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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 74 4709 4277 1483 1239 366 19112
Biology and Biochemistry 74 5614 5173 2664 2388 357 19044

Tadhg P. Begley publications per year

The chart shows the history of publications by Tadhg P. Begley between 1983 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Tadhg P. Begley published across 43 years, from 1983 to 2025, averaging 8.7 papers a year. Output peaked at 24 publications in 2005. 9 of the 375 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1983 to 2025. Vertical axis: number of publications, 0 to 24. Peak 24 publications in 2005. 1983: 1 publication 1984: 1 publication 1985: 0 publications 1986: 2 publications 1987: 2 publications 1988: 2 publications 1989: 4 publications 1990: 0 publications 1991: 5 publications 1992: 4 publications 1993: 4 publications 1994: 2 publications 1995: 6 publications 1996: 6 publications 1997: 6 publications 1998: 12 publications 1999: 9 publications 2000: 13 publications 2001: 11 publications 2002: 9 publications 2003: 19 publications 2004: 12 publications 2005: 24 publications 2006: 14 publications 2007: 15 publications 2008: 24 publications 2009: 11 publications 2010: 20 publications 2011: 15 publications 2012: 16 publications 2013: 18 publications 2014: 4 publications 2015: 13 publications 2016: 13 publications 2017: 14 publications 2018: 13 publications 2019: 6 publications 2020: 7 publications 2021: 3 publications 2022: 4 publications 2023: 2 publications 2024: 4 publications 2025: 5 publications
1983 2025

375 publications in total across all disciplines

View publications per year as a table
Tadhg P. Begley: publications per year, 1983 to 2025
Year Publications
1983 1
1984 1
1985 0
1986 2
1987 2
1988 2
1989 4
1990 0
1991 5
1992 4
1993 4
1994 2
1995 6
1996 6
1997 6
1998 12
1999 9
2000 13
2001 11
2002 9
2003 19
2004 12
2005 24
2006 14
2007 15
2008 24
2009 11
2010 20
2011 15
2012 16
2013 18
2014 4
2015 13
2016 13
2017 14
2018 13
2019 6
2020 7
2021 3
2022 4
2023 2
2024 4
2025 5
Total 375
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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.

No. of scientists
250 500 750 1,000 1,250
Bar chart with 63 bars. Horizontal axis: publications, 61–80 to 1,295+. Vertical axis: number of scientists, 0 to 1,350. Most scientists, 1,350, have 161–180 publications. The last bar groups every scientist with 1,295 publications or more. The highlighted bar, 361–380 publications, is where this scientist sits. 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
61–80 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.

View publications distribution as a table
Number of Chemistry scientists by publication count, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
Publications Scientists This scientist
61–80 66
81–100 302
101–120 623
121–140 918
141–160 1,218
161–180 1,350
181–200 1,344
201–220 1,281
221–240 1,216
241–260 1,100
261–280 979
281–300 939
301–320 764
321–340 643
341–360 628
361–380 522 366
381–400 459
401–420 397
421–440 327
441–460 270
461–480 265
481–500 252
501–520 201
521–540 185
541–560 148
561–580 148
581–600 132
601–620 114
621–640 104
641–660 91
661–680 92
681–700 73
701–720 57
721–740 54
741–760 67
761–780 45
781–800 46
801–820 39
821–840 32
841–860 36
861–880 29
881–900 26
901–920 24
921–940 14
941–960 23
961–980 28
981–1,000 15
1,001–1,020 29
1,021–1,040 12
1,041–1,060 19
1,061–1,080 12
1,081–1,100 6
1,101–1,120 8
1,121–1,140 12
1,141–1,160 5
1,161–1,180 6
1,181–1,200 14
1,201–1,220 7
1,221–1,240 2
1,241–1,260 6
1,261–1,280 4
1,281–1,294 6
1,295+ 100
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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.

No. of scientists
250 500 750 1,000
Bar chart with 61 bars. Horizontal axis: D-Index, 40–41 to 159+. Vertical axis: number of scientists, 0 to 1,051. Most scientists, 1,051, have 56–57 D-Index. The last bar groups every scientist with 159 D-Index or more. The highlighted bar, 74–75 D-Index, is where this scientist sits. 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
40–41 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.

View D-Index distribution as a table
Number of Chemistry scientists by D-index, Research.com 2026 ranking edition. Based on 17,934 ranked scientists.
D-Index Scientists This scientist
40–41 289
42–43 612
44–45 808
46–47 776
48–49 835
50–51 861
52–53 872
54–55 933
56–57 1,051
58–59 930
60–61 882
62–63 834
64–65 731
66–67 775
68–69 683
70–71 646
72–73 561
74–75 501 74
76–77 437
78–79 388
80–81 354
82–83 292
84–85 275
86–87 254
88–89 235
90–91 185
92–93 192
94–95 155
96–97 163
98–99 125
100–101 105
102–103 105
104–105 112
106–107 88
108–109 68
110–111 69
112–113 65
114–115 79
116–117 61
118–119 44
120–121 37
122–123 40
124–125 33
126–127 26
128–129 34
130–131 35
132–133 25
134–135 27
136–137 17
138–139 16
140–141 20
142–143 20
144–145 15
146–147 9
148–149 9
150–151 16
152–153 11
154–155 9
156–157 3
158 3
159+ 98
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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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