Seiji Kojima

1.3k total citations
30 papers, 1.1k citations indexed

About

Seiji Kojima is a scholar working on Molecular Biology, Genetics and Plant Science. According to data from OpenAlex, Seiji Kojima has authored 30 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Molecular Biology, 11 papers in Genetics and 8 papers in Plant Science. Recurrent topics in Seiji Kojima's work include Bacterial Genetics and Biotechnology (11 papers), Photosynthetic Processes and Mechanisms (8 papers) and Polyamine Metabolism and Applications (6 papers). Seiji Kojima is often cited by papers focused on Bacterial Genetics and Biotechnology (11 papers), Photosynthetic Processes and Mechanisms (8 papers) and Polyamine Metabolism and Applications (6 papers). Seiji Kojima collaborates with scholars based in Japan, Germany and United States. Seiji Kojima's co-authors include Hiroshi Nikaido, David F. Blair, Etsuko Sugawara, Tomonobu Kusano, Timothy F. Braun, Laith Q. Al‐Mawsawi, G. H. M. Sagor, Thomas Berberich, Saeko Tochigi and Yoshiyuki Kamio and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Nature Communications.

In The Last Decade

Seiji Kojima

29 papers receiving 1.0k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Seiji Kojima Japan 17 670 346 214 175 161 30 1.1k
Sebastián Poggio Mexico 17 701 1.0× 415 1.2× 137 0.6× 90 0.5× 262 1.6× 46 947
Christian Spangler Germany 10 618 0.9× 328 0.9× 110 0.5× 65 0.4× 98 0.6× 10 867
Axel Müller United Kingdom 13 807 1.2× 358 1.0× 39 0.2× 340 1.9× 185 1.1× 16 1.3k
Natalia Tschowri Germany 18 999 1.5× 586 1.7× 162 0.8× 168 1.0× 248 1.5× 29 1.4k
Jürgen Lassak Germany 20 1.4k 2.1× 516 1.5× 64 0.3× 81 0.5× 343 2.1× 37 1.7k
Ruth Daniels Belgium 11 716 1.1× 249 0.7× 83 0.4× 275 1.6× 164 1.0× 15 1.1k
Wieland Steinchen Germany 24 1.1k 1.7× 691 2.0× 126 0.6× 166 0.9× 321 2.0× 61 1.5k
Florian Altegoer Germany 20 735 1.1× 418 1.2× 55 0.3× 198 1.1× 204 1.3× 38 1.0k
Amanda Miguel United States 9 648 1.0× 550 1.6× 190 0.9× 69 0.4× 306 1.9× 11 1.1k
Beat Christen Switzerland 18 1.5k 2.2× 785 2.3× 186 0.9× 252 1.4× 323 2.0× 25 2.0k

Countries citing papers authored by Seiji Kojima

Since Specialization
Citations

This map shows the geographic impact of Seiji Kojima's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Seiji Kojima with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Seiji Kojima more than expected).

Fields of papers citing papers by Seiji Kojima

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Seiji Kojima. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Seiji Kojima. The network helps show where Seiji Kojima may publish in the future.

Co-authorship network of co-authors of Seiji Kojima

This figure shows the co-authorship network connecting the top 25 collaborators of Seiji Kojima. A scholar is included among the top collaborators of Seiji Kojima based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Seiji Kojima. Seiji Kojima is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Kera, Kota, Tomoko Takagi, Noriko Nagata, et al.. (2024). Na + -driven pH regulation by Na+/H+ antiporters promotes photosynthetic efficiency in cyanobacteria. PLANT PHYSIOLOGY. 197(1). 1 indexed citations
2.
Hijikata, Atsushi, Seiji Kojima, Tsuyoshi Shirai, et al.. (2023). Changes in the hydrophobic network of the FliGMC domain induce rotational switching of the flagellar motor. iScience. 26(8). 107320–107320.
3.
Kojima, Seiji, Ken Kimura, Ginga Shimakawa, et al.. (2022). Order-of-magnitude enhancement in photocurrent generation of Synechocystis sp. PCC 6803 by outer membrane deprivation. Nature Communications. 13(1). 3067–3067. 31 indexed citations
4.
Takekawa, Norihiro, Duy Phuoc Tran, Jun-ichi Kishikawa, et al.. (2022). Structure of MotA, a flagellar stator protein, from hyperthermophile. Biochemical and Biophysical Research Communications. 631. 78–85. 5 indexed citations
5.
Kojima, Seiji, Masayuki Iwamoto, Shigetoshi Oiki, Saeko Tochigi, & Hideyuki Takahashi. (2018). Thylakoid membranes contain a non-selective channel permeable to small organic molecules. Journal of Biological Chemistry. 293(20). 7777–7785. 4 indexed citations
6.
7.
Sugawara, Etsuko, Seiji Kojima, & Hiroshi Nikaido. (2016). Klebsiella pneumoniae Major Porins OmpK35 and OmpK36 Allow More Efficient Diffusion of β-Lactams than Their Escherichia coli Homologs OmpF and OmpC. Journal of Bacteriology. 198(23). 3200–3208. 106 indexed citations
8.
Kojima, Seiji, Koji Muramoto, & Tomonobu Kusano. (2016). Outer Membrane Proteins Derived from Non-cyanobacterial Lineage Cover the Peptidoglycan of Cyanophora paradoxa Cyanelles and Serve as a Cyanelle Diffusion Channel. Journal of Biological Chemistry. 291(38). 20198–20209. 8 indexed citations
9.
10.
Sagor, G. H. M., Thomas Berberich, Seiji Kojima, Masaru Niitsu, & Tomonobu Kusano. (2016). Spermine modulates the expression of two probable polyamine transporter genes and determines growth responses to cadaverine in Arabidopsis. Plant Cell Reports. 35(6). 1247–1257. 10 indexed citations
11.
Sagor, G. H. M., Siyuan Zhang, Seiji Kojima, et al.. (2016). Reducing Cytoplasmic Polyamine Oxidase Activity in Arabidopsis Increases Salt and Drought Tolerance by Reducing Reactive Oxygen Species Production and Increasing Defense Gene Expression. Frontiers in Plant Science. 7. 214–214. 49 indexed citations
12.
Kaneko, Jun, Naoki Abe, Seiji Kojima, et al.. (2015). Complete genome sequence of Selenomonas ruminantium subsp. lactilytica will accelerate further understanding of the nature of the class Negativicutes. FEMS Microbiology Letters. 362(9). 7 indexed citations
13.
Sagor, G. H. M., Dong Wook Kim, Seiji Kojima, et al.. (2015). The polyamine oxidase from lycophyteSelaginella lepidophylla (SelPAO5), unlike that of angiosperms, back‐converts thermospermine to norspermidine. FEBS Letters. 589(20PartB). 3071–3078. 22 indexed citations
14.
Sagor, G. H. M., Dong Woon Kim, Thomas Berberich, et al.. (2015). The polyamine spermine induces the unfolded protein response via the MAPK cascade in Arabidopsis. Frontiers in Plant Science. 6. 687–687. 15 indexed citations
15.
Kojima, Seiji & Hiroshi Nikaido. (2014). High Salt Concentrations Increase Permeability through OmpC Channels of Escherichia coli. Journal of Biological Chemistry. 289(38). 26464–26473. 54 indexed citations
16.
Kojima, Seiji & Yoshiyuki Kamio. (2012). Molecular Basis for the Maintenance of Envelope Integrity in Selenomonas ruminantium: Cadaverine Biosynthesis and Covalent Modification into the Peptidoglycan Play a Major Role. Journal of Nutritional Science and Vitaminology. 58(3). 153–160. 12 indexed citations
17.
Kusumoto, Akiko, et al.. (2009). Mutational Analysis of the GTP-binding Motif of FlhF which Regulates the Number and Placement of the Polar Flagellum in Vibrio alginolyticus. The Journal of Biochemistry. 146(5). 643–650. 26 indexed citations
18.
Braun, Timothy F., Laith Q. Al‐Mawsawi, Seiji Kojima, & David F. Blair. (2003). Arrangement of Core Membrane Segments in the MotA/MotB Proton-Channel Complex of Escherichia coli. Biochemistry. 43(1). 35–45. 112 indexed citations
19.
Kojima, Seiji, et al.. (1997). Vibrio alginolyticus mutants resistant to phenamil, a specific inhibitor of the sodium-driven flagellar motor. Journal of Molecular Biology. 265(3). 310–318. 33 indexed citations
20.
Kojima, Seiji, Ikuro Kawagishi, & Michio Homma. (1996). Bacterial Sodium-driven Flagellar Motor.. KAGAKU TO SEIBUTSU. 34(11). 730–737. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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