Yasuji Koyama

3.5k total citations
71 papers, 1.8k citations indexed

About

Yasuji Koyama is a scholar working on Molecular Biology, Pharmacology and Plant Science. According to data from OpenAlex, Yasuji Koyama has authored 71 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 65 papers in Molecular Biology, 23 papers in Pharmacology and 20 papers in Plant Science. Recurrent topics in Yasuji Koyama's work include Fungal and yeast genetics research (34 papers), Microbial Natural Products and Biosynthesis (18 papers) and Biofuel production and bioconversion (12 papers). Yasuji Koyama is often cited by papers focused on Fungal and yeast genetics research (34 papers), Microbial Natural Products and Biosynthesis (18 papers) and Biofuel production and bioconversion (12 papers). Yasuji Koyama collaborates with scholars based in Japan, China and United States. Yasuji Koyama's co-authors include Tadashi Takahashi, Tsutomu Masuda, Masahiro Ogawa, Feng Jin, Masafumi Tokuoka, Yasutomo Shinohara, Katsuhiko Kitamoto, Tetsuo Kobayashi, Kenichiro Matsushima and K. Ito and has published in prestigious journals such as SHILAP Revista de lepidopterología, Applied and Environmental Microbiology and Analytical Biochemistry.

In The Last Decade

Yasuji Koyama

71 papers receiving 1.8k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yasuji Koyama Japan 26 1.3k 588 519 334 312 71 1.8k
Masayuki Machida Japan 18 998 0.8× 376 0.6× 385 0.7× 229 0.7× 240 0.8× 45 1.4k
Ramón I. Santamaría Spain 26 1.3k 1.0× 606 1.0× 762 1.5× 732 2.2× 422 1.4× 64 2.1k
Maria A. Dingemanse Netherlands 13 1.0k 0.8× 625 1.1× 275 0.5× 215 0.6× 144 0.5× 14 1.5k
José Luis Revuelta Spain 33 2.3k 1.8× 543 0.9× 144 0.3× 152 0.5× 495 1.6× 80 2.9k
Takeshi Uozumi Japan 27 1.5k 1.1× 425 0.7× 182 0.4× 709 2.1× 486 1.6× 138 2.1k
Sanford J. Silverman United States 24 1.8k 1.4× 698 1.2× 125 0.2× 102 0.3× 359 1.2× 41 2.4k
Yoji Hata Japan 25 1.3k 1.0× 330 0.6× 136 0.3× 671 2.0× 557 1.8× 77 1.9k
Masahiro Nakajima Japan 28 589 0.4× 1.0k 1.7× 104 0.2× 545 1.6× 291 0.9× 109 1.9k
Hyeon‐Su Ro South Korea 20 657 0.5× 434 0.7× 311 0.6× 120 0.4× 141 0.5× 64 1.2k
Christopher D. Reeves United States 21 1.1k 0.9× 450 0.8× 1.1k 2.1× 479 1.4× 83 0.3× 39 1.9k

Countries citing papers authored by Yasuji Koyama

Since Specialization
Citations

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

Fields of papers citing papers by Yasuji Koyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Yasuji Koyama

This figure shows the co-authorship network connecting the top 25 collaborators of Yasuji Koyama. A scholar is included among the top collaborators of Yasuji Koyama 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 Yasuji Koyama. Yasuji Koyama 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.
Ogawa, Masahiro, Ryouichi Fukuda, Ryo Iwama, Yasuji Koyama, & Hiroyuki Horiuchi. (2023). srdA mutations suppress the rseA/cpsA deletion mutant conidiation defect in Aspergillus nidulans. Scientific Reports. 13(1). 4285–4285. 3 indexed citations
2.
Castro, Patrícia Alves de, Ana Cristina Colabardini, Maria Augusta Crivelente Horta, et al.. (2022). Regulation of gliotoxin biosynthesis and protection in Aspergillus species. PLoS Genetics. 18(1). e1009965–e1009965. 23 indexed citations
3.
Tomita, Hiroya, et al.. (2020). Discovery of the 2,4′‐Dihydroxy‐3′‐methoxypropiophenone Biosynthesis Genes in Aspergillus oryzae. ChemBioChem. 22(1). 203–211. 1 indexed citations
4.
Miao, Zhuang, Zhimin Zhang, Long Jin, et al.. (2019). The Basic-Region Helix-Loop-Helix Transcription Factor DevR Significantly Affects Polysaccharide Metabolism in Aspergillus oryzae. Applied and Environmental Microbiology. 85(8). 10 indexed citations
5.
Ogawa, Masahiro, et al.. (2019). A unique Zn(II)2-Cys6-type protein, KpeA, is involved in secondary metabolism and conidiation in Aspergillus oryzae. Fungal Genetics and Biology. 127. 35–44. 27 indexed citations
6.
Kunitake, Emi, Yuji Noguchi, Shuhei Ishikawa, et al.. (2018). Comparison of the paralogous transcription factors AraR and XlnR in Aspergillus oryzae. Current Genetics. 64(6). 1245–1260. 18 indexed citations
7.
Jin, Feng‐Jie, Pei Han, Zhuang Miao, et al.. (2017). Comparative proteomic analysis: SclR is importantly involved in carbohydrate metabolism in Aspergillus oryzae. Applied Microbiology and Biotechnology. 102(1). 319–332. 9 indexed citations
8.
9.
Jin, Feng, et al.. (2013). Efficient formation of heterokaryotic sclerotia in the filamentous fungus Aspergillus oryzae. Applied Microbiology and Biotechnology. 98(1). 325–334. 20 indexed citations
10.
Ito, K., et al.. (2013). Identification of the Glutaminase Genes ofAspergillus sojaeInvolved in Glutamate Production during Soy Sauce Fermentation. Bioscience Biotechnology and Biochemistry. 77(9). 1832–1840. 28 indexed citations
11.
Ito, K., Kenichiro Matsushima, & Yasuji Koyama. (2012). Gene Cloning, Purification, and Characterization of a Novel Peptidoglutaminase-Asparaginase from Aspergillus sojae. Applied and Environmental Microbiology. 78(15). 5182–5188. 18 indexed citations
12.
13.
Tamano, Koichi, Tomoko Ishii, Yasunobu Terabayashi, et al.. (2007). The β-1,3-Exoglucanase GeneexgA(exg1) ofAspergillus oryzaeIs Required to Catabolize Extracellular Glucan, and Is Induced in Growth on a Solid Surface. Bioscience Biotechnology and Biochemistry. 71(4). 926–934. 47 indexed citations
14.
Tamano, Koichi, Motoaki Sano, Noriko Yamane, et al.. (2007). Transcriptional regulation of genes on the non-syntenic blocks of Aspergillus oryzae and its functional relationship to solid-state cultivation. Fungal Genetics and Biology. 45(2). 139–151. 42 indexed citations
15.
Takahashi, Tadashi, Tsutomu Masuda, & Yasuji Koyama. (2006). Enhanced gene targeting frequency in ku70 and ku80 disruption mutants of Aspergillus sojae and Aspergillus oryzae. Molecular Genetics and Genomics. 275(5). 460–470. 148 indexed citations
16.
Takahashi, Tadashi, et al.. (2004). Efficient gene disruption in the koji -mold Aspergillus sojae using a novel variation of the positive-negative method. Molecular Genetics and Genomics. 272(3). 344–352. 43 indexed citations
17.
Ito, K., et al.. (2004). Molecular cloning, overexpression, and purification of Micrococcus luteus K-3-type glutaminase from Aspergillus oryzae RIB40. Protein Expression and Purification. 38(2). 272–278. 22 indexed citations
18.
Ichikawa, Toshio, Hiroshi Sasaki, Hideaki Koike, et al.. (1997). Crystallization and Preliminary Crystallographic Analysis of the Sarcosine Oxidase fromBacillussp. NS-129. Journal of Structural Biology. 120(1). 109–111. 2 indexed citations
19.
Nishimura, Ikuko, et al.. (1996). Cloning and expression of pyranose oxidase cDNA from Coriolus versicolor in Escherichia coli. Journal of Biotechnology. 52(1). 11–20. 47 indexed citations
20.
Nakano, Eiichi, Yasuji Koyama, Masaru Suzuki, & Tsutomu Masuda. (1991). Development of Bacteriophage Vectors for the Industrial Use and Their Application to the Production of Diagnostic Enzymes.. Nippon Nōgeikagaku Kaishi. 65(10). 1475–1481. 2 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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