Lan Bo Chen Harvard University
Bruce R. Zetter
Bruce R. Zetter Boston Children's Hospital
A. Baird Hastings
A. Baird Hastings Harvard University
Victor R. Ambros
Victor R. Ambros University of Massachusetts Chan Medical School
Gideon Dreyfuss
Gideon Dreyfuss University of Pennsylvania
Tung-Tien Sun
Tung-Tien Sun New York University
Jean-Marie Frère
Jean-Marie Frère University of Liège
Christian B. Anfinsen
Christian B. Anfinsen National Institutes of Health
George L. Kenyon
George L. Kenyon University of California, San Francisco

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