World's Best Scientists 2026 revealed!
Masaharu Ishii

Masaharu Ishii

D-Index & Metrics

Biology and Biochemistry

D-Index
47
Citations
7953
World Ranking
18716
National Ranking
1342

Masaharu Ishii 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 Masaharu Ishii 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: 173 publications — 38th percentile

38% of scientists in this discipline score the same or lower.

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

Masaharu Ishii 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 Masaharu Ishii 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: 47 D-Index — 6th percentile

6% of scientists in this discipline score the same or lower.

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

Overview

Masaharu Ishii is affiliated with the University of Tokyo in Japan and specializes in biochemistry, genetics, and molecular biology. Their research spans various subfields including molecular biology, renewable energy, sustainability and the environment, materials chemistry, ecology, and biomedical engineering.

Their scientific contributions cover multiple topics such as algal biology and biofuel production, photosynthetic processes and mechanisms, heat shock proteins research, enzyme structure and function, microbial community ecology and physiology, protein structure and dynamics, and metalloenzymes and iron-sulfur proteins.

Masaharu Ishii has published work in several research venues, including the EMPIAR dataset, Journal of the American Chemical Society, Bioresource Technology Reports, Algal Research, and Journal of Bioscience and Bioengineering.

Recent publications by Ishii include:

  • Reversible Glutamate Coordination to High-Valent Nickel Protects the Active Site of a [NiFe] Hydrogenase from Oxygen (2022, Journal of the American Chemical Society)
  • Dark mode of microalga - A sustainable and economical solution for microalgal biofuel production and waste treatment (2023, Bioresource Technology Reports)
  • Simple transformation of the filamentous thermophilic cyanobacterium Leptolyngbya sp. KC45 (2022, Algal Research)
  • Regulation of the high-specificity Rubisco genes by the third CbbR-type regulator in a hydrogen-oxidizing bacterium Hydrogenovibrio marinus (2022, Journal of Bioscience and Bioengineering)
  • Unlocking microalgal host-exploring dark-growing microalgae transformation for sustainable high-value phytochemical production (2023, Frontiers in Bioengineering and Biotechnology)

Their frequent co-authors include Masafumi Kameya, Hiroyuki Arai, Kanjana Mahanil, Jeeraporn Pekkoh, and Chayakorn Pumas.

Best Publications

  • Dynamic transition of a methanogenic population in response to the concentration of volatile fatty acids in a thermophilic anaerobic digester.

    Tomoyuki Hori;Shin Haruta;Yoshiyuki Ueno;Masaharu Ishii

  • Construction of a stable microbial community with high cellulose-degradation ability

    S. Haruta;Z. Cui;Z. Huang;M. Li

  • Stable coexistence of five bacterial strains as a cellulose-degrading community.

    Souichiro Kato;Shin Haruta;Zong Jun Cui;Masaharu Ishii

  • Microbial community in anaerobic hydrogen-producing microflora enriched from sludge compost

    Y Ueno;S Haruta;M Ishii;Y Igarashi

  • Effective cellulose degradation by a mixed-culture system composed of a cellulolytic Clostridium and aerobic non-cellulolytic bacteria

    Souichiro Kato;Shin Haruta;Zong Jun Cui;Masaharu Ishii

  • Succession of bacterial and fungal communities during a traditional pot fermentation of rice vinegar assessed by PCR-mediated denaturing gradient gel electrophoresis.

    Shin Haruta;Shintaro Ueno;Isao Egawa;Kazunori Hashiguchi

  • Denaturing gradient gel electrophoresis analyses of microbial community from field-scale composter.

    Mannix Salvador Pedro;Shin Haruta;Masaru Hazaka;Rumiko Shimada

  • Conductive iron oxides accelerate thermophilic methanogenesis from acetate and propionate.

    Chihaya Yamada;Souichiro Kato;Yoshiyuki Ueno;Masaharu Ishii

  • Methanogenic pathway and community structure in a thermophilic anaerobic digestion process of organic solid waste

    Daisuke Sasaki;Tomoyuki Hori;Tomoyuki Hori;Shin Haruta;Shin Haruta;Yoshiyuki Ueno

  • Differential expression of multiple terminal oxidases for aerobic respiration in Pseudomonas aeruginosa

    Takuro Kawakami;Miho Kuroki;Masaharu Ishii;Yasuo Igarashi

  • A novel enzyme, citryl-CoA lyase, catalysing the second step of the citrate cleavage reaction in Hydrogenobacter thermophilus TK-6

    Miho Aoshima;Masaharu Ishii;Yasuo Igarashi

  • Clostridium straminisolvens sp. nov., a moderately thermophilic, aerotolerant and cellulolytic bacterium isolated from a cellulose-degrading bacterial community

    Souichiro Kato;Shin Haruta;Zong Jun Cui;Masaharu Ishii

  • Enzymatic Characterization and In Vivo Function of Five Terminal Oxidases in Pseudomonas aeruginosa

    Hiroyuki Arai;Takuro Kawakami;Tatsuya Osamura;Takehiro Hirai

  • Diversity of a stable enrichment culture which is useful for silage inoculant and its succession in alfalfa silage

    Xiaofen Wang;Shin Haruta;Pu Wang;Masaharu Ishii

  • Characterization of a microorganism isolated from the effluent of hydrogen fermentation by microflora

    Yoshiyuki Ueno;Shin Haruta;Masaharu Ishii;Yasuo Igarashi

  • Transcriptional Regulation of the Flavohemoglobin Gene for Aerobic Nitric Oxide Detoxification by the Second Nitric Oxide-Responsive Regulator of Pseudomonas aeruginosa

    Hiroyuki Arai;Michiko Hayashi;Azusa Kuroi;Masaharu Ishii

  • Network Relationships of Bacteria in a Stable Mixed Culture

    Souichiro Kato;Shin Haruta;Shin Haruta;Zong Jun Cui;Masaharu Ishii

  • Microbial community changes during organic solid waste treatment analyzed by double gradient-denaturing gradient gel electrophoresis and fluorescence in situ hybridization.

    Haruta S;Kondo M;Nakamura K;Aiba H

  • Distinctive Responses of Metabolically Active Microbiota to Acidification in a Thermophilic Anaerobic Digester

    Masateru Akuzawa;Tomoyuki Hori;Tomoyuki Hori;Shin Haruta;Shin Haruta;Yoshiyuki Ueno

  • A novel biotin protein required for reductive carboxylation of 2‐oxoglutarate by isocitrate dehydrogenase in Hydrogenobacter thermophilus TK‐6

    Miho Aoshima;Masaharu Ishii;Yasuo Igarashi

Frequent Co-Authors

Yasuo Igarashi
Yasuo Igarashi Southwest University
Hiroyuki Arai
Hiroyuki Arai University of Tokyo
Naoki Yoshida
Naoki Yoshida University of Tokyo
Akira Yokota
Akira Yokota Tohoku University
Atsushi Ogata
Atsushi Ogata National Institute of Advanced Industrial Science and Technology
Toru Nakayama
Toru Nakayama Tohoku University
Tokuzo Nishino
Tokuzo Nishino Tohoku University
Masaru Tanokura
Masaru Tanokura University of Tokyo
Shinya Fushinobu
Shinya Fushinobu University of Tokyo
Kentaro Shimizu
Kentaro Shimizu University of Zurich

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