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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Chemistry 81 3308 2988 1091 917 298 20506

Michael K. Johnson publications per year

The chart shows the history of publications by Michael K. Johnson between 1968 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Michael K. Johnson published across 59 years, from 1968 to 2026, averaging 5.7 papers a year. Output peaked at 19 publications in 1995. 3 of the 338 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1968 to 2026. Vertical axis: number of publications, 0 to 19. Peak 19 publications in 1995. 1968: 1 publication 1969: 0 publications 1970: 0 publications 1971: 1 publication 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 1 publication 1977: 0 publications 1978: 1 publication 1979: 1 publication 1980: 3 publications 1981: 11 publications 1982: 2 publications 1983: 6 publications 1984: 3 publications 1985: 14 publications 1986: 2 publications 1987: 7 publications 1988: 5 publications 1989: 14 publications 1990: 4 publications 1991: 12 publications 1992: 7 publications 1993: 11 publications 1994: 9 publications 1995: 19 publications 1996: 9 publications 1997: 10 publications 1998: 13 publications 1999: 9 publications 2000: 10 publications 2001: 3 publications 2002: 10 publications 2003: 15 publications 2004: 11 publications 2005: 6 publications 2006: 6 publications 2007: 7 publications 2008: 6 publications 2009: 5 publications 2010: 5 publications 2011: 6 publications 2012: 6 publications 2013: 9 publications 2014: 3 publications 2015: 10 publications 2016: 7 publications 2017: 3 publications 2018: 11 publications 2019: 2 publications 2020: 7 publications 2021: 1 publication 2022: 3 publications 2023: 6 publications 2024: 2 publications 2025: 2 publications 2026: 1 publication
1968 2026

338 publications in total across all disciplines

View publications per year as a table
Michael K. Johnson: publications per year, 1968 to 2026
Year Publications
1968 1
1969 0
1970 0
1971 1
1972 0
1973 0
1974 0
1975 0
1976 1
1977 0
1978 1
1979 1
1980 3
1981 11
1982 2
1983 6
1984 3
1985 14
1986 2
1987 7
1988 5
1989 14
1990 4
1991 12
1992 7
1993 11
1994 9
1995 19
1996 9
1997 10
1998 13
1999 9
2000 10
2001 3
2002 10
2003 15
2004 11
2005 6
2006 6
2007 7
2008 6
2009 5
2010 5
2011 6
2012 6
2013 9
2014 3
2015 10
2016 7
2017 3
2018 11
2019 2
2020 7
2021 1
2022 3
2023 6
2024 2
2025 2
2026 1
Total 338
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Michael K. Johnson 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 Michael K. Johnson 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, 281–300 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: 298 publications — 63rd percentile

63% 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
281–300 939 298
301–320 764
321–340 643
341–360 628
361–380 522
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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Michael K. Johnson 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 Michael K. Johnson 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, 80–81 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: 81 D-Index — 82nd percentile

82% 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
76–77 437
78–79 388
80–81 354 81
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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Overview

Michael K. Johnson is affiliated with the University of Georgia in the United States. Their research spans multiple disciplines including ecology, molecular biology, and chemistry, focusing on topics such as metalloenzymes, photosynthetic processes, and wildlife ecology.

The scientist's recent publications cover a variety of subjects and have appeared in multiple academic journals. Notable papers include:

  • "Hollywood survival strategies in the post-COVID 19 era," 2021, Humanities and Social Sciences Communications
  • "The plastidial Arabidopsis thaliana NFU1 protein binds and delivers [4Fe-4S] clusters to specific client proteins," 2020, Journal of Biological Chemistry
  • "Applications of an unmanned aerial vehicle and thermal-imaging camera to study ducks nesting over water," 2020, Journal of Field Ornithology
  • "The Arabidopsis Mitochondrial Glutaredoxin GRXS15 Provides [2Fe-2S] Clusters for ISCA-Mediated [4Fe-4S] Cluster Maturation," 2020, International Journal of Molecular Sciences
  • "A Stable Naked Dithiolene Radical Anion and Synergic THF Ring-Opening," 2020, Journal of the American Chemical Society

The publication venues most frequently associated with this scientist include:

  • Zenodo (CERN European Organization for Nuclear Research)
  • Journal of Biological Chemistry
  • Humanities and Social Sciences Communications
  • Journal of Field Ornithology
  • International Journal of Molecular Sciences

Frequent co-authors collaborating with Michael K. Johnson are:

  • Jérémy Couturier
  • Nicolas Rouhier
  • Jonathan Przybyla-Toscano
  • Florence Vignols
  • Tamanna Azam

The main fields and subfields of study represented in the scientist's work include:

  • Ecology
  • Renewable Energy, Sustainability and the Environment
  • Molecular Biology
  • Inorganic Chemistry
  • Materials Chemistry

The primary topics addressed in their research are:

  • Metalloenzymes and iron-sulfur proteins
  • Photosynthetic Processes and Mechanisms
  • Metal-Catalyzed Oxygenation Mechanisms
  • Avian ecology and behavior
  • Wildlife Ecology and Conservation
  • Wildlife-Road Interactions and Conservation
  • Trace Elements in Health

Best Publications

  • STRUCTURE, FUNCTION, AND FORMATION OF BIOLOGICAL IRON-SULFUR CLUSTERS

    Deborah C. Johnson;Dennis R. Dean;Archer D. Smith;Michael K. Johnson

  • Redox-Dependent Structural Changes in the Nitrogenase P-Cluster

    J. W. Peters;M. B. H. Stowell;S. M. Soltis;M. G. Finnegan

  • IscU as a scaffold for iron-sulfur cluster biosynthesis: sequential assembly of [2Fe-2S] and [4Fe-4S] clusters in IscU.

    Jeffrey N. Agar;Carsten Krebs;Jeverson Frazzon;Boi Hanh Huynh

  • NifS-directed assembly of a transient [2Fe-2S] cluster within the NifU protein.

    Pramvadee Yuvaniyama;Jeffrey N. Agar;Valerie L. Cash;Michael K. Johnson

  • Functional Neural Development from Human Embryonic Stem Cells: Accelerated Synaptic Activity via Astrocyte Coculture

    Michael Johnson;Jason P. Weick;Robert A. Pearce;Su Chun Zhang

  • Limits on multiple instruction issue

    Michael D. Smith;Mike Johnson;Mark A. Horowitz

  • Spectroscopic characterization of the novel iron-sulfur cluster in Pyrococcus furiosus ferredoxin.

    R. C. Conover;A. T. Kowal;Weiguang Fu;Jae-Bum Park

  • IscA, an Alternate Scaffold for Fe−S Cluster Biosynthesis†

    Carsten Krebs;Jeffrey N. Agar;Archer D. Smith;Jeverson Frazzon

  • Chloroplast monothiol glutaredoxins as scaffold proteins for the assembly and delivery of [2Fe–2S] clusters

    Sibali Bandyopadhyay;Filipe Gama;Maria Micaela Molina-Navarro;José Manuel Gualberto

  • Iron—sulfur proteins: new roles for old clusters

    Michael K Johnson

  • The role and properties of the iron-sulfur cluster in Escherichia coli dihydroxy-acid dehydratase.

    D. H. Flint;M. H. Emptage;M. G. Finnegan;Weiguang Fu

  • Human ferrochelatase is an iron-sulfur protein.

    Harry A. Dailey;Michael G. Finnegan;Michael K. Johnson

  • The Yeast Iron Regulatory Proteins Grx3/4 and Fra2 Form Heterodimeric Complexes Containing a [2Fe-2S] Cluster with Cysteinyl and Histidyl Ligation

    Haoran Li;Daphne T. Mapolelo;Nin N. Dingra;Sunil G. Naik

  • Formation and Properties of [4Fe-4S] Clusters on the IscU Scaffold Protein†

    Kala Chandramouli;Mihaela-Carmen Unciuleac;Sunil Naik;Dennis R Dean

  • Glutaredoxins: roles in iron homeostasis

    Nicolas Rouhier;Jérémy Couturier;Michael K. Johnson;Jean-Pierre Jacquot

  • Sulfur transfer from IscS to IscU : the first step in iron-sulfur cluster biosynthesis

    A D Smith;J N Agar;K A Johnson;J Frazzon

  • [2Fe-2S] to [4Fe-4S] Cluster Conversion in Escherichia coli Biotin Synthase†

    Evert C. Duin;Meghan E. Lafferty;Brian R. Crouse;Ronda M. Allen

  • Functional, structural, and spectroscopic characterization of a glutathione-ligated [2Fe–2S] cluster in poplar glutaredoxin C1

    Nicolas Rouhier;Hideaki Unno;Sibali Bandyopadhyay;Lluis Masip

  • HscA and HscB stimulate [2Fe-2S] cluster transfer from IscU to apoferredoxin in an ATP-dependent reaction

    Kala Chandramouli;Michael K. Johnson

  • Iron–sulfur cluster biosynthesis

    Sibali Bandyopadhyay;Kala Chandramouli;Michael K. Johnson

Frequent Co-Authors

Michael W. W. Adams
Michael W. W. Adams University of Georgia
David B. Knaff
David B. Knaff Texas Tech University
Dennis R. Dean
Dennis R. Dean Virginia Tech
Andrew J. Thomson
Andrew J. Thomson University of East Anglia
Nicolas Rouhier
Nicolas Rouhier University of Lorraine
Brian M. Hoffman
Brian M. Hoffman Northwestern University
Guy N. L. Jameson
Guy N. L. Jameson University of Melbourne
Gary Cecchini
Gary Cecchini University of California, San Francisco
Colin Greenwood
Colin Greenwood University of East Anglia
Thomas P. Singer
Thomas P. Singer University of California, San Francisco

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