World's Best Scientists 2026 revealed!

D-Index & Metrics

Molecular Biology

D-Index
58
Citations
10896
World Ranking
2099
National Ranking
1040

Robert T. Simpson publication distribution in Molecular Biology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Molecular Biology in 2026. The highlighted bar marks where Robert T. Simpson sits on this spectrum.

47–56 publications: 7 scientists 57–66 publications: 17 scientists 67–76 publications: 65 scientists 77–86 publications: 90 scientists 87–96 publications: 125 scientists 97–106 publications: 131 scientists 107–116 publications: 162 scientists 117–126 publications: 177 scientists 127–136 publications: 158 scientists 137–146 publications: 158 scientists 147–156 publications: 146 scientists 157–166 publications: 159 scientists 167–176 publications: 131 scientists 177–186 publications: 110 scientists 187–196 publications: 112 scientists 197–206 publications: 100 scientists 207–216 publications: 89 scientists 217–226 publications: 98 scientists 227–236 publications: 74 scientists 237–246 publications: 72 scientists 247–256 publications: 63 scientists 257–266 publications: 53 scientists 267–276 publications: 54 scientists 277–286 publications: 49 scientists 287–296 publications: 52 scientists 297–306 publications: 43 scientists 307–316 publications: 46 scientists 317–326 publications: 41 scientists 327–336 publications: 42 scientists 337–346 publications: 31 scientists 347–356 publications: 28 scientists 357–366 publications: 29 scientists 367–376 publications: 26 scientists 377–386 publications: 24 scientists 387–396 publications: 24 scientists 397–406 publications: 14 scientists 407–416 publications: 13 scientists 417–426 publications: 20 scientists 427–436 publications: 12 scientists 437–446 publications: 20 scientists 447–456 publications: 11 scientists 457–466 publications: 10 scientists 467–476 publications: 14 scientists 477–486 publications: 14 scientists 487–496 publications: 10 scientists 497–506 publications: 13 scientists 507–516 publications: 13 scientists 517–526 publications: 2 scientists 527–536 publications: 4 scientists 537–546 publications: 6 scientists 547–556 publications: 8 scientists 557–563 publications: 6 scientists 564+ publications: 100 scientists
47 publications 564+

This scientist: 115 publications — 19th percentile

19% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 564 publications or more.

Robert T. Simpson D-index placement in Molecular Biology in 2026

The chart shows the D-index (discipline H-index) distribution of Molecular Biology scientists ranked by Research.com in 2026. The highlighted bar marks where Robert T. Simpson sits on this spectrum.

40–41 D-Index: 36 scientists 42–43 D-Index: 101 scientists 44–45 D-Index: 115 scientists 46–47 D-Index: 121 scientists 48–49 D-Index: 118 scientists 50–51 D-Index: 130 scientists 52–53 D-Index: 106 scientists 54–55 D-Index: 116 scientists 56–57 D-Index: 113 scientists 58–59 D-Index: 129 scientists 60–61 D-Index: 120 scientists 62–63 D-Index: 105 scientists 64–65 D-Index: 131 scientists 66–67 D-Index: 95 scientists 68–69 D-Index: 97 scientists 70–71 D-Index: 106 scientists 72–73 D-Index: 83 scientists 74–75 D-Index: 89 scientists 76–77 D-Index: 77 scientists 78–79 D-Index: 70 scientists 80–81 D-Index: 73 scientists 82–83 D-Index: 60 scientists 84–85 D-Index: 48 scientists 86–87 D-Index: 45 scientists 88–89 D-Index: 50 scientists 90–91 D-Index: 31 scientists 92–93 D-Index: 51 scientists 94–95 D-Index: 43 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 39 scientists 100–101 D-Index: 41 scientists 102–103 D-Index: 29 scientists 104–105 D-Index: 33 scientists 106–107 D-Index: 35 scientists 108–109 D-Index: 20 scientists 110–111 D-Index: 38 scientists 112–113 D-Index: 19 scientists 114–115 D-Index: 28 scientists 116–117 D-Index: 13 scientists 118–119 D-Index: 23 scientists 120–121 D-Index: 16 scientists 122–123 D-Index: 15 scientists 124–125 D-Index: 11 scientists 126–127 D-Index: 21 scientists 128–129 D-Index: 7 scientists 130–131 D-Index: 13 scientists 132–133 D-Index: 14 scientists 134–135 D-Index: 17 scientists 136–137 D-Index: 9 scientists 138–139 D-Index: 8 scientists 140–141 D-Index: 16 scientists 142–143 D-Index: 7 scientists 144 D-Index: 7 scientists 145+ D-Index: 100 scientists
40 D-Index 145+

This scientist: 58 D-Index — 34th percentile

34% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 145 D-Index or more.

Overview

Robert T. Simpson was affiliated with Pennsylvania State University in the United States. Their academic career involved research activities at this institution.

There are no recorded recent papers, co-authors, publication venues, book publications, fields or subfields of study, main topics of work, or awards attributed to this scientist in the available data.

The absence of detailed publication and research information limits the profile to the known affiliation and status of the scientist.

Robert T. Simpson is deceased.

Best Publications

  • Structure of the chromatosome, a chromatin particle containing 160 base pairs of DNA and all the histones.

    Robert T. Simpson

  • Chromatin reconstituted from tandemly repeated cloned DNA fragments and core histones: A model system for study of higher order structure

    Robert T. Simpson;Fritz Thoma;Joel M. Brubaker

  • Structural features of a phased nucleosome core particle.

    Robert T. Simpson;Darrell W. Stafford

  • FUNCTIONAL TYROSYL RESIDUES IN THE ACTIVE CENTER OF BOVINE PANCREATIC CARBOXYPEPTIDASE A.

    Robert T. Simpson;James F. Riordan;Bert L. Vallee

  • Nucleosome positioning can affect the function of a cis-acting DNA element in vivo.

    Robert T. Simpson

  • Structure of chromatin containing extensively acetylated H3 and H4

    Robert T. Simpson

  • Nucleosome positioning: occurrence, mechanisms, and functional consequences.

    Robert T. Simpson

  • The global transcriptional regulators, SSN6 and TUP1, play distinct roles in the establishment of a repressive chromatin structure

    Julia Promisel Cooper;Sharon Y. Roth;Robert T. Simpson

  • Chromatin and core particles formed from the inner histones and synthetic polydeoxyribonucleotides of defined sequence

    Robert T. Simpson;Peter Künzler

  • Nuclease digestion of circular TRP1ARS1 chromatin reveals positioned nucleosomes separated by nuclease-sensitive regions

    Fritz Thoma;Lawrence W. Bergman;Robert T. Simpson

  • Two differentiable classes of metal atoms in alkaline phosphatase of Escherichia coli.

    Robert T. Simpson;Bert L. Vallee

  • Nucleosomes are positioned with base pair precision adjacent to the alpha 2 operator in Saccharomyces cerevisiae

    Mitsuhiro Shimizu;Sharon Y. Roth;Christopher Szent-Gyorgyi;Robert T. Simpson

  • The Biochemical and Phenotypic Characterization of Hho1p, the Putative Linker Histone H1 of Saccharomyces cerevisiae

    Hugh G. Patterton;Carolyn Church Landel;David Landsman;Craig L. Peterson

  • Removal of histone H1 exposes a fifty base pair DNA segment between nucleosomes.

    James P. Whitlock;Robert T. Simpson

  • Circular dichroism of calf liver nucleohistone.

    Robert T. Simpson;Herbert A. Sober

  • Fractionation of chromatin components.

    Shoshana Levy;Robert T. Simpson;Herbert A. Sober

  • Yeast alpha 2 repressor positions nucleosomes in TRP1/ARS1 chromatin.

    S Y Roth;A Dean;R T Simpson

  • Stable nucleosome positioning and complete repression by the yeast alpha 2 repressor are disrupted by amino-terminal mutations in histone H4.

    Sharon Y. Roth;Mitsuhiro Shimizu;Lianna Johnson;Michael Grunstein

  • High-resolution structural analysis of chromatin at specific loci: Saccharomyces cerevisiae silent mating-type locus HMRa.

    Anish Ravindra;Kerstin Weiss;Robert T. Simpson

  • Selective stimulation of nonhistone chromatin protein synthesis in lymphoid cells by phytohemagglutinin.

    Ronald Levy;Shoshana Levy;Steven A. Rosenberg;Robert T. Simpson

Frequent Co-Authors

Bert L. Vallee
Bert L. Vallee Harvard University
Ayusman Sen
Ayusman Sen Pennsylvania State University
Shoshana Levy
Shoshana Levy Stanford University
Ann Dean
Ann Dean National Institutes of Health
William J. Rutter
William J. Rutter University of California, San Francisco
Jerry L. Workman
Jerry L. Workman Stowers Institute for Medical Research
Joram Piatigorsky
Joram Piatigorsky National Institutes of Health
Michael Bustin
Michael Bustin National Institutes of Health
Hong Ma
Hong Ma Pennsylvania State University
James E. Haber
James E. Haber Brandeis University

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