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Gregory S. Kopf

D-Index & Metrics

Biology and Biochemistry

D-Index
75
Citations
19395
World Ranking
5335
National Ranking
2527

Gregory S. Kopf 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 Gregory S. Kopf 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: 167 publications — 35th percentile

35% of scientists in this discipline score the same or lower.

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

Gregory S. Kopf 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 Gregory S. Kopf 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: 75 D-Index — 74th percentile

74% of scientists in this discipline score the same or lower.

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

Overview

Gregory S. Kopf is affiliated with the University of Pennsylvania in the United States. Their research primarily focuses on medicine, with a notable concentration on reproductive health and related subfields.

The scientist's main fields of study include:

  • Medicine

The subfields of study represented in their work are:

  • Public Health, Environmental and Occupational Health
  • Pediatrics, Perinatology and Child Health
  • Reproductive Medicine
  • General Health Professions
  • Endocrinology, Diabetes and Metabolism

Kopf's research encompasses several main topics, including:

  • Reproductive Health and Contraception
  • Global Maternal and Child Health
  • Sex and Gender in Healthcare
  • Adolescent Sexual and Reproductive Health
  • Sperm and Testicular Function
  • Hormonal and reproductive studies
  • Ovarian function and disorders

Frequent publication venues for Gregory S. Kopf include:

  • Biology of Reproduction
  • Molecular Aspects of Medicine
  • Molecular Reproduction and Development

Their recent papers illustrate a focus on contraception and reproductive technologies, published mostly within the past five years. Notable publications include:

  • The new contraceptive revolution: developing innovative products outside of industry, 2020, Biology of Reproduction
  • Bridging the gap: advancing multipurpose prevention technologies from the lab into the hands of women, 2020, Biology of Reproduction
  • The urgent need for innovation in contraception, 2023, Biology of Reproduction
  • The uniqueness of on-demand male contraception, 2024, Molecular Aspects of Medicine
  • A tribute: David Lorn Garbers, PhD (1944-2006), 2024, Molecular Reproduction and Development

Kopf has collaborated frequently with several researchers, including:

  • Kavita Nanda
  • Rebecca L. Callahan
  • Neha J. Mehta
  • Bethany Young Holt
  • James Kiarie

Best Publications

  • Capacitation of mouse spermatozoa. I. Correlation between the capacitation state and protein tyrosine phosphorylation.

    P. E. Visconti;J. L. Bailey;G. D. Moore;Dieyun Pan

  • Capacitation of mouse spermatozoa. II. Protein tyrosine phosphorylation and capacitation are regulated by a cAMP-dependent pathway.

    P. E. Visconti;G. D. Moore;J. L. Bailey;P. Leclerc

  • REGULATION OF PROTEIN PHOSPHORYLATION DURING SPERM CAPACITATION

    Pablo E. Visconti;Gregory S. Kopf

  • Egg-to-embryo transition is driven by differential responses to Ca(2+) oscillation number.

    Tom Ducibella;Daniel Huneau;Elizabeth Angelichio;Zhe Xu

  • The “Soluble” Adenylyl Cyclase in Sperm Mediates Multiple Signaling Events Required for Fertilization

    Kenneth C. Hess;Brian H. Jones;Becky Marquez;Yanqiu Chen

  • Regulation of Protein Tyrosine Phosphorylation during Bovine Sperm Capacitation by a Cyclic Adenosine 3',5'-Monophosphate-Dependent Pathway

    Hannah L. Galantino-Homer;Pablo E. Visconti;Gregory S. Kopf

  • Cholesterol Efflux-mediated Signal Transduction in Mammalian Sperm β-CYCLODEXTRINS INITIATE TRANSMEMBRANE SIGNALING LEADING TO AN INCREASE IN PROTEIN TYROSINE PHOSPHORYLATION AND CAPACITATION

    Pablo E. Visconti;Hannah Galantino-Homer;XiaoPing Ning;Grace D. Moore

  • Regulation of protein tyrosine phosphorylation in human sperm by a calcium/calmodulin-dependent mechanism: identification of A kinase anchor proteins as major substrates for tyrosine phosphorylation

    Alfonso Carrera;Jiri Moos;Xiao Ping Ning;George L. Gerton

  • Molecular basis of mammalian egg activation.

    Richard M. Schultz;Gregory S. Kopf

  • The molecular basis of sperm capacitation.

    Pablo E. Visconti;Hannah Galantino‐Homer;Grace D. Moore;Janice L. Bailey

  • Cholesterol efflux-mediated signal transduction in mammalian sperm: cholesterol release signals an increase in protein tyrosine phosphorylation during mouse sperm capacitation.

    Pablo E. Visconti;XiaoPing Ning;Miguel W. Fornés;Juan G. Alvarez

  • Molecular Events Mediating Sperm Activation

    Cynthia R. Ward;Gregory S. Kopf

  • The Mouse Epididymal Transcriptome: Transcriptional Profiling of Segmental Gene Expression in the Epididymis

    Daniel S. Johnston;Scott A. Jelinsky;Hyun J. Bang;Paul DiCandeloro

  • Regulation of human sperm capacitation by a cholesterol efflux-stimulated signal transduction pathway leading to protein kinase A-mediated up-regulation of protein tyrosine phosphorylation

    Joseph E. Osheroff;Pablo E. Visconti;Juan Pablo Valenzuela;Alexander J. Travis

  • Long-term effects of culture of preimplantation mouse embryos on behavior

    David J. Ecker;Paula Stein;Zhe Xu;Carmen J. Williams

  • The role of cholesterol efflux in regulating the fertilization potential of mammalian spermatozoa

    Alexander J. Travis;Gregory S. Kopf

  • Control of the low voltage-activated calcium channel of mouse sperm by egg ZP3 and by membrane hyperpolarization during capacitation

    Christophe Arnoult;Imrana G. Kazam;Pablo E. Visconti;Gregory S. Kopf

  • Involvement of a Na+/HCO-3 cotransporter in mouse sperm capacitation.

    Ignacio A. Demarco;Felipe Espinosa;Jennifer Edwards;Julian Sosnik

  • Roles of bicarbonate, cAMP, and protein tyrosine phosphorylation on capacitation and the spontaneous acrosome reaction of hamster sperm.

    Pablo E. Visconti;J. Stewart-Savage;Aida Blasco;Licia Battaglia

  • Capacitation and acrosome reactions in human spermatozoa monitored by a chlortetracycline fluorescence assay

    Michael A. Lee;Giuliana S. Trucco;Kathleen B. Bechtol;Neil Wummer

Frequent Co-Authors

Richard M. Schultz
Richard M. Schultz University of Pennsylvania
Pablo E. Visconti
Pablo E. Visconti University of Massachusetts Amherst
Bayard T. Storey
Bayard T. Storey University of Pennsylvania
George L. Gerton
George L. Gerton University of Pennsylvania
Victor D. Vacquier
Victor D. Vacquier University of California, San Diego
Jerome F. Strauss
Jerome F. Strauss University of Pennsylvania
Laurinda A. Jaffe
Laurinda A. Jaffe University of Connecticut Health Center
John C. Herr
John C. Herr University of Virginia
Alberto Darszon
Alberto Darszon National Autonomous University of Mexico
David L. Garbers
David L. Garbers The University of Texas Southwestern Medical Center

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Best Scientists Citing Gregory S. Kopf

Rafael A. Fissore

Rafael A. Fissore

University of Massachusetts Amherst

Publications: 92

Richard M. Schultz

Richard M. Schultz

University of Pennsylvania

Publications: 85

Alberto Darszon

Alberto Darszon

National Autonomous University of Mexico

Publications: 83

Pablo E. Visconti

Pablo E. Visconti

University of Massachusetts Amherst

Publications: 79

R. John Aitken

R. John Aitken

University of Newcastle Australia

Publications: 63

Lonny R. Levin

Lonny R. Levin

Cornell University

Publications: 55

Jochen Buck

Jochen Buck

Cornell University

Publications: 54

Brett Nixon

Brett Nixon

University of Newcastle Australia

Publications: 54

Haim Breitbart

Haim Breitbart

Bar-Ilan University

Publications: 47

Christopher L.R. Barratt

Christopher L.R. Barratt

University of Dundee

Publications: 40

Qing-Yuan Sun

Qing-Yuan Sun

Chinese Academy of Sciences

Publications: 36

Mark A. Baker

Mark A. Baker

University of Newcastle Australia

Publications: 36

Moira K O'Bryan

Moira K O'Bryan

University of Melbourne

Publications: 34

George L. Gerton

George L. Gerton

University of Pennsylvania

Publications: 34

Ashok Agarwal

Ashok Agarwal

Cleveland Clinic

Publications: 33

Bart M. Gadella

Bart M. Gadella

Utrecht University

Publications: 33

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