Chieko Kumagai

1.5k total citations
47 papers, 1.3k citations indexed

About

Chieko Kumagai is a scholar working on Biotechnology, Molecular Biology and Biomedical Engineering. According to data from OpenAlex, Chieko Kumagai has authored 47 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 32 papers in Biotechnology, 29 papers in Molecular Biology and 14 papers in Biomedical Engineering. Recurrent topics in Chieko Kumagai's work include Enzyme Production and Characterization (26 papers), Fungal and yeast genetics research (18 papers) and Biofuel production and bioconversion (14 papers). Chieko Kumagai is often cited by papers focused on Enzyme Production and Characterization (26 papers), Fungal and yeast genetics research (18 papers) and Biofuel production and bioconversion (14 papers). Chieko Kumagai collaborates with scholars based in Japan. Chieko Kumagai's co-authors include Katsuya Gomi, Katsuhiko Kitamoto, Gakuzo Tamura, Toshitaka Minetoki, Kozo Tsuchiya, Setsuzo Tada, Tadashi Nagashima, Yoji Hata, Masaaki Hamachi and Kenji Ozeki and has published in prestigious journals such as Biochemical Journal, Applied Microbiology and Biotechnology and Bioscience Biotechnology and Biochemistry.

In The Last Decade

Chieko Kumagai

46 papers receiving 1.2k citations

Peers

Countries citing papers authored by Chieko Kumagai

Since Specialization

Citations

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

Fields of papers citing papers by Chieko Kumagai

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Chieko Kumagai

This figure shows the co-authorship network connecting the top 25 collaborators of Chieko Kumagai. A scholar is included among the top collaborators of Chieko Kumagai 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 Chieko Kumagai. Chieko Kumagai is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	The fourth nationwide surveillance of antimicrobial susceptibility against Neisseria gonorrhoeae from male urethritis in Japan, 2021 2025 ·Journal of Infection and Chemotherapy ·Mitsuru Yasuda, Satoshi Takahashi, (unknown), Chieko Kumagai, (unknown), (unknown), (unknown), (unknown), Kanao Kobayashi, Jun Miyazaki, Koichiro Wada, Masahiro Matsumoto, Hiroshi Hayami, Shingo Yamamoto, (unknown), Junko Sato, (unknown), (unknown)	0
2	Molecular Cloning and Characterization of a Transcriptional Activator Gene,amyR, Involved in the Amylolytic Gene Expression inAspergillus oryzae 2000 ·Bioscience Biotechnology and Biochemistry ·Katsuya Gomi, (unknown), Toshitaka Minetoki, Kenji Ozeki, Chieko Kumagai, Naoto OKAZAKI, Yuzuru Iimura	102
3	Insertion Analysis of Putative Functional Elements in the Promoter Region of theAspergillus oryzaeTaka-amylase A Gene (amyB) Using a HeterologousAspergillus nidulans amdS-lacZFusion Gene System 1999 ·Bioscience Biotechnology and Biochemistry ·(unknown), Katsuya Gomi, Katsuhiko Kitamoto, Chieko Kumagai, Gakuzo Tamura	27
4	Improvement of promoter activity by the introduction of multiple copies of the conserved region III sequence, involved in the efficient expression of Aspergillus oryzae amylase-encoding genes 1998 ·Applied Microbiology and Biotechnology ·Toshitaka Minetoki, Chieko Kumagai, Katsuya Gomi, Katsuhiko Kitamoto, Koichi Takahashi	76
5	Cloning and Nucleotide Sequence of the Alcohol Acetyltransferase II Gene (ATF2) fromSaccharomyces cerevisiaeKyokai No. 7 1998 ·Bioscience Biotechnology and Biochemistry ·Naoshi Nagasawa, Takayuki Bogaki, Akihiro Iwamatsu, Masaaki Hamachi, Chieko Kumagai	76
6	Deletion analysis of promoter elements of the Aspergillus oryzae agdA gene encoding α-glucosidase 1996 ·Current Genetics ·Toshitaka Minetoki, Yataro NUNOKAWA, Katsuya Gomi, Katsuhiko Kitamoto, Chieko Kumagai, Gakuzo Tamura	74
7	Cloning and Nucleotide Sequence of the Calmodulin-Encoding Gene (cmdA) fromAspergillus oryzae 1995 ·Bioscience Biotechnology and Biochemistry ·(unknown), (unknown), Katsuya Gomi, Chieko Kumagai, Yoshikazu Ohya, Gakuzo Tamura	13
8	Characteristic Expression of Three Amylase-encoding Genes,agdA, amyB, andglaAinAspergillus oryzaeTransformants Containing Multiple Copies of theagdAGene 1995 ·Bioscience Biotechnology and Biochemistry ·Toshitaka Minetoki, (unknown), Katsuhiko Kitamoto, Chieko Kumagai, (unknown)	18
9	Cloning, characterization and overproduction of nuclease S1 gene (nucS) from Aspergillus oryzae 1995 ·Applied Microbiology and Biotechnology ·(unknown), Katsuhiko Kitamoto, Osamu Yamada, Chieko Kumagai	18
10	A Novel Culture Method for High Level Production of Heterologous Protein inSaccharomyces cerevisiae 1994 ·Bioscience Biotechnology and Biochemistry ·Tadashi Nagashima, Yutaka Yamamoto, Katsuya Gomi, Katsuhiko Kitamoto, Chieko Kumagai	7
11	High Level Secretion of Calf Chymosin Using a Glucoamylase-prochymosin Fusion Gene inAspergillus oryzae 1994 ·Bioscience Biotechnology and Biochemistry ·Kozo Tsuchiya, Tadashi Nagashima, Yutaka Yamamoto, (unknown), Katsuhiko Kitamoto, Chieko Kumagai, (unknown)	81
12	Cloning and Nucleotide Sequence of the Acid Protease-encoding Gene (pepA) fromAspergillus oryzae 1993 ·Bioscience Biotechnology and Biochemistry ·Katsuya Gomi, (unknown), (unknown), Katsuhiko Kitamoto, Chieko Kumagai	55
13	Analysis and application of the promoter of phosphoglycerate kinase gene (pgkA) from Aspergillus oryzae. 1992 ·Masahiro Ogawa, Gakuzo Tamura, (unknown), Katsuhiko Kitamoto, Chieko Kumagai	1
14	Deletion Analysis of the Taka-amylase A Gene Promoter Using a Homologous Transformation System inAspergillus oryzae 1992 ·Bioscience Biotechnology and Biochemistry ·Kozo Tsuchiya, Setsuzo Tada, (unknown), Katsuhiko Kitamoto, Chieko Kumagai, Gakuzo Tamura	53
15	Cloning and nucleotide sequence of the genomic ribonuclease T2 gene (rntB) from Aspergillus oryzae 1991 ·Current Genetics ·Kenji Ozeki, Katsuhiko Kitamoto, Katsuya Gomi, Chieko Kumagai, Gakuzo Tamura, Shodo Hara	7
16	Studies on application of fungal cell wall lytic enzyme produced by Oerskovia sp. CK. (Part II) Estimation of mycelial weight in rice-koji with use of fungal cell wall lytic enzyme. 1987 ·JOURNAL OF THE SOCIETY OF BREWING JAPAN ·Katsuya Gomi, Naoto OKAZAKI, Toshio Tanaka, Chieko Kumagai, Hiroshi Inoué, Yuzuru Iimura, (unknown)	19
17	Production of Fungal Cell Wall Lytic Enzymes by Oerskovia sp. CK and Some Propertics of the Crude Enzymes. 1986 ·Journal of Fermentation Technology ·Katsuya Gomi, (unknown), Naoto OKAZAKI, Toshio Tanaka, Chieko Kumagai, Yuzuru Iimura, (unknown)	1
18	1981 ·Nippon Nōgeikagaku Kaishi ·Chieko Kumagai, Yataro NUNOKAWA, (unknown)	2
19	Studies on Non-Foaming Yeast (Part 7) 1971 ·JOURNAL OF THE SOCIETY OF BREWING JAPAN ·(unknown), Chieko Kumagai, (unknown), K. Ouchi	2
20	Studies on Non-foaming Yeasts (Part 6) Sake-Brewing Tests with Non-foaming Yeasts 1969 ·JOURNAL OF THE SOCIETY OF BREWING JAPAN ·(unknown), (unknown), Chieko Kumagai, Kazuo Saito, Norikazu Shimizu	4

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.

Explore authors with similar magnitude of impact