Hiroshi Kumaoka

837 total citations
35 papers, 718 citations indexed

About

Hiroshi Kumaoka is a scholar working on Biochemistry, Clinical Biochemistry and Molecular Biology. According to data from OpenAlex, Hiroshi Kumaoka has authored 35 papers receiving a total of 718 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Biochemistry, 19 papers in Clinical Biochemistry and 15 papers in Molecular Biology. Recurrent topics in Hiroshi Kumaoka's work include Metabolism and Genetic Disorders (19 papers), Amino Acid Enzymes and Metabolism (14 papers) and Biochemical Acid Research Studies (11 papers). Hiroshi Kumaoka is often cited by papers focused on Metabolism and Genetic Disorders (19 papers), Amino Acid Enzymes and Metabolism (14 papers) and Biochemical Acid Research Studies (11 papers). Hiroshi Kumaoka collaborates with scholars based in Japan and United States. Hiroshi Kumaoka's co-authors include Yuzo Yoshida, Sachiko Kubota, Kazuko Yamada, Ryo Sato, Yuzo Yoshida, Yuri Aoyama, Ryo Sato, Yoshiko Tamura, Gene M. Brown and Tetsuya Suga and has published in prestigious journals such as Biochemical and Biophysical Research Communications, Methods in enzymology on CD-ROM/Methods in enzymology and Archives of Biochemistry and Biophysics.

In The Last Decade

Hiroshi Kumaoka

33 papers receiving 663 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hiroshi Kumaoka Japan 16 532 199 177 98 97 35 718
C. Stan Tsai Canada 16 391 0.7× 23 0.1× 149 0.8× 89 0.9× 89 0.9× 62 678
Kent Axelsson Sweden 14 596 1.1× 76 0.4× 330 1.9× 179 1.8× 31 0.3× 22 929
Osvaldo Cori Chile 20 698 1.3× 25 0.1× 142 0.8× 60 0.6× 55 0.6× 42 899
C. A. Marsh Australia 16 351 0.7× 117 0.6× 65 0.4× 39 0.4× 60 0.6× 27 699
Alan R. Branfman United States 13 258 0.5× 81 0.4× 76 0.4× 31 0.3× 11 0.1× 20 655
Donald E. Wolf United States 15 470 0.9× 23 0.1× 159 0.9× 67 0.7× 24 0.2× 38 699
Kathryn E. Kitson New Zealand 10 222 0.4× 29 0.1× 54 0.3× 60 0.6× 37 0.4× 21 390
D.A. Lysek United Kingdom 11 1.1k 2.1× 472 2.4× 56 0.3× 34 0.3× 10 0.1× 14 1.4k
C. Donninger Netherlands 13 355 0.7× 78 0.4× 72 0.4× 19 0.2× 31 0.3× 19 585
Renate Untucht‐Grau Germany 7 382 0.7× 13 0.1× 229 1.3× 55 0.6× 53 0.5× 9 562

Countries citing papers authored by Hiroshi Kumaoka

Since Specialization
Citations

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

Fields of papers citing papers by Hiroshi Kumaoka

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hiroshi Kumaoka

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroshi Kumaoka. A scholar is included among the top collaborators of Hiroshi Kumaoka 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 Hiroshi Kumaoka. Hiroshi Kumaoka 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.
Tanaka, Keiko, et al.. (2000). Biosynthesis of Pyridoxine. Origin of the Nitrogen Atom of Pyridoxine in Microorganisms.. Journal of Nutritional Science and Vitaminology. 46(2). 55–57. 15 indexed citations
2.
Tanaka, Keiko, et al.. (2000). Biosynthesis of Thiamin under Anaerobic Conditions in Saccharomyces cerevisiae.. Biological and Pharmaceutical Bulletin. 23(1). 108–111. 7 indexed citations
3.
Yamada, Kazuko, et al.. (1997). [12] Isotopically labeled precursors and mass spectrometry in elucidating biosynthesis of pyrimidine moiety of thiamin in Saccharomyces cerevisiae. Methods in enzymology on CD-ROM/Methods in enzymology. 279. 97–108. 3 indexed citations
4.
Yamada, Kazuko, et al.. (1996). Biosynthesis of the Pyrimidine Moiety of Thiamin in Saccharomyces cerevisiae. 70(10). 465–471.
5.
Yamada, Kazuko, et al.. (1995). Origin of the nitrogen atom of pyridoxine in Saccharomyces cerevisiae. Biochimica et Biophysica Acta (BBA) - General Subjects. 1244(1). 113–116. 33 indexed citations
6.
Yamada, Kazuko, et al.. (1994). Origin of the N-1, C-2 and C-2' atoms of the pyrimidine moiety of thiamin in Saccharomyces cerevisiae.. PubMed. 33(4). 769–74. 9 indexed citations
7.
Yamada, Kazuko, et al.. (1989). Incorporation of histidine into the pyrimidine moiety of thiamin in Saccharomyces cerevisiae. Biochimica et Biophysica Acta (BBA) - General Subjects. 990(1). 73–79. 26 indexed citations
8.
Yamada, Kazuko, et al.. (1987). The origin of the sulfur atom of thiamin. Biochimica et Biophysica Acta (BBA) - General Subjects. 924(1). 210–215. 18 indexed citations
9.
Yamada, Kazuko, et al.. (1987). Biosynthesis of thiamin. Different biosynthetic routes of the thiazole moiety of thiamin in aerobic organisms and anaerobic organisms.. PubMed. 14(1). 153–60. 7 indexed citations
10.
Yamada, Kazuhiro, et al.. (1985). Biosynthesis of thiamin. The precursor of the five-carbon unit of the thiazole moiety.. PubMed. 10(4). 689–94. 1 indexed citations
11.
Kumaoka, Hiroshi, et al.. (1983). Different biosynthetic pathways of the pyrimidine moiety of thiamin in procaryotes and eucaryotes. Biochimica et Biophysica Acta (BBA) - General Subjects. 756(1). 41–48. 20 indexed citations
12.
Aoyama, Yuri, et al.. (1978). NADPH-cytochrome P-450 reductase of yeast microsomes. Archives of Biochemistry and Biophysics. 185(2). 362–369. 75 indexed citations
13.
Kubota, Sachiko, Yuzo Yoshida, & Hiroshi Kumaoka. (1977). Studies on the Microsomal Electron-transport System of Anaerobically Grown Yeast. The Journal of Biochemistry. 81(1). 187–195. 22 indexed citations
14.
Yoshida, Yuzo, Yuri Aoyama, Hiroshi Kumaoka, & Sachiko Kubota. (1977). A highly purified preparation of cytochrome P-450 from microsomes of anaerobically grown yeast. Biochemical and Biophysical Research Communications. 78(3). 1005–1010. 49 indexed citations
15.
Tamura, Yoshiko, Yuzo Yoshida, Ryo Sato, & Hiroshi Kumaoka. (1976). Fatty acid desaturase system of yeast microsomes. Archives of Biochemistry and Biophysics. 175(1). 284–294. 39 indexed citations
16.
Yoshida, Yuzo, Hiroshi Kumaoka, & Ryo Sato. (1974). Studies on the microsomal electron-transport system of anaerobically grown yeast. I. Intracellular localization and characterization.. PubMed. 75(6). 1201–10. 82 indexed citations
17.
Yoshida, Yuzo & Hiroshi Kumaoka. (1972). Interconversion of High- and Low-spin States of Cytochrome P-450 Solubilized from Yeast Microsomes. The Journal of Biochemistry. 71(5). 915–918. 11 indexed citations
18.
Yoshida, Yuzo, et al.. (1968). Studies on Nitro-Reducing Systems of Rat Liver. Chemical and Pharmaceutical Bulletin. 16(12). 2324–2333. 7 indexed citations
19.
Kumaoka, Hiroshi, et al.. (1963). ON THE NUTRITIONAL REQUIREMENT OF THIAMINE-THIAEOLE-LESS MUTANT OF ESCHERICHIA COLI. THE JOURNAL OF VITAMINOLOGY. 9(3). 191–196. 1 indexed citations
20.
Kumaoka, Hiroshi, et al.. (1963). THE INCORPORATION OF RADIOACTIVE SULFUR INTO THIAMINE BY SACCHAROMYCES CEREVISIAE. THE JOURNAL OF VITAMINOLOGY. 9(3). 177–182. 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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