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Biology and Biochemistry
Japan
2023

D-Index & Metrics

Discipline name D-Index World Ranking National Ranking Publications Citations
Microbiology 104 336 6 673 37824

Koki Horikoshi publications per year

The chart shows the history of publications by Koki Horikoshi between 1958 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Koki Horikoshi published across 68 years, from 1958 to 2025, averaging 10.9 papers a year. Output peaked at 41 publications in 2007. 5 of the 741 publications appeared in the last two years.

No. of publications
10 20 30 40
Bar chart. Horizontal axis: year, 1958 to 2025. Vertical axis: number of publications, 0 to 41. Peak 41 publications in 2007. 1958: 2 publications 1959: 1 publication 1960: 0 publications 1961: 0 publications 1962: 1 publication 1963: 2 publications 1964: 1 publication 1965: 5 publications 1966: 1 publication 1967: 2 publications 1968: 2 publications 1969: 1 publication 1970: 0 publications 1971: 7 publications 1972: 6 publications 1973: 4 publications 1974: 0 publications 1975: 4 publications 1976: 7 publications 1977: 5 publications 1978: 7 publications 1979: 5 publications 1980: 14 publications 1981: 6 publications 1982: 4 publications 1983: 15 publications 1984: 18 publications 1985: 13 publications 1986: 19 publications 1987: 25 publications 1988: 21 publications 1989: 28 publications 1990: 21 publications 1991: 18 publications 1992: 25 publications 1993: 18 publications 1994: 23 publications 1995: 24 publications 1996: 19 publications 1997: 16 publications 1998: 25 publications 1999: 24 publications 2000: 25 publications 2001: 15 publications 2002: 20 publications 2003: 23 publications 2004: 32 publications 2005: 36 publications 2006: 31 publications 2007: 41 publications 2008: 16 publications 2009: 12 publications 2010: 9 publications 2011: 11 publications 2012: 2 publications 2013: 3 publications 2014: 4 publications 2015: 4 publications 2016: 10 publications 2017: 0 publications 2018: 0 publications 2019: 0 publications 2020: 0 publications 2021: 3 publications 2022: 0 publications 2023: 0 publications 2024: 2 publications 2025: 3 publications
1958 2025

741 publications in total across all disciplines

View publications per year as a table
Koki Horikoshi: publications per year, 1958 to 2025
Year Publications
1958 2
1959 1
1960 0
1961 0
1962 1
1963 2
1964 1
1965 5
1966 1
1967 2
1968 2
1969 1
1970 0
1971 7
1972 6
1973 4
1974 0
1975 4
1976 7
1977 5
1978 7
1979 5
1980 14
1981 6
1982 4
1983 15
1984 18
1985 13
1986 19
1987 25
1988 21
1989 28
1990 21
1991 18
1992 25
1993 18
1994 23
1995 24
1996 19
1997 16
1998 25
1999 24
2000 25
2001 15
2002 20
2003 23
2004 32
2005 36
2006 31
2007 41
2008 16
2009 12
2010 9
2011 11
2012 2
2013 3
2014 4
2015 4
2016 10
2017 0
2018 0
2019 0
2020 0
2021 3
2022 0
2023 0
2024 2
2025 3
Total 741
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Koki Horikoshi 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 Koki Horikoshi 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, 665–674 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: 673 publications — 98th percentile

98% 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 7 673
675–678 3
679+ 99
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Koki Horikoshi 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 Koki Horikoshi 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, 104 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: 104 D-Index — 94th percentile

94% 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
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 19 104
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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Research.com Recognitions

  • 2023 - Research.com Biology and Biochemistry in Japan Leader Award

Overview

Koki Horikoshi was affiliated with the Japan Agency for Marine-Earth Science and Technology in Japan. Their research primarily focused on materials science, specifically within the subfields of materials chemistry and cellular and molecular neuroscience.

Their published work addressed topics including photochromic and fluorescence chemistry, porphyrin and phthalocyanine chemistry, as well as photoreceptor and optogenetics research.

Their recent papers included the following:

  • Near-infrared photochemical internalization: design of a distorted zinc phthalocyanine for efficient intracellular delivery of immunotoxins, 2025, RSC Medicinal Chemistry
  • Antimicrobial effects of grapefruit seed extract microfibers against mouse hepatitis virus, Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa, 2024, Journal of Laboratory Animal Science

Koki Horikoshi collaborated frequently with several coauthors throughout their career. These frequent collaborators included:

  • Mikako Hamabe
  • Wakako Dewa
  • Mizue Yuki
  • Eriko Yamada
  • T. Aiba

Their publications appeared in venues such as RSC Medicinal Chemistry and the Journal of Laboratory Animal Science, where they had at least one publication in each.

Best Publications

  • Alkaliphiles: Some Applications of Their Products for Biotechnology

    Koki Horikoshi

  • Rapid detection and quantification of members of the archaeal community by quantitative PCR using fluorogenic probes.

    Ken Takai;Koki Horikoshi

  • Cell proliferation at 122°C and isotopically heavy CH4 production by a hyperthermophilic methanogen under high-pressure cultivation

    Ken Takai;Kentaro Nakamura;Tomohiro Toki;Urumu Tsunogai

  • Biogeographical distribution and diversity of microbes in methane hydrate-bearing deep marine sediments on the Pacific Ocean Margin

    Fumio Inagaki;Takuro Nunoura;Satoshi Nakagawa;Andreas Teske

  • Complete Sequence and Gene Organization of the Genome of a Hyper-thermophilic Archaebacterium, Pyrococcus horikoshii OT3

    Yutaka Kawarabayasi;Mituhiro Sawada;Hiroshi Horikawa;Yuji Haikawa

  • Complete genome sequence of the alkaliphilic bacterium Bacillus halodurans and genomic sequence comparison with Bacillus subtilis

    Hideto Takami;Kaoru Nakasone;Yoshihiro Takaki;Go Maeno

  • Genetic Diversity of Archaea in Deep-Sea Hydrothermal Vent Environments

    Ken Takai;Koki Horikoshi

  • A Pseudomonas thrives in high concentrations of toluene

    Akira Inoue;Koki Horikoshi

  • Microbial Communities Associated with Geological Horizons in Coastal Subseafloor Sediments from the Sea of Okhotsk

    Fumio Inagaki;Masae Suzuki;Ken Takai;Hanako Oida

  • Sulfurovum lithotrophicum gen. nov., sp. nov., a novel sulfur-oxidizing chemolithoautotroph within the e-Proteobacteria isolated from Okinawa Trough hydrothermal sediments

    Fumio Inagaki;Ken Takai;Kenneth H. Nealson;Kenneth H. Nealson;Koki Horikoshi

  • Extremely Barophilic Bacteria Isolated from the Mariana Trench, Challenger Deep, at a Depth of 11,000 Meters

    Chiaki Kato;Lina Li;Yuichi Nogi;Yuka Nakamura

  • Distribution of archaea in a black smoker chimney structure.

    Ken Takai;Tetsushi Komatsu;Fumio Inagaki;Koki Horikoshi

  • Diversity of actinomycetes isolated from Challenger Deep sediment (10,898 m) from the Mariana Trench

    Wasu Pathom-aree;Wasu Pathom-aree;James E. M. Stach;Alan C. Ward;Koki Horikoshi

  • Microbial flora in the deepest sea mud of the Mariana Trench.

    Hideto Takami;Akira Inoue;Fumie Fuji;Koki Horikoshi

  • Sulfurimonas paralvinellae sp. nov., a novel mesophilic, hydrogen- and sulfur-oxidizing chemolithoautotroph within the Epsilonproteobacteria isolated from a deep-sea hydrothermal vent polychaete nest, reclassification of Thiomicrospira denitrificans as Sulfurimonas denitrificans comb. nov. and emended description of the genus Sulfurimonas.

    Ken Takai;Masae Suzuki;Satoshi Nakagawa;Masayuki Miyazaki

  • Purification and some properties of an alkaline xylanase from alkaliphilic Bacillus sp. strain 41M-1.

    S Nakamura;K Wakabayashi;R Nakai;R Aono

  • Sulfurimonas autotrophica gen. nov., sp. nov., a novel sulfur-oxidizing ε-proteobacterium isolated from hydrothermal sediments in the Mid-Okinawa Trough

    Fumio Inagaki;Ken Takai;Hideki Kobayashi;Kenneth H. Nealson;Kenneth H. Nealson

  • Distribution, phylogenetic diversity and physiological characteristics of epsilon-Proteobacteria in a deep-sea hydrothermal field.

    Satoshi Nakagawa;Ken Takai;Fumio Inagaki;Hisako Hirayama

  • Geochemical and microbiological evidence for a hydrogen-based, hyperthermophilic subsurface lithoautotrophic microbial ecosystem (HyperSLiME) beneath an active deep-sea hydrothermal field

    Ken Takai;Toshitaka Gamo;Urumu Tsunogai;Noriko Nakayama

  • Bacterial diversity in deep-sea sediments from different depths

    Lina Li;Chiaki Kato;Koki Horikoshi

  • Estimation of solvent-tolerance of bacteria by the solvent parameter log P

    Akira Inoue;Koki Horikoshi

Frequent Co-Authors

Chiaki Kato
Chiaki Kato Japan Agency for Marine-Earth Science and Technology
Toshiaki Kudo
Toshiaki Kudo Nagasaki University
Ken Takai
Ken Takai Japan Agency for Marine-Earth Science and Technology
Kenneth H. Nealson
Kenneth H. Nealson University of Southern California
Fumio Inagaki
Fumio Inagaki Japan Agency for Marine-Earth Science and Technology
Takuro Nunoura
Takuro Nunoura Japan Agency for Marine-Earth Science and Technology
Yasuhiko Yoshida
Yasuhiko Yoshida Toyo University
Hideki Kobayashi
Hideki Kobayashi Japan Agency for Marine-Earth Science and Technology
William D. Grant
William D. Grant University of Leicester
Alan T. Bull
Alan T. Bull University of Kent

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Related Online Degrees & Career Pathways

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Lastly, healthcare professionals interested in integrative approaches may consider how to become a functional medicine nurse practitioner. This career intersects biology, patient care, and alternative medicine—highlighting the diverse opportunities stemming from a microbiology foundation.

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