Jun-ichi Tomizawa

10.6k total citations · 2 hit papers
108 papers, 9.0k citations indexed

About

Jun-ichi Tomizawa is a scholar working on Molecular Biology, Genetics and Ecology. According to data from OpenAlex, Jun-ichi Tomizawa has authored 108 papers receiving a total of 9.0k indexed citations (citations by other indexed papers that have themselves been cited), including 89 papers in Molecular Biology, 64 papers in Genetics and 45 papers in Ecology. Recurrent topics in Jun-ichi Tomizawa's work include Bacterial Genetics and Biotechnology (62 papers), Bacteriophages and microbial interactions (44 papers) and DNA Repair Mechanisms (41 papers). Jun-ichi Tomizawa is often cited by papers focused on Bacterial Genetics and Biotechnology (62 papers), Bacteriophages and microbial interactions (44 papers) and DNA Repair Mechanisms (41 papers). Jun-ichi Tomizawa collaborates with scholars based in Japan, United States and United Kingdom. Jun-ichi Tomizawa's co-authors include T Itoh, M H O'Dea, Martin Gellert, Tateo Itoh, Tomoko Ogawa, Hisao Masukata, Hideo Ikeda, Yoshimasa Sakakibara, Hideyuki Ogawa and Gerald Selzer and has published in prestigious journals such as Nature, Cell and Proceedings of the National Academy of Sciences.

In The Last Decade

Jun-ichi Tomizawa

107 papers receiving 7.9k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Nalidixic acid resistance: A second genetic character involved in DNA gyrase activity

1977 713 citations Tateo Itoh, Jun-ichi Tomizawa et al. Proceedings of the National Academy of Sciences profile →
Novobiocin and coumermycin inhibit DNA supercoiling catalyzed by DNA gyrase.

1976 628 citations Jun-ichi Tomizawa et al. Proceedings of the National Academy of Sciences profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Jun-ichi Tomizawa Japan	49	7.6k	4.1k	2.5k	897	577	108	9.0k
Yukinori Hirota Japan	44	4.9k 0.6×	3.5k 0.9×	1.4k 0.6×	959 1.1×	440 0.8×	107	6.6k
B Bachmann Germany	14	5.5k 0.7×	4.0k 1.0×	1.6k 0.7×	657 0.7×	533 0.9×	21	7.4k
Alvin J. Clark United States	51	7.7k 1.0×	5.1k 1.3×	1.9k 0.8×	526 0.6×	690 1.2×	113	9.2k
Susan T. Lovett United States	51	7.1k 0.9×	4.4k 1.1×	1.6k 0.6×	604 0.7×	710 1.2×	197	8.5k
Sidney R. Kushner United States	51	8.1k 1.1×	5.0k 1.2×	2.0k 0.8×	360 0.4×	570 1.0×	138	9.8k
M J Casadaban United States	30	7.2k 0.9×	4.9k 1.2×	2.1k 0.9×	448 0.5×	1.0k 1.8×	50	9.7k
Kenneth J. Marians United States	64	10.1k 1.3×	5.4k 1.3×	1.0k 0.4×	902 1.0×	533 0.9×	150	10.8k
Jay D. Gralla United States	49	8.5k 1.1×	4.8k 1.2×	2.1k 0.9×	362 0.4×	695 1.2×	132	9.8k
V Braun Germany	55	4.5k 0.6×	4.4k 1.1×	1.6k 0.7×	1.1k 1.2×	980 1.7×	115	8.0k
Mary C. Betlach United States	28	5.4k 0.7×	3.0k 0.7×	1.6k 0.6×	495 0.6×	931 1.6×	43	7.3k

Countries citing papers authored by Jun-ichi Tomizawa

Since Specialization

Citations

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

Fields of papers citing papers by Jun-ichi Tomizawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Jun-ichi Tomizawa. 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 Jun-ichi Tomizawa. The network helps show where Jun-ichi Tomizawa may publish in the future.

Co-authorship network of co-authors of Jun-ichi Tomizawa

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

All Works

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20 of 20 papers shown

Usui, Takehiko, Tsutomu Ohta, Hiroyuki Oshiumi, et al.. (1998). Complex Formation and Functional Versatility of Mre11 of Budding Yeast in Recombination. Cell. 95(5). 705–716. 308 indexed citations

Tomizawa, Jun-ichi. (1993). 16 Evolution of Functional Structures of RNA. Cold Spring Harbor Monograph Archive. 24. 419–445. 15 indexed citations

Ogawa, Tomoko, Akira Shinohara, Hideyuki Ogawa, & Jun-ichi Tomizawa. (1992). Functional structures of the RecA protein found by chimera analysis. Journal of Molecular Biology. 226(3). 651–660. 28 indexed citations

Eguchi, Yutaka & Jun-ichi Tomizawa. (1991). Complexes formed by complementary RNA stem-loops. Journal of Molecular Biology. 220(4). 831–842. 88 indexed citations

Ogawa, Tomoko, Hisao Masukata, & Jun-ichi Tomizawa. (1988). Transcriptional regulation of early functions of bacteriophage φ80. Journal of Molecular Biology. 202(3). 551–563. 16 indexed citations

Ogawa, Tomoko, et al.. (1988). Organization of the early region of bacteriophage φ80. Journal of Molecular Biology. 202(3). 537–550. 23 indexed citations

Tomizawa, Jun-ichi & Hisao Masukata. (1987). Factor-independent termination of transcription in a stretch of deoxyadenosine residues in the template DNA. Cell. 51(4). 623–630. 43 indexed citations

Selzer, Gerald, Tapan Som, Tateo Itoh, & Jun-ichi Tomizawa. (1983). The origin of replication of plasmid p15A and comparative studies on the nucleotide sequences around the origin of related plasmids. Cell. 32(1). 119–129. 181 indexed citations

Ohmori, Haruo & Jun-ichi Tomizawa. (1979). Nucleotide sequence of the region required for maintenance of colicin E1 plasmid. Molecular and General Genetics MGG. 176(2). 161–170. 31 indexed citations

10.

Tomizawa, Jun-ichi, Yoshimasa Sakakibara, & T Kakefuda. (1975). Replication of colicin E1 plasmid DNA added to cell extracts.. Proceedings of the National Academy of Sciences. 72(3). 1050–1054. 70 indexed citations

11.

Tomizawa, Jun-ichi. (1971). Functional Cooperation of Genes O and P. Cold Spring Harbor Monograph Archive. 2. 549–552. 25 indexed citations

12.

Sakakibara, Yoshimasa & Jun-ichi Tomizawa. (1971). Gene N and Membrane Association of Lambda DNA. Cold Spring Harbor Monograph Archive. 2. 691–699. 15 indexed citations

13.

Itoh, Tateo & Jun-ichi Tomizawa. (1971). INACTIVATION OF CHROMOSOMAL FRAGMENTS TRANSFERRED FROM Hfr STRAINS. Genetics. 68(1). 1–11. 12 indexed citations

14.

Tomizawa, Jun-ichi, et al.. (1965). SYMPOSIUM ON CELL COMPONENTS AND PROTECTIVE ANTIGEN OF BORDETELLA PERTUSSIS. Japanese Journal of Medical Science and Biology. 18(3). 169–175. 1 indexed citations

15.

Horiuchi, Tadao, Jun-ichi Tomizawa, & Aaron Novick. (1962). Isolation and properties of bacteria capable of high rates of β-galactosidase synthesis. Biochimica et Biophysica Acta. 55(1-2). 152–163. 151 indexed citations

16.

Tomizawa, Jun-ichi. (1962). Chromosomes of Phage and Bacteria and Their Recombination. The Japanese Journal of Genetics. 37(5). 357–362. 3 indexed citations

17.

Tomizawa, Jun-ichi, et al.. (1956). THE EFFECT OF CHLORAMPHENICOL ON DEOXYRIBONUCLEIC ACID SYNTHESIS AND THE DEVELOPMENT OF RESISTANCE TO ULTRAVIOLET IRRADIATION IN E. COLI INFECTED WITH BACTERIOPHAGE T2. The Journal of General Physiology. 39(4). 553–565. 111 indexed citations

18.

Tomizawa, Jun-ichi. (1954). THE MECHANISM OF ACONITASE ACTION:III. KINETIC ANALYSIS USING DL-ISOCITRIC ACID-2-C 14. The Journal of Biochemistry. 41(5). 567–575. 1 indexed citations

19.

Tomizawa, Jun-ichi. (1953). THE MECHANISM OF ACONITASE ACTION:II. SOME EVIDENCES SUPPORTING ONE ENZYME AND ONE ACTIVATED COMPLEX THEORY AND THE COMPARATIVE STUDIES ON FUMARASE ACTION. The Journal of Biochemistry. 40(4). 351–359. 3 indexed citations

20.

Tomizawa, Jun-ichi & HIDEO FUKUMI. (1952). SOME ASPECTS OF METHANOL PRECIPITATION OF INFLUENZA VIRUS. Japanese Journal of Medical Science and Biology. 5(1). 59–63. 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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