Keizo Shimada

3.0k total citations
102 papers, 2.2k citations indexed

About

Keizo Shimada is a scholar working on Molecular Biology, Renewable Energy, Sustainability and the Environment and Ecology. According to data from OpenAlex, Keizo Shimada has authored 102 papers receiving a total of 2.2k indexed citations (citations by other indexed papers that have themselves been cited), including 84 papers in Molecular Biology, 33 papers in Renewable Energy, Sustainability and the Environment and 29 papers in Ecology. Recurrent topics in Keizo Shimada's work include Photosynthetic Processes and Mechanisms (79 papers), Microbial Community Ecology and Physiology (29 papers) and Algal biology and biofuel production (28 papers). Keizo Shimada is often cited by papers focused on Photosynthetic Processes and Mechanisms (79 papers), Microbial Community Ecology and Physiology (29 papers) and Algal biology and biofuel production (28 papers). Keizo Shimada collaborates with scholars based in Japan, France and United States. Keizo Shimada's co-authors include Katsumi Matsuura, Kenji V. P. Nagashima, Shinichi Takaichi, Akira Hiraishi, Mamoru Mimuro, Niels‐Ulrik Frigaard, Sakiko Nagashima, Teruo Ogawa, Kazuo Shibata and Toshio Satoh and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Biological Chemistry and Biochemistry.

In The Last Decade

Keizo Shimada

96 papers receiving 2.1k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Keizo Shimada Japan 27 1.8k 642 571 375 289 102 2.2k
Katsumi Matsuura Japan 32 2.5k 1.4× 1.1k 1.6× 664 1.2× 463 1.2× 406 1.4× 114 3.0k
Barry L. Marrs United States 32 2.9k 1.7× 1.2k 1.9× 1.1k 2.0× 300 0.8× 310 1.1× 50 3.6k
Robert A. Niederman United States 29 2.5k 1.4× 561 0.9× 720 1.3× 833 2.2× 781 2.7× 84 2.9k
Kazuhito Inoue Japan 26 1.5k 0.8× 404 0.6× 601 1.1× 136 0.4× 212 0.7× 60 1.9k
André Verméglio France 29 2.0k 1.1× 372 0.6× 591 1.0× 414 1.1× 560 1.9× 93 3.1k
Günter Hauska Germany 37 3.6k 2.0× 428 0.7× 939 1.6× 600 1.6× 812 2.8× 98 4.1k
J.B. Jackson United Kingdom 32 2.5k 1.4× 319 0.5× 434 0.8× 554 1.5× 954 3.3× 80 3.2k
M. D. Kamen United States 33 2.6k 1.5× 437 0.7× 744 1.3× 341 0.9× 403 1.4× 92 3.3k
J. Oelze Germany 24 1.4k 0.8× 479 0.7× 915 1.6× 145 0.4× 194 0.7× 95 2.0k
Wolfgang Lockau Germany 29 2.4k 1.4× 498 0.8× 1.1k 2.0× 135 0.4× 250 0.9× 52 2.8k

Countries citing papers authored by Keizo Shimada

Since Specialization
Citations

This map shows the geographic impact of Keizo Shimada'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 Keizo Shimada with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keizo Shimada more than expected).

Fields of papers citing papers by Keizo Shimada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keizo Shimada. 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 Keizo Shimada. The network helps show where Keizo Shimada may publish in the future.

Co-authorship network of co-authors of Keizo Shimada

This figure shows the co-authorship network connecting the top 25 collaborators of Keizo Shimada. A scholar is included among the top collaborators of Keizo Shimada 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 Keizo Shimada. Keizo Shimada 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.
Shibata, Yutaka, Yuki Ikeda, Seiji Taniguchi, et al.. (2006). Energy and electron transfer in the photosynthetic reaction center complex of Acidiphilium rubrum containing Zn-bacteriochlorophyll a studied by femtosecond up-conversion spectroscopy. Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1767(1). 22–30. 17 indexed citations
2.
Tsukatani, Yusuke, Katsumi Matsuura, Shinji Masuda, et al.. (2004). Phylogenetic Distribution of Unusual Triheme to Tetraheme Cytochrome Subunit in the Reaction Center Complex of Purple Photosynthetic Bacteria. Photosynthesis Research. 79(1). 83–91. 34 indexed citations
3.
Maki, Hideaki, Katsumi Matsuura, Keizo Shimada, & Kenji V. P. Nagashima. (2003). Chimeric Photosynthetic Reaction Center Complex of Purple Bacteria Composed of the Core Subunits of Rubrivivax gelatinosus and the Cytochrome Subunit of Blastochloris viridis. Journal of Biological Chemistry. 278(6). 3921–3928. 13 indexed citations
4.
Hanada, Satoshi, Keizo Shimada, & Katsumi Matsuura. (2002). Active and energy-dependent rapid formation of cell aggregates in the thermophilic photosynthetic bacteriumChloroflexus aggregans. FEMS Microbiology Letters. 208(2). 275–279. 12 indexed citations
5.
6.
Hiraishi, Akira & Keizo Shimada. (2001). Aerobic anoxygenic photosynthetic bacteria with zinc-bacteriochlorophyll.. The Journal of General and Applied Microbiology. 47(4). 161–180. 40 indexed citations
7.
Harada, Jiro, Kenji V. P. Nagashima, Shinichi Takaichi, et al.. (2001). Phytoene Desaturase, CrtI, of the Purple Photosynthetic Bacterium, Rubrivivax gelatinosus, Produces both Neurosporene and Lycopene. Plant and Cell Physiology. 42(10). 1112–1118. 45 indexed citations
8.
Masuda, Shinji, Makoto Yoshida, Kenji V. P. Nagashima, Keizo Shimada, & Katsumi Matsuura. (1999). A New Cytochrome Subunit Bound to the Photosynthetic Reaction Center in the Purple Bacterium, Rhodovulum sulfidophilum. Journal of Biological Chemistry. 274(16). 10795–10801. 34 indexed citations
9.
Sakuragi, Yumiko, Niels‐Ulrik Frigaard, Keizo Shimada, & Katsumi Matsuura. (1999). Association of bacteriochlorophyll a with the CsmA protein in chlorosomes of the photosynthetic green filamentous bacterium Chloroflexus aurantiacus. Biochimica et Biophysica Acta (BBA) - Bioenergetics. 1413(3). 172–180. 50 indexed citations
10.
Inoue, Kazuhito, et al.. (1997). DETERMINATION OF NUCLEOTIDE SEQUENCES OF PUTATIVE RegA AND RegB ; OXYGEN SENSITIVE REGULATORY COMPONENTS RELATED TO THE EXPRESSION OF PHOTOSYSTEM in Rhodovulum sulfidophilum and Roseobacter denitrificans. Plant and Cell Physiology. 38. 1 indexed citations
11.
12.
Kobayashi, Masami, Machiko Akiyama, Hideo Kise, et al.. (1996). Is Mg the Sole Central Metal of Chlorophylls ?. Journal of the Mineralogical Society of Japan. 26(2). 117–120. 2 indexed citations
13.
Nagashima, Kenji V. P., Keizo Shimada, & Katsumi Matsuura. (1996). Shortcut of the photosynthetic electron transfer in a mutant lacking the reaction center‐bound cytochrome subunit by gene disruption in a purple bacterium, Rubrivivax gelatinosus. FEBS Letters. 385(3). 209–213. 22 indexed citations
14.
Shimada, Keizo, et al.. (1994). Photo-oxidation of membrane-bound and soluble cytochromec in the green sulfur bacteriumChlorobium tepidum. Photosynthesis Research. 41(1). 125–134. 24 indexed citations
15.
Yamazaki, Tomoko, Yukio Nishimura, Iwao Yamazaki, et al.. (1994). Energy migration in allophycocyanin‐B trimer with a linker polypeptide: Analysis by the principal multi‐component spectral estimation (PMSE) method. FEBS Letters. 353(1). 43–47. 6 indexed citations
16.
17.
Ogawa, Teruo, et al.. (1978). Synergistic action of red and blue light and action spectra for malate formation in guard cells of Vicia faba L.. Planta. 142(1). 61–65. 115 indexed citations
18.
Shimada, Keizo. (1976). . NIPPON KAGAKU KAISHI. 1742–1744.
19.
Shimada, Keizo. (1972). Isopropylation of Toluene by Transalkylation. NIPPON KAGAKU KAISHI. 616–620.
20.
Shimada, Keizo. (1969). Transethylation of Ethyl Group in Aromatic Hydrocarbon. Nippon kagaku zassi. 90(10). 1041–1044.

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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