H Okada

1.2k total citations
26 papers, 974 citations indexed

About

H Okada is a scholar working on Molecular Biology, Materials Chemistry and Genetics. According to data from OpenAlex, H Okada has authored 26 papers receiving a total of 974 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Molecular Biology, 8 papers in Materials Chemistry and 7 papers in Genetics. Recurrent topics in H Okada's work include Enzyme Structure and Function (8 papers), Bacterial Genetics and Biotechnology (6 papers) and Amino Acid Enzymes and Metabolism (5 papers). H Okada is often cited by papers focused on Enzyme Structure and Function (8 papers), Bacterial Genetics and Biotechnology (6 papers) and Amino Acid Enzymes and Metabolism (5 papers). H Okada collaborates with scholars based in Japan. H Okada's co-authors include Seiji Negoro, Itaru Urabe, Haruhisa Hirata, Suvit Loprasert, Shinji Kakudo, Tetsuya Fukazawa, Y. Makino, Tetsuya Yomo, Hideo Kimura and Susumu Ikegami and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Applied and Environmental Microbiology.

In The Last Decade

H Okada

26 papers receiving 951 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
H Okada Japan 20 561 229 161 136 135 26 974
R T Vinopal United States 15 404 0.7× 60 0.3× 114 0.7× 132 1.0× 144 1.1× 22 784
Andrzej Łyskowski Austria 20 632 1.1× 94 0.4× 125 0.8× 169 1.2× 120 0.9× 37 1.1k
Anthony J. Sinskey United States 22 697 1.2× 71 0.3× 63 0.4× 151 1.1× 275 2.0× 44 1.3k
D. Riesenberg Germany 14 897 1.6× 138 0.6× 63 0.4× 182 1.3× 53 0.4× 36 1.1k
Jae Kwang Song South Korea 17 698 1.2× 189 0.8× 56 0.3× 69 0.5× 155 1.1× 48 951
Martin Willemoës Denmark 24 1.1k 1.9× 231 1.0× 285 1.8× 117 0.9× 163 1.2× 59 1.6k
Kuniaki Hosono Japan 18 694 1.2× 166 0.7× 50 0.3× 75 0.6× 47 0.3× 61 1.2k
Pablo J. Pomposiello United States 13 757 1.3× 63 0.3× 103 0.6× 443 3.3× 83 0.6× 17 1.3k
Marcelo Müller‐Santos Brazil 19 649 1.2× 107 0.5× 82 0.5× 60 0.4× 168 1.2× 48 1.0k
Vasantha Nagarajan United States 15 546 1.0× 86 0.4× 54 0.3× 137 1.0× 36 0.3× 23 752

Countries citing papers authored by H Okada

Since Specialization
Citations

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

Fields of papers citing papers by H Okada

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H Okada

This figure shows the co-authorship network connecting the top 25 collaborators of H Okada. A scholar is included among the top collaborators of H Okada 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 H Okada. H Okada 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.
Okada, H, et al.. (2024). Fundamental study on lean operation limit of super lean-burn spark ignition engines. Proceedings of the Combustion Institute. 40(1-4). 105718–105718. 2 indexed citations
2.
3.
Kobayashi, Mariko, S. Katayama, Kazuhiko Ohashi, et al.. (1994). Marine Natural Products. XXXIII. Theonellapeptolide IId, a New Tridecapeptide Lactone from the Okinawan Marine Sponge Theonella swinhoei.. Chemical and Pharmaceutical Bulletin. 42(7). 1410–1415. 18 indexed citations
4.
Okada, H, Shinji Ohta, Yukiho Yamaoka, et al.. (1994). Anti-bacillus substance in the marine sponge, Hyatella species, produced by an associated Vibrio species bacterium.. PubMed. 78(314). 7–16. 75 indexed citations
5.
Oishi, Masamichi, et al.. (1993). Characterization of the 6-aminohexanoate-dimer hydrolase from Pseudomonas sp. NK87. Journal of General Microbiology. 139(4). 787–795. 16 indexed citations
6.
Negoro, Seiji, Shinji Kakudo, Itaru Urabe, & H Okada. (1992). A new nylon oligomer degradation gene (nylC) on plasmid pOAD2 from a Flavobacterium sp. Journal of Bacteriology. 174(24). 7948–7953. 40 indexed citations
7.
Akatsuka, Hiroyuki, Hideaki Moriyama, Atsuhiko Shinmyō, et al.. (1992). Site-directed mutagenesis at aspartate and glutamate residues of xylanase from Bacillus pumilus. Biochemical Journal. 288(1). 117–121. 63 indexed citations
8.
Yomo, Tetsuya, Itaru Urabe, & H Okada. (1992). No stop codons in the antisense strands of the genes for nylon oligomer degradation.. Proceedings of the National Academy of Sciences. 89(9). 3780–3784. 20 indexed citations
9.
Makino, Y., Seiji Negoro, Itaru Urabe, & H Okada. (1989). Stability-increasing Mutants of Glucose Dehydrogenase from Bacillus megaterium IWG3. Journal of Biological Chemistry. 264(11). 6381–6385. 64 indexed citations
10.
Loprasert, Suvit, Seiji Negoro, & H Okada. (1989). Cloning, nucleotide sequence, and expression in Escherichia coli of the Bacillus stearothermophilus peroxidase gene (perA). Journal of Bacteriology. 171(9). 4871–4875. 45 indexed citations
11.
Tsuchiya, Kozo, et al.. (1989). High homology between 6-aminohexanoate-cyclic-dimer hydrolases of Flavobacterium and Pseudomonas strains. Journal of Bacteriology. 171(6). 3187–3191. 38 indexed citations
12.
Loprasert, Suvit, Seiji Negoro, & H Okada. (1988). Thermostable Peroxidase from Bacillus stearothermophilus. Microbiology. 134(7). 1971–1976. 34 indexed citations
13.
Yamazaki, Yuji, Shigeyuki Ebisu, & H Okada. (1988). Partial purification of a bacterial lectinlike substance from Eikenella corrodens. Infection and Immunity. 56(1). 191–196. 31 indexed citations
14.
Hirata, Haruhisa, Tetsuya Fukazawa, Seiji Negoro, & H Okada. (1986). Structure of a beta-galactosidase gene of Bacillus stearothermophilus. Journal of Bacteriology. 166(3). 722–727. 93 indexed citations
15.
Nakamura, Akio, Itaru Urabe, & H Okada. (1986). Anchimeric assistance in the intramolecular reaction of glucose-dehydrogenase-polyethylene glycol NAD conjugate.. Journal of Biological Chemistry. 261(36). 16792–16794. 28 indexed citations
16.
Hirata, Haruhisa, Seiji Negoro, & H Okada. (1984). Molecular basis of isozyme formation of beta-galactosidases in Bacillus stearothermophilus: isolation of two beta-galactosidase genes, bgaA and bgaB. Journal of Bacteriology. 160(1). 9–14. 36 indexed citations
17.
Negoro, Seiji, Shun‐ichi Nakamura, Hideo Kimura, et al.. (1984). Construction of hybrid genes of 6-aminohexanoic acid-oligomer hydrolase and its analogous enzyme. Estimation of the intramolecular regions important for the enzyme evolution.. Journal of Biological Chemistry. 259(22). 13648–13651. 15 indexed citations
18.
Negoro, Seiji, T. Taniguchi, Masaharu Kanaoka, Hideo Kimura, & H Okada. (1983). Plasmid-determined enzymatic degradation of nylon oligomers. Journal of Bacteriology. 155(1). 22–31. 62 indexed citations
19.
Wada, Hajime, Hidemi Kurihara, & H Okada. (1982). Fatty Acid Composition in Phenol Extracts from Actinomyces Species. Journal of Dental Research. 61(11). 1282–1286. 3 indexed citations
20.
Yamada, Yasuhiro, et al.. (1977). Oxidation of linear terpenes and squalene variants by Arthrobacter sp. Applied and Environmental Microbiology. 33(4). 771–776. 22 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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