World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
82
Citations
21247
World Ranking
3741
National Ranking
1854

I. R. Lehman publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where I. R. Lehman sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 184 publications — 43rd percentile

43% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

I. R. Lehman D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where I. R. Lehman sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 82 D-Index — 82nd percentile

82% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Research.com Recognitions

  • 1977 - Member of the National Academy of Sciences
  • 1973 - Fellow of the American Academy of Arts and Sciences

Overview

What is he best known for?

The fields of study he is best known for:

  • DNA
  • Gene
  • Enzyme

I. R. Lehman spends much of his time researching Biochemistry, DNA, Escherichia coli, Polynucleotide and Deoxyribonucleases. Biochemistry and DNA clamp are frequently intertwined in his study. I. R. Lehman has researched DNA in several fields, including Enzymatic synthesis and Deoxyadenine Nucleotides.

His Escherichia coli research incorporates themes from Klenow fragment, Exonuclease and Phosphatase. As a part of the same scientific study, he usually deals with the Polynucleotide, concentrating on Deoxyribonuclease and frequently concerns with Deoxyribonucleic acid polymerase and Nucleotidases. His Deoxyribonucleases research integrates issues from RNA and Phosphodiesterase.

His most cited work include:

  • Enzymatic synthesis of deoxyribonucleic acid. XXXII. Replication of duplex deoxyribonucleic acid by polymerase at a single strand break. (334 citations)
  • The deoxyribonucleases of Escherichia coli. I. Purification and properties of a phosphodiesterase. (306 citations)
  • A DEOXYRIBONUCLEIC ACID PHOSPHATASE-EXONUCLEASE FROM ESCHERICHIA COLI. II. CHARACTERIZATION OF THE EXONUCLEASE ACTIVITY. (305 citations)

What are the main themes of his work throughout his whole career to date?

I. R. Lehman mainly focuses on Biochemistry, Molecular biology, DNA, Escherichia coli and DNA polymerase. His study in Enzyme, Polynucleotide, Nucleotide, DNA ligase and Endonuclease falls within the category of Biochemistry. His Molecular biology study integrates concerns from other disciplines, such as Okazaki fragments, ICP8, DNA polymerase II, Primase and DNA replication.

The DNA polymerase II study combines topics in areas such as Klenow fragment, DNA clamp and Circular bacterial chromosome. I. R. Lehman combines subjects such as Enzymatic synthesis, Phosphodiester bond, Recombinant DNA and Deoxyadenine Nucleotides with his study of DNA. His Escherichia coli research is multidisciplinary, relying on both Deoxyribonucleases, Mutant and Cofactor.

He most often published in these fields:

  • Biochemistry (63.44%)
  • Molecular biology (56.99%)
  • DNA (48.39%)

What were the highlights of his more recent work (between 1986-2016)?

  • Molecular biology (56.99%)
  • Primase (17.20%)
  • DNA (48.39%)

In recent papers he was focusing on the following fields of study:

The scientist’s investigation covers issues in Molecular biology, Primase, DNA, Herpes simplex virus and ICP8. I. R. Lehman has included themes like Binding protein, DNA polymerase II, DNA polymerase, Single-stranded binding protein and DNA replication in his Molecular biology study. His Primase study combines topics in areas such as Primosome and Helicase.

His DNA research entails a greater understanding of Biochemistry. His work on Enzyme, Nucleotide, Protein subunit and DNA helicase activity is typically connected to ATP hydrolysis as part of general Biochemistry study, connecting several disciplines of science. His research investigates the link between Herpes simplex virus and topics such as Viral replication that cross with problems in Origin of replication.

Between 1986 and 2016, his most popular works were:

  • Herpes simplex virus DNA replication. (293 citations)
  • Herpes simplex virus 1 helicase-primase: a complex of three herpes-encoded gene products (182 citations)
  • DNA polymerase alpha (120 citations)

In his most recent research, the most cited papers focused on:

  • DNA
  • Gene
  • Enzyme

I. R. Lehman focuses on Molecular biology, Single-stranded binding protein, DNA replication, DNA polymerase and Herpes simplex virus. His Molecular biology research incorporates elements of ICP8, Primase and Binding site. His DNA replication study incorporates themes from DNA polymerase II and Cell biology.

I. R. Lehman focuses mostly in the field of Herpes simplex virus, narrowing it down to topics relating to DNA and, in certain cases, Recombinant DNA, Virus and Gene. His Binding protein research is classified as research in Biochemistry. His Biochemistry study frequently links to other fields, such as Single-strand DNA-binding protein.

Best Publications

  • Enzymatic Synthesis of Deoxyribonucleic Acid I. PREPARATION OF SUBSTRATES AND PARTIAL PURIFICATION OF AN ENZYME FROM ESCHERICHIA COLI

    I. R. Lehman;Maurice J. Bessman;Ernest S. Simms;Arthur Kornberg

  • Enzymatic synthesis of deoxyribonucleic acid. XXXII. Replication of duplex deoxyribonucleic acid by polymerase at a single strand break.

    Regis B. Kelly;Nicholas R. Cozzarelli;Murray P. Deutscher;I. R. Lehman

  • A DEOXYRIBONUCLEIC ACID PHOSPHATASE-EXONUCLEASE FROM ESCHERICHIA COLI. II. CHARACTERIZATION OF THE EXONUCLEASE ACTIVITY.

    Charles C. Richardson;I. R. Lehman;Arthur Kornberg

  • THE DEOXYRIBONUCLEASES OF ESCHERICHIA COLI. V. ON THE SPECIFICITY OF EXONUCLEASE I (PHOSPHODIESTERASE).

    I. R. Lehman;A. L. Nussbaum

  • The deoxyribonucleases of Escherichia coli. I. Purification and properties of a phosphodiesterase.

    Lehman Ir

  • Enzymatic synthesis of deoxyribonucleic acid. VII. Synthesis of a polymer of deoxyadenylate and deoxythymidylate

    H. K. Schachman;H. K. Schachman;H. K. Schachman;Julius Adler;Julius Adler;Julius Adler;Charles M. Radding;Charles M. Radding;Charles M. Radding;I. R. Lehman;I. R. Lehman;I. R. Lehman

  • Herpes simplex virus DNA replication.

    Paul E. Boehmer;I. R. Lehman

  • Initiation of general recombination catalyzed in vitro by the recA protein of Escherichia coli.

    K McEntee;G M Weinstock;I R Lehman

  • ATP-dependent renaturation of DNA catalyzed by the recA protein of Escherichia coli

    G M Weinstock;K McEntee;I R Lehman

  • Binding of the recA protein of Escherichia coli to single- and double-stranded DNA

    K McEntee;G M Weinstock;I R Lehman

  • Transient accumulation of Okazaki fragments as a result of uracil incorporation into nascent DNA

    Bik-Kwoon Tye;Per-Olof Nyman;I. R. Lehman;Steven Hochhauser

  • Enzymatic synthesis of deoxyribonucleic acid. II. General properties of the reaction.

    Maurice J. Bessman;I. R. Lehman;Ernest S. Simms;Arthur Kornberg

  • The deoxyribonucleases of Escherichia coli. II. Purification and properties of a ribonucleic acid-inhibitable endonuclease.

    Lehman Ir;Roussos Gg;Pratt Ea

  • recA protein-catalyzed strand assimilation: stimulation by Escherichia coli single-stranded DNA-binding protein.

    Kevin McEntee;George M. Weinstock;I. R. Lehman

  • Herpes simplex virus 1 helicase-primase: a complex of three herpes-encoded gene products

    James J. Crute;Tatsuya Tsurumi;Liang Zhu;Sandra K. Weller

  • On the structure of the glucosylated hydroxymethylcytosine nucleotides of coliphages T2, T4, and T6.

    I.R. Lehman;E.A. Pratt

  • THE DEOXYRIBONUCLEASES OF ESCHERICHIA COLI. IV. AN EXONUCLEASE ACTIVITY PRESENT IN PURIFIED PREPARATIONS OF DEOXYRIBONUCLEIC ACID POLYMERASE.

    I.R. Lehman;Charles C. Richardson

  • Branched DNA molecules: intermediates in T4 recombination.

    Thomas R. Broker;I.R. Lehman

  • Replication of Herpes Simplex Virus DNA

    I. R. Lehman;Paul E. Boehmer

  • Linkage of polynucleotides through phosphodiester bonds by an enzyme from Escherichia coli.

    Baldomero M. Olivera;I. R. Lehman

Frequent Co-Authors

Arthur Kornberg
Arthur Kornberg Stanford University
Paul Modrich
Paul Modrich Duke University
Bik Kwoon Tye
Bik Kwoon Tye Cornell University
Baldomero M. Olivera
Baldomero M. Olivera University of Utah
Edward S. Mocarski
Edward S. Mocarski Emory University
Zach W. Hall
Zach W. Hall University of California, San Francisco
Howard K. Schachman
Howard K. Schachman University of California, Berkeley
Charles C. Richardson
Charles C. Richardson Harvard University
Julius Adler
Julius Adler University of Wisconsin–Madison
Laurie S. Kaguni
Laurie S. Kaguni Michigan State University

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Best Scientists Citing I. R. Lehman

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