World's Best Scientists 2026 revealed!
Seiji Kojima

Seiji Kojima

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Microbiology 90 698 622 21 17 748 25943
Medicine 94 10556 9910 296 280 921 29494

Seiji Kojima publications per year

The chart shows the history of publications by Seiji Kojima between 1970 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Seiji Kojima published across 56 years, from 1970 to 2025, averaging 34.1 papers a year. Output peaked at 111 publications in 2008. 8 of the 1,908 publications appeared in the last two years.

No. of publications
25 50 75 100
Bar chart. Horizontal axis: year, 1970 to 2025. Vertical axis: number of publications, 0 to 111. Peak 111 publications in 2008. 1970: 2 publications 1971: 0 publications 1972: 1 publication 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 2 publications 1977: 2 publications 1978: 9 publications 1979: 14 publications 1980: 13 publications 1981: 15 publications 1982: 3 publications 1983: 8 publications 1984: 5 publications 1985: 9 publications 1986: 2 publications 1987: 8 publications 1988: 9 publications 1989: 10 publications 1990: 12 publications 1991: 13 publications 1992: 14 publications 1993: 23 publications 1994: 13 publications 1995: 21 publications 1996: 19 publications 1997: 38 publications 1998: 35 publications 1999: 33 publications 2000: 36 publications 2001: 32 publications 2002: 51 publications 2003: 42 publications 2004: 47 publications 2005: 66 publications 2006: 97 publications 2007: 83 publications 2008: 111 publications 2009: 94 publications 2010: 82 publications 2011: 99 publications 2012: 84 publications 2013: 98 publications 2014: 96 publications 2015: 99 publications 2016: 74 publications 2017: 53 publications 2018: 70 publications 2019: 39 publications 2020: 53 publications 2021: 39 publications 2022: 15 publications 2023: 7 publications 2024: 7 publications 2025: 1 publication
1970 2025

1,908 publications in total across all disciplines

View publications per year as a table
Seiji Kojima: publications per year, 1970 to 2025
Year Publications
1970 2
1971 0
1972 1
1973 0
1974 0
1975 0
1976 2
1977 2
1978 9
1979 14
1980 13
1981 15
1982 3
1983 8
1984 5
1985 9
1986 2
1987 8
1988 9
1989 10
1990 12
1991 13
1992 14
1993 23
1994 13
1995 21
1996 19
1997 38
1998 35
1999 33
2000 36
2001 32
2002 51
2003 42
2004 47
2005 66
2006 97
2007 83
2008 111
2009 94
2010 82
2011 99
2012 84
2013 98
2014 96
2015 99
2016 74
2017 53
2018 70
2019 39
2020 53
2021 39
2022 15
2023 7
2024 7
2025 1
Total 1,908
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Seiji Kojima publication distribution in Microbiology in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Microbiology in 2026. The highlighted bar marks where Seiji Kojima sits on this spectrum.

No. of scientists
50 100 150 200 250
Bar chart with 64 bars. Horizontal axis: publications, 55–64 to 679+. Vertical axis: number of scientists, 0 to 288. Most scientists, 288, have 135–144 publications. The last bar groups every scientist with 679 publications or more. The highlighted bar, 679+ publications, is where this scientist sits. 55–64 publications: 8 scientists 65–74 publications: 29 scientists 75–84 publications: 55 scientists 85–94 publications: 112 scientists 95–104 publications: 137 scientists 105–114 publications: 190 scientists 115–124 publications: 235 scientists 125–134 publications: 234 scientists 135–144 publications: 288 scientists 145–154 publications: 265 scientists 155–164 publications: 264 scientists 165–174 publications: 253 scientists 175–184 publications: 276 scientists 185–194 publications: 190 scientists 195–204 publications: 234 scientists 205–214 publications: 208 scientists 215–224 publications: 198 scientists 225–234 publications: 155 scientists 235–244 publications: 161 scientists 245–254 publications: 160 scientists 255–264 publications: 146 scientists 265–274 publications: 139 scientists 275–284 publications: 148 scientists 285–294 publications: 115 scientists 295–304 publications: 96 scientists 305–314 publications: 88 scientists 315–324 publications: 106 scientists 325–334 publications: 65 scientists 335–344 publications: 76 scientists 345–354 publications: 64 scientists 355–364 publications: 62 scientists 365–374 publications: 65 scientists 375–384 publications: 61 scientists 385–394 publications: 34 scientists 395–404 publications: 44 scientists 405–414 publications: 36 scientists 415–424 publications: 35 scientists 425–434 publications: 29 scientists 435–444 publications: 33 scientists 445–454 publications: 34 scientists 455–464 publications: 25 scientists 465–474 publications: 26 scientists 475–484 publications: 20 scientists 485–494 publications: 19 scientists 495–504 publications: 16 scientists 505–514 publications: 17 scientists 515–524 publications: 23 scientists 525–534 publications: 14 scientists 535–544 publications: 14 scientists 545–554 publications: 18 scientists 555–564 publications: 12 scientists 565–574 publications: 7 scientists 575–584 publications: 9 scientists 585–594 publications: 9 scientists 595–604 publications: 9 scientists 605–614 publications: 7 scientists 615–624 publications: 9 scientists 625–634 publications: 7 scientists 635–644 publications: 4 scientists 645–654 publications: 5 scientists 655–664 publications: 6 scientists 665–674 publications: 7 scientists 675–678 publications: 3 scientists 679+ publications: 99 scientists
55–64 publications 679+

This scientist: 748 publications — 99th percentile

99% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 679 publications or more.

View publications distribution as a table
Number of Microbiology scientists by publication count, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
Publications Scientists This scientist
55–64 8
65–74 29
75–84 55
85–94 112
95–104 137
105–114 190
115–124 235
125–134 234
135–144 288
145–154 265
155–164 264
165–174 253
175–184 276
185–194 190
195–204 234
205–214 208
215–224 198
225–234 155
235–244 161
245–254 160
255–264 146
265–274 139
275–284 148
285–294 115
295–304 96
305–314 88
315–324 106
325–334 65
335–344 76
345–354 64
355–364 62
365–374 65
375–384 61
385–394 34
395–404 44
405–414 36
415–424 35
425–434 29
435–444 33
445–454 34
455–464 25
465–474 26
475–484 20
485–494 19
495–504 16
505–514 17
515–524 23
525–534 14
535–544 14
545–554 18
555–564 12
565–574 7
575–584 9
585–594 9
595–604 9
605–614 7
615–624 9
625–634 7
635–644 4
645–654 5
655–664 6
665–674 7
675–678 3
679+ 99 748
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Seiji Kojima D-index placement in Microbiology in 2026

The chart shows the D-index (discipline H-index) distribution of Microbiology scientists ranked by Research.com in 2026. The highlighted bar marks where Seiji Kojima sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 88 bars. Horizontal axis: D-Index, 40 to 127+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 58 D-Index. The last bar groups every scientist with 127 D-Index or more. The highlighted bar, 90 D-Index, is where this scientist sits. 40 D-Index: 30 scientists 41 D-Index: 86 scientists 42 D-Index: 90 scientists 43 D-Index: 117 scientists 44 D-Index: 122 scientists 45 D-Index: 123 scientists 46 D-Index: 108 scientists 47 D-Index: 110 scientists 48 D-Index: 106 scientists 49 D-Index: 109 scientists 50 D-Index: 129 scientists 51 D-Index: 111 scientists 52 D-Index: 116 scientists 53 D-Index: 127 scientists 54 D-Index: 134 scientists 55 D-Index: 134 scientists 56 D-Index: 112 scientists 57 D-Index: 136 scientists 58 D-Index: 162 scientists 59 D-Index: 151 scientists 60 D-Index: 139 scientists 61 D-Index: 123 scientists 62 D-Index: 126 scientists 63 D-Index: 144 scientists 64 D-Index: 109 scientists 65 D-Index: 103 scientists 66 D-Index: 124 scientists 67 D-Index: 112 scientists 68 D-Index: 103 scientists 69 D-Index: 131 scientists 70 D-Index: 94 scientists 71 D-Index: 93 scientists 72 D-Index: 96 scientists 73 D-Index: 92 scientists 74 D-Index: 80 scientists 75 D-Index: 66 scientists 76 D-Index: 87 scientists 77 D-Index: 60 scientists 78 D-Index: 73 scientists 79 D-Index: 59 scientists 80 D-Index: 57 scientists 81 D-Index: 55 scientists 82 D-Index: 47 scientists 83 D-Index: 77 scientists 84 D-Index: 50 scientists 85 D-Index: 45 scientists 86 D-Index: 42 scientists 87 D-Index: 41 scientists 88 D-Index: 32 scientists 89 D-Index: 38 scientists 90 D-Index: 35 scientists 91 D-Index: 34 scientists 92 D-Index: 27 scientists 93 D-Index: 26 scientists 94 D-Index: 33 scientists 95 D-Index: 22 scientists 96 D-Index: 37 scientists 97 D-Index: 22 scientists 98 D-Index: 21 scientists 99 D-Index: 22 scientists 100 D-Index: 30 scientists 101 D-Index: 16 scientists 102 D-Index: 20 scientists 103 D-Index: 17 scientists 104 D-Index: 19 scientists 105 D-Index: 16 scientists 106 D-Index: 19 scientists 107 D-Index: 18 scientists 108 D-Index: 14 scientists 109 D-Index: 10 scientists 110 D-Index: 9 scientists 111 D-Index: 7 scientists 112 D-Index: 11 scientists 113 D-Index: 6 scientists 114 D-Index: 15 scientists 115 D-Index: 10 scientists 116 D-Index: 12 scientists 117 D-Index: 7 scientists 118 D-Index: 10 scientists 119 D-Index: 10 scientists 120 D-Index: 11 scientists 121 D-Index: 2 scientists 122 D-Index: 7 scientists 123 D-Index: 12 scientists 124 D-Index: 5 scientists 125 D-Index: 9 scientists 126 D-Index: 6 scientists 127+ D-Index: 95 scientists
40 D-Index 127+

This scientist: 90 D-Index — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 127 D-Index or more.

View D-Index distribution as a table
Number of Microbiology scientists by D-index, Research.com 2026 ranking edition. Based on 5,513 ranked scientists.
D-Index Scientists This scientist
40 30
41 86
42 90
43 117
44 122
45 123
46 108
47 110
48 106
49 109
50 129
51 111
52 116
53 127
54 134
55 134
56 112
57 136
58 162
59 151
60 139
61 123
62 126
63 144
64 109
65 103
66 124
67 112
68 103
69 131
70 94
71 93
72 96
73 92
74 80
75 66
76 87
77 60
78 73
79 59
80 57
81 55
82 47
83 77
84 50
85 45
86 42
87 41
88 32
89 38
90 35 90
91 34
92 27
93 26
94 33
95 22
96 37
97 22
98 21
99 22
100 30
101 16
102 20
103 17
104 19
105 16
106 19
107 18
108 14
109 10
110 9
111 7
112 11
113 6
114 15
115 10
116 12
117 7
118 10
119 10
120 11
121 2
122 7
123 12
124 5
125 9
126 6
127+ 95
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Overview

Seiji Kojima is affiliated with Nagoya University in Japan and conducts research primarily in the field of Biochemistry, Genetics and Molecular Biology. Their work focuses extensively on Molecular Biology, Genetics, and additionally intersects with Condensed Matter Physics, Cellular and Molecular Neuroscience, and Endocrinology.

Their research contributions cover a variety of topics including:

  • Bacterial Genetics and Biotechnology
  • Micro and Nano Robotics
  • Lipid Membrane Structure and Behavior
  • Protist diversity and phylogeny
  • Photoreceptor and optogenetics research
  • Vibrio bacteria research studies
  • Bacteriophages and microbial interactions

Kojima has frequently published in several scientific journals and platforms. The most frequent publication venues include:

  • bioRxiv (Cold Spring Harbor Laboratory)
  • Genes to Cells
  • Journal of Bacteriology
  • Frontiers in Microbiology
  • The Journal of Biochemistry

Some of Kojima's recent papers illustrate their diverse research focus:

  • Tree of motility - A proposed history of motility systems in the tree of life, 2020, Genes to Cells
  • Two Aldehyde Clearance Systems Are Essential to Prevent Lethal Formaldehyde Accumulation in Mice and Humans, 2020, Molecular Cell
  • Digenic mutations in ALDH2 and ADH5 impair formaldehyde clearance and cause a multisystem disorder, AMeD syndrome, 2020, Science Advances
  • The flagellar motor of Vibrio alginolyticus undergoes major structural remodeling during rotational switching, 2020, eLife
  • Analysis of disease model iPSCs derived from patients with a novel Fanconi anemia-like IBMFS ADH5/ALDH2 deficiency, 2021, Blood

Seiji Kojima has collaborated with various researchers, showing significant co-authorship with:

  • Michio Homma (46 co-publications)
  • Tatsuro Nishikino (21 co-publications)
  • Hiroyuki Terashima (14 co-publications)
  • Norihiro Takekawa (10 co-publications)
  • Katsumi Imada (8 co-publications)

Best Publications

  • Quantitative Analysis of Epstein-Barr Virus Load by Using a Real-Time PCR Assay

    Hiroshi Kimura;Makoto Morita;Yumi Yabuta;Kiyotaka Kuzushima

  • EBV-associated T/NK–cell lymphoproliferative diseases in nonimmunocompromised hosts: prospective analysis of 108 cases

    Hiroshi Kimura;Yoshinori Ito;Shinji Kawabe;Kensei Gotoh

  • The landscape of somatic mutations in Down syndrome-related myeloid disorders

    Kenichi Yoshida;Tsutomu Toki;Yusuke Okuno;Rika Kanezaki

  • Flagellar motility in bacteria structure and function of flagellar motor.

    Hiroyuki Terashima;Seiji Kojima;Michio Homma

  • The mutational spectrum of PTPN11 in juvenile myelomonocytic leukemia and Noonan syndrome/myeloproliferative disease

    Christian P. Kratz;Charlotte M. Niemeyer;Robert P. Castleberry;Mualla Cetin

  • Immunosuppressive therapy using antithymocyte globulin, cyclosporine, and danazol with or without human granulocyte colony-stimulating factor in children with acquired aplastic anemia

    Seiji Kojima;Shigeyoshi Hibi;Yoshiyuki Kosaka;Masuji Yamamoto

  • Somatic SETBP1 mutations in myeloid malignancies

    Hideki Makishima;Kenichi Yoshida;Nhu Nguyen;Bartlomiej Przychodzen

  • Conformational change in the stator of the bacterial flagellar motor.

    Seiji Kojima;David F. Blair

  • The bacterial flagellar motor: structure and function of a complex molecular machine.

    Seiji Kojima;David F Blair

  • Mutations of E3 Ubiquitin Ligase Cbl Family Members Constitute a Novel Common Pathogenic Lesion in Myeloid Malignancies

    Hideki Makishima;Heather Cazzolli;Hadrian Szpurka;Andrew Dunbar

  • Exome sequencing identifies secondary mutations of SETBP1 and JAK3 in juvenile myelomonocytic leukemia

    Hirotoshi Sakaguchi;Yusuke Okuno;Hideki Muramatsu;Kenichi Yoshida

  • Human herpesvirus-6 infection in bone marrow transplantation

    Tetsushi Yoshikawa;Sadao Suga;Yoshizo Asano;Toshihiko Nakashima

  • ACTN1 Mutations Cause Congenital Macrothrombocytopenia

    Shinji Kunishima;Yusuke Okuno;Yusuke Okuno;Kenichi Yoshida;Yuichi Shiraishi

  • Myelodysplastic syndrome and acute myelogenous leukemia as a late clonal complication in children with acquired aplastic anemia.

    Akira Ohara;Seiji Kojima;Nobuyuki Hamajima;Masahiro Tsuchida

  • Defective Epstein-Barr virus in chronic active infection and haematological malignancy.

    Yusuke Okuno;Takayuki Murata;Yoshitaka Sato;Hideki Muramatsu

  • Risk factors for evolution of acquired aplastic anemia into myelodysplastic syndrome and acute myeloid leukemia after immunosuppressive therapy in children

    Seiji Kojima;Akira Ohara;Masahiro Tsuchida;Toru Kudoh

  • Frequent mutations in the GATA-1 gene in the transient myeloproliferative disorder of Down syndrome.

    Gang Xu;Masumi Nagano;Rika Kanezaki;Tsutomu Toki

  • Outcome of 154 patients with severe aplastic anemia who received transplants from unrelated donors: the Japan Marrow Donor Program.

    Seiji Kojima;Takaharu Matsuyama;Shunichi Kato;Hisato Kigasawa

  • Solubilization and purification of the MotA/MotB complex of Escherichia coli.

    Seiji Kojima;David F. Blair

  • Stator assembly and activation mechanism of the flagellar motor by the periplasmic region of MotB

    Seiji Kojima;Katsumi Imada;Mayuko Sakuma;Yuki Sudo

  • Human Herpesvirus 6 Viremia in Bone Marrow Transplant Recipients: Clinical Features and Risk Factors

    Tetsushi Yoshikawa;Yoshizo Asano;Masaru Ihira;Kyoko Suzuki

  • Prognostic value of internal tandem duplication of the FLT3 gene in childhood acute myelogenous leukemia

    Masaru Kondo;Keizo Horibe;Yoshiyuki Takahashi;Kimikazu Matsumoto

Frequent Co-Authors

Michio Homma
Michio Homma Nagoya University
Seishi Ogawa
Seishi Ogawa Kyoto University
Satoru Miyano
Satoru Miyano Tokyo Medical and Dental University
Etsuro Ito
Etsuro Ito Hirosaki University
Yuichi Shiraishi
Yuichi Shiraishi University of Tokyo
kenichi yoshida
kenichi yoshida Kyoto University
Shouichi Ohga
Shouichi Ohga Kyushu University
Toshio Fukuda
Toshio Fukuda Nagoya University
Tatsutoshi Nakahata
Tatsutoshi Nakahata Kyoto University
Hirokazu Kanegane
Hirokazu Kanegane Tokyo Medical and Dental University

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