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Molecular Biology

D-Index
68
Citations
12071
World Ranking
1540
National Ranking
780

Buddy Ullman 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 Buddy Ullman 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: 191 publications — 55th percentile

55% of scientists in this discipline score the same or lower.

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

Buddy Ullman 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 Buddy Ullman 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: 68 D-Index — 52nd percentile

52% of scientists in this discipline score the same or lower.

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

Overview

Buddy Ullman is affiliated with Oregon Health & Science University in the United States. Their research spans key areas within biochemistry, genetics, and molecular biology, as well as medicine.

The main fields of study associated with their work include:

  • Biochemistry, Genetics and Molecular Biology
  • Medicine

Within these fields, their research further focuses on subfields such as:

  • Molecular Biology
  • Oncology
  • Cancer Research

Ullman's scientific contributions concentrate on several topics, notably:

  • Ubiquitin and proteasome pathways
  • Peptidase Inhibition and Analysis
  • Signaling Pathways in Disease
  • Protease and Inhibitor Mechanisms

They have recently published multiple papers, primarily addressing proteasome regulation and inhibition mechanisms. Notable examples include:

  • Rapaprotin is Activated by an Endopeptidase to Disassemble 26S Proteasome, 2025, bioRxiv (Cold Spring Harbor Laboratory)
  • Rapaprotin, an Endopeptidase-Activated Proteasome Inhibitor that Induces 26S Disassembly, 2025, Angewandte Chemie
  • Rapaprotin, an Endopeptidase-Activated Proteasome Inhibitor that Induces 26S Disassembly, 2025, Angewandte Chemie International Edition

The venues frequently publishing Ullman's work include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Angewandte Chemie
  • Angewandte Chemie International Edition

Collaboration is a notable aspect of their career. Ullman has worked repeatedly with several coauthors, including:

  • Hanjing Peng
  • Zufeng Guo
  • Wei Li Wang
  • Deyao Yin
  • Shitao Zou

Best Publications

  • Insertional tagging, cloning, and expression of the Toxoplasma gondii hypoxanthine-xanthine-guanine phosphoribosyltransferase gene. Use as a selectable marker for stable transformation.

    Robert G.K. Donald;Darrick Carter;Buddy Ullman;David S. Roos

  • Deoxycytidine kinase-mediated toxicity of deoxyadenosine analogs toward malignant human lymphoblasts in vitro and toward murine L1210 leukemia in vivo

    Dennis A. Carson;Donald B. Wasson;Jonathan Kaye;Buddy Ullman

  • Deoxyadenosine metabolism and cytotoxicity in cultured mouse T lymphoma cells: a model for immunodeficiency disease

    Buddy Ullman;Lorraine J. Gudas;Amos Cohen;David W. Martin

  • Mutator phenotypes in mammalian cell mutants with distinct biochemical defects and abnormal deoxyribonucleoside triphosphate pools.

    Guy Weinberg;Buddy Ullman;David W. Martin

  • Cytotoxicity of 5-fluoro-2'-deoxyuridine: requirement for reduced folate cofactors and antagonism by methotrexate

    Buddy Ullman;Melinda Lee;David W. Martin;Daniel V. Santi

  • Arginase Plays a Pivotal Role in Polyamine Precursor Metabolism in Leishmania CHARACTERIZATION OF GENE DELETION MUTANTS

    Sigrid C. Roberts;Michael J. Tancer;Michelle R. Polinsky;K. Michael Gibson

  • High efficiency plating method for Leishmania promastigotes in semidefined or completely-defined medium.

    David M. Iovannisci;Buddy Ullman

  • Isolation and characterization of purine-nucleoside phosphorylase-deficient T-lymphoma cells and secondary mutants with altered ribonucleotide reductase: Genetic model for immunodeficiency disease

    Buddy Ullman;Lorraine J. Gudas;Shirley M. Clift;David W. Martin

  • Characterization of a cell culture model for the study of adenosine deaminase- and purine nucleoside phosphorylase-deficient immunologic disease

    B. Ullman;A. Cohen;D.W. Martin

  • Multidrug resistance in Leishmania donovani is conferred by amplification of a gene homologous to the mammalian mdr1 gene.

    D M Henderson;C D Sifri;M Rodgers;D F Wirth

  • Deoxyguanosine toxicity in a mouse T lymphoma: Relationship to purine nucleoside phosphorylase-associated immune dysfunction

    Lorraine J. Gudas;Buddy Ullman;Amos Cohen;David W. Martin

  • Characterization of a mutant mouse lymphoma cell with deficient transport of purine and pyrimidine nucleosides.

    A Cohen;B Ullman;D W Martin

  • Effects of mutational loss of adenosine kinase and deoxycytidine kinase on deoxyATP accumulation and deoxyadenosine toxicity in cultured CEM human T-lymphoblastoid cells

    M S Hershfield;J E Fetter;W C Small;A S Bagnara

  • Two high affinity nucleoside transporters in Leishmania donovani.

    Bruce Aronow;Kiran J Kaur;Kathleen McCartan;Buddy Ullman

  • Isolation and functional characterization of the PfNT1 nucleoside transporter gene from Plasmodium falciparum.

    Nicola S. Carter;Choukri Ben Mamoun;Wei Liu;Edilene O. Silva;Edilene O. Silva

  • Crystal structures of Toxoplasma gondii adenosine kinase reveal a novel catalytic mechanism and prodrug binding.

    Maria A Schumacher;Daniel M Scott;Iripam I Mathews;Steven E Ealick

  • Nucleoside and Nucleobase Transporters in Parasitic Protozoa

    Scott M. Landfear;Buddy Ullman;Nicola S. Carter;Marco A. Sanchez

  • Cloning of Leishmania nucleoside transporter genes by rescue of a transport-deficient mutant.

    Gayatri Vasudevan;Nicola S. Carter;Mark E. Drew;Mark E. Drew;Stephen M. Beverley

  • Purine salvage pathways in the Apicomplexan parasite Toxoplasma gondii

    Kshitiz Chaudhary;John A. Darling;Leah M. Fohl;William J. Sullivan

  • Identification and characterization of a polyamine permease from the protozoan parasite Leishmania major

    Marie Pierre Hasne;Buddy Ullman

Frequent Co-Authors

David W. Martin
David W. Martin University of Toronto
Lorraine J. Gudas
Lorraine J. Gudas Cornell University
David S. Roos
David S. Roos University of Pennsylvania
Richard G. Brennan
Richard G. Brennan Duke University
Mary E. Wilson
Mary E. Wilson University of California, San Francisco
Maria A. Schumacher
Maria A. Schumacher Duke University
David W. Christianson
David W. Christianson University of Pennsylvania
Bruce J. Aronow
Bruce J. Aronow Cincinnati Children's Hospital Medical Center
Choukri Ben Mamoun
Choukri Ben Mamoun Yale University
Dyann F. Wirth
Dyann F. Wirth Harvard University

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