World's Best Scientists 2026 revealed!

D-Index & Metrics

Biology and Biochemistry

D-Index
80
Citations
18839
World Ranking
4163
National Ranking
2037

James P. Simmer 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 James P. Simmer 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: 254 publications — 68th percentile

68% of scientists in this discipline score the same or lower.

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

James P. Simmer 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 James P. Simmer 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: 80 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Overview

James P. Simmer is affiliated with the University of Michigan-Ann Arbor in the United States. Their research mainly spans the fields of Medicine and Biochemistry, Genetics and Molecular Biology, with a particular focus on molecular biology and genetics as subfields. Their scientific contributions include studies in oral surgery and rheumatology as well.

Their work centers on several topics related to dental and oral health, including:

  • Bone and Dental Protein Studies
  • Dental Development and Anomalies
  • Oral and Maxillofacial Pathology
  • Periodontal Regeneration and Treatments
  • Cleft Lip and Palate Research
  • Oral Microbiology and Periodontitis Research
  • Cell Adhesion Molecules Research

Some of the prominent journals where their research has been published include:

  • Scientific Reports
  • Journal of Personalized Medicine
  • International Journal of Molecular Sciences
  • Journal of Dental Research
  • UNC Libraries

Among their recent published papers are:

  • "Amelogenin phosphorylation regulates tooth enamel formation by stabilizing a transient amorphous mineral precursor," 2020, Journal of Biological Chemistry
  • "How Fluoride Protects Dental Enamel from Demineralization," 2020, Journal of International Society of Preventive and Community Dentistry
  • "Analyses of oligodontia phenotypes and genetic etiologies," 2021, International Journal of Oral Science
  • "A genetic model for the secretory stage of dental enamel formation," 2021, Journal of Structural Biology
  • "Alteration of Exon Definition Causes Amelogenesis Imperfecta," 2020, Journal of Dental Research

James P. Simmer collaborates frequently with several researchers, including:

  • Jan C.-C. Hu
  • Jung-Wook Kim
  • Figen Seymen
  • Shih-Kai Wang
  • Mine Koruyucu

Best Publications

  • The structural biology of the developing dental enamel matrix.

    A.G. Fincham;J. Moradian-Oldak;J.P. Simmer

  • Molecular Mechanisms of Dental Enamel Formation

    J.P. Simmer;A.G. Fincham

  • Hereditary Dentin Defects

    J.-W. Kim;J.P. Simmer

  • Proteinases in developing dental enamel.

    J.D. Bartlett;J.P. Simmer

  • Dental enamel formation and its impact on clinical dentistry

    James P. Simmer;Jan C.C. Hu

  • Enamel formation and amelogenesis imperfecta.

    Jan C C Hu;Yong Hee P Chun;Turki Al Hazzazzi;James P. Simmer

  • Functions of KLK4 and MMP-20 in dental enamel formation.

    Yuhe Lu;Petros Papagerakis;Yasuo Yamakoshi;Jan C.-C. Hu

  • MMP-20 mutation in autosomal recessive pigmented hypomaturation amelogenesis imperfecta

    J-W Kim;J P Simmer;T C Hart;P S Hart

  • Self-assembly of a recombinant amelogenin protein generates supramolecular structures.

    A.G. Fincham;J. Moradian-Oldak;J.P. Simmer;P. Sarte

  • Enamelysin (matrix metalloproteinase 20)-deficient mice display an amelogenesis imperfecta phenotype.

    John J. Caterina;Ziedonis Skobe;Joanne Shi;Yanli Ding

  • Identification and Structural and Functional Characterization of Human Enamelysin (MMP-20)†,‡

    Elena Llano;Alberto M. Pendás;Vera Knäuper;Timo Sorsa

  • Investigation of osteocalcin, osteonectin, and dentin sialophosphoprotein in developing human teeth.

    P Papagerakis;A Berdal;M Mesbah;M Peuchmaur

  • Regulation of Dental Enamel Shape and Hardness

    J.P. Simmer;P. Papagerakis;C.E. Smith;D.C. Fisher

  • Expression, structure, and function of enamel proteinases.

    James P. Simmer;Jan C.-C. Hu

  • Molecular cloning and mRNA tissue distribution of a novel matrix metalloproteinase isolated from porcine enamel organ.

    John D. Bartlett;James P. Simmer;Jun Xue;Henry C. Margolis

  • Characterization of Recombinant Pig Enamelysin Activity and Cleavage of Recombinant Pig and Mouse Amelogenins

    O.H. Ryu;A.G. Fincham;C.-C. Hu;C. Zhang

  • The effect of recombinant mouse amelogenins on the formation and organization of hydroxyapatite crystals in vitro

    Elia Beniash;James P. Simmer;Henry C. Margolis

  • Isolation and characterization of a mouse amelogenin expressed in Escherichia coli

    J. P. Simmer;E. C. Lau;C. C. Hu;T. Aoba

  • Purification, characterization and cloning of enamel matrix serine proteinase 1

    J.P. Simmer;M. Fukae;T. Tanabe;Y. Yamakoshi

  • Hierarchical self-assembly of amelogenin and the regulation of biomineralization at the nanoscale

    Ping An Fang;James F. Conway;Henry C. Margolis;James P. Simmer

Frequent Co-Authors

Jan C.-C. Hu
Jan C.-C. Hu University of Michigan–Ann Arbor
John D. Bartlett
John D. Bartlett The Ohio State University
Charles E. Smith
Charles E. Smith McGill University
Malcolm L. Snead
Malcolm L. Snead University of Southern California
Paul H. Krebsbach
Paul H. Krebsbach University of California, Los Angeles
Murim Choi
Murim Choi Seoul National University
Harold C. Slavkin
Harold C. Slavkin University of Southern California
Yoshihiko Yamada
Yoshihiko Yamada National Institutes of Health
Mary MacDougall
Mary MacDougall University of British Columbia
Antonio Nanci
Antonio Nanci University of Montreal

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Best Scientists Citing James P. Simmer

Trending Scientists

Recently Published Articles