World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
74
Citations
19044
World Ranking
5615
National Ranking
2665

Chemistry

D-Index
74
Citations
19112
World Ranking
4709
National Ranking
1483

Tadhg P. Begley 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 Tadhg P. Begley 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: 366 publications — 75th percentile

75% of scientists in this discipline score the same or lower.

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

Tadhg P. Begley 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 Tadhg P. Begley 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: 74 D-Index — 75th percentile

75% 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

  • 2009 - Fellow of the American Association for the Advancement of Science (AAAS)

Overview

Tadhg P. Begley is affiliated with Texas A&M University in the United States. Their research spans various interconnected fields including molecular biology, biochemistry, renewable energy, sustainability, nutrition, and organic chemistry. The scientist's work is documented through multiple publications across prominent scientific venues and involves collaborations with numerous coauthors.

Key recent publications include:

  • Radical SAM Enzyme HydE Generates Adenosylated Fe(I) Intermediates En Route to the [FeFe]-Hydrogenase Catalytic H-Cluster, 2020, Journal of the American Chemical Society
  • Mechanistic Studies on CysS - A Vitamin B12-Dependent Radical SAM Methyltransferase Involved in the Biosynthesis of the tert-Butyl Group of Cystobactamid, 2020, Journal of the American Chemical Society
  • Structural basis for antibiotic action of the B1 antivitamin 2'-methoxy-thiamine, 2020, Nature Chemical Biology
  • Alkylcysteine Sulfoxide C-S Monooxygenase Uses a Flavin-Dependent Pummerer Rearrangement, 2023, Journal of the American Chemical Society
  • Menaquinone Biosynthesis: New Strategies to Trap Radical Intermediates in the MqnE-Catalyzed Reaction, 2021, Biochemistry

The scientist has frequent coauthors including Anand Bachhawat, Lila M. Gierasch, F. Peter Guengerich, Ruma Banerjee, and Roger Colbran, each contributing to multiple joint publications.

Publication venues where the scientist has contributed most often include:

  • Journal of Biological Chemistry (38 publications)
  • Journal of the American Chemical Society (5 publications)
  • Biochemistry (3 publications)
  • ACS Central Science (2 publications)
  • Nature Chemical Biology (1 publication)

Tadhg P. Begley's research topics cover biochemical and molecular research, biochemical acid research studies, metalloenzymes and iron-sulfur proteins, amino acid enzymes and metabolism, metabolism and genetic disorders, porphyrin metabolism and disorders, and click chemistry and applications.

Subfields of study include molecular biology, biochemistry, renewable energy, sustainability and environment, nutrition and dietetics, and organic chemistry.

The scientist was named a Fellow of the American Association for the Advancement of Science (AAAS) in 2009.

Best Publications

  • The Subsystems Approach to Genome Annotation and its Use in the Project to Annotate 1000 Genomes

    Ross Overbeek;Tadhg P. Begley;Ralph M. Butler;Jomuna Choudhuri

  • Identification of a thiamin-dependent synthase in Escherichia coli required for the formation of the 1-deoxy-d-xylulose 5-phosphate precursor to isoprenoids, thiamin, and pyridoxol

    G A Sprenger;U Schörken;T Wiegert;S Grolle

  • Top down characterization of larger proteins (45 kDa) by electron capture dissociation mass spectrometry.

    Ying Ge;Brian G Lawhorn;Mariam ElNaggar;Erick Strauss

  • Thiamin biosynthesis in prokaryotes.

    Begley Tp;Downs Dm;Ealick Se;McLafferty Fw

  • The Structural and Biochemical Foundations of Thiamin Biosynthesis

    Christopher T. Jurgenson;Tadhg P. Begley;Steven E. Ealick

  • High-resolution solution structures of oxidized and reduced Escherichia coli thioredoxin.

    Mei-Fen Jeng;A.Patricia Campbell;Tadhg Begley;Arne Holmgren

  • NAD biosynthesis: identification of the tryptophan to quinolinate pathway in bacteria.

    Oleg Kurnasov;Vasiliy Goral;Keri Colabroy;Svetlana Gerdes

  • The biosynthesis of coenzyme A in bacteria.

    Tadhg P Begley;Cynthia Kinsland;Erick Strauss

  • Phenoxazinone synthase: mechanism for the formation of the phenoxazinone chromophore of actinomycin.

    Clifton E. Barry;Parmesh G. Nayar;Tadhg P. Begley

  • The crystal structure and mechanism of orotidine 5′-monophosphate decarboxylase

    Todd C. Appleby;Cynthia Kinsland;Tadhg P. Begley;Steven E. Ealick

  • Structure of oxalate decarboxylase from Bacillus subtilis at 1.75 A resolution.

    Ruchi Anand;Pieter C. Dorrestein;Cynthia Kinsland;Tadhg P. Begley

  • Top-down MS, a powerful complement to the high capabilities of proteolysis proteomics.

    Fred W. McLafferty;Kathrin Breuker;Mi Jin;Xuemei Han

  • Thiamin biosynthesis in Escherichia coli. Identification of ThiS thiocarboxylate as the immediate sulfur donor in the thiazole formation.

    Sean V. Taylor;Neil L. Kelleher;Cynthia Kinsland;Hsiu-Ju Chiu

  • Crystal Structure of Mammalian Cysteine Dioxygenase: A NOVEL MONONUCLEAR IRON CENTER FOR CYSTEINE THIOL OXIDATION.

    Chad R. Simmons;Qun Liu;Qingqiu Huang;Quan Hao

  • Saccharomyces cerevisiae THI4p is a suicide thiamine thiazole synthase

    Abhishek Chatterjee;Abhishek Chatterjee;N. Dinuka Abeydeera;Shridhar Bale;Shridhar Bale;Pei-Jing Pai

  • Wiley encyclopedia of chemical biology

    Tadhg P. Begley

  • Reconstitution of ThiC in thiamine pyrimidine biosynthesis expands the radical SAM superfamily

    Abhishek Chatterjee;Yue Li;Yang Zhang;Tyler L Grove

  • Discovery of a SAR11 growth requirement for thiamin's pyrimidine precursor and its distribution in the Sargasso Sea.

    Paul Carini;Paul Carini;Emily O Campbell;Jeff Morré;Sergio A Sañudo-Wilhelmy

  • PHOTOENZYMES : A NOVEL CLASS OF BIOLOGICAL CATALYSTS

    Tadhg P. Begley

  • Phenoxazinone synthase: enzymatic catalysis of an aminophenol oxidative cascade

    Clifton E. Barry;Parmesh G. Nayar;Tadhg P. Begley

  • Structural genes for thiamine biosynthetic enzymes (thiCEFGH) in Escherichia coli K-12.

    P B Vander Horn;A D Backstrom;V Stewart;T P Begley

  • The biosynthesis of nicotinamide adenine dinucleotides in bacteria

    Tadhg P Begley;Cynthia Kinsland;Ryan A Mehl;Andrei Osterman

Frequent Co-Authors

Steven E. Ealick
Steven E. Ealick Cornell University
Fred W. McLafferty
Fred W. McLafferty Cornell University
Pieter C. Dorrestein
Pieter C. Dorrestein University of California, San Diego
Neil L. Kelleher
Neil L. Kelleher Northwestern University
Sean T. O’Leary
Sean T. O’Leary University of Colorado Anschutz Medical Campus
Ying Ge
Ying Ge University of Wisconsin–Madison
Andrei L. Osterman
Andrei L. Osterman Discovery Institute
Kanagalaghatta R. Rajashankar
Kanagalaghatta R. Rajashankar Argonne National Laboratory
Kari I. Kivirikko
Kari I. Kivirikko University of Oulu
Johanna Myllyharju
Johanna Myllyharju University of Oulu

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