Hitoshi Fujisawa

4.6k total citations
112 papers, 4.0k citations indexed

About

Hitoshi Fujisawa is a scholar working on Molecular Biology, Cellular and Molecular Neuroscience and Cell Biology. According to data from OpenAlex, Hitoshi Fujisawa has authored 112 papers receiving a total of 4.0k indexed citations (citations by other indexed papers that have themselves been cited), including 88 papers in Molecular Biology, 24 papers in Cellular and Molecular Neuroscience and 24 papers in Cell Biology. Recurrent topics in Hitoshi Fujisawa's work include Protein Kinase Regulation and GTPase Signaling (19 papers), Neuroscience and Neuropharmacology Research (14 papers) and Polyamine Metabolism and Applications (13 papers). Hitoshi Fujisawa is often cited by papers focused on Protein Kinase Regulation and GTPase Signaling (19 papers), Neuroscience and Neuropharmacology Research (14 papers) and Polyamine Metabolism and Applications (13 papers). Hitoshi Fujisawa collaborates with scholars based in Japan, United States and Switzerland. Hitoshi Fujisawa's co-authors include Takashi Yamauchi, Sachiko Okuno, Isamu Kameshita, Takako Kitani, Hiroyasu Nakata, Atsuhiko Ishida, Tohru Ichimura, Toshiaki Isobe, Mitsuhiro Nozaki and Osamu Hayaishi and has published in prestigious journals such as Journal of Biological Chemistry, Analytical Biochemistry and Biochemical and Biophysical Research Communications.

In The Last Decade

Hitoshi Fujisawa

112 papers receiving 3.8k citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Hitoshi Fujisawa Japan 34 2.8k 1.1k 760 410 342 112 4.0k
R. Wayne Albers United States 37 3.2k 1.1× 1.1k 1.1× 562 0.7× 669 1.6× 226 0.7× 80 4.6k
Greg J. Barritt Australia 39 2.7k 1.0× 1.3k 1.2× 502 0.7× 608 1.5× 186 0.5× 157 4.8k
Arata Ichiyama Japan 32 3.4k 1.2× 1.4k 1.3× 382 0.5× 482 1.2× 360 1.1× 119 4.5k
G. Vincendon France 36 2.8k 1.0× 1.3k 1.2× 718 0.9× 422 1.0× 196 0.6× 144 4.2k
Freesia L. Huang United States 38 3.3k 1.2× 1.3k 1.2× 824 1.1× 533 1.3× 182 0.5× 79 4.6k
T Mori Japan 12 2.6k 0.9× 538 0.5× 679 0.9× 461 1.1× 314 0.9× 28 3.5k
Tetsufumi Ueda United States 35 2.8k 1.0× 2.5k 2.4× 1.1k 1.4× 498 1.2× 303 0.9× 79 4.1k
Maria Teresa Carrı̀ Italy 45 2.5k 0.9× 707 0.7× 307 0.4× 883 2.2× 289 0.8× 112 5.5k
Emanuel J. Diliberto United States 25 1.7k 0.6× 1.3k 1.2× 720 0.9× 377 0.9× 152 0.4× 42 3.2k
Akemi Matsuno‐Yagi United States 40 4.4k 1.6× 1.0k 1.0× 246 0.3× 431 1.1× 208 0.6× 86 6.0k

Countries citing papers authored by Hitoshi Fujisawa

Since Specialization
Citations

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

Fields of papers citing papers by Hitoshi Fujisawa

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Hitoshi Fujisawa

This figure shows the co-authorship network connecting the top 25 collaborators of Hitoshi Fujisawa. A scholar is included among the top collaborators of Hitoshi Fujisawa 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 Hitoshi Fujisawa. Hitoshi Fujisawa 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.
Kitani, Takako, Sachiko Okuno, Yasuhisa Nakamura, et al.. (2005). Post‐translational excision of the carboxyl‐terminal segment of CaM kinase phosphatase N and its cytosolic occurrence in the brain. Journal of Neurochemistry. 96(2). 374–384. 7 indexed citations
2.
Ishida, Atsuhiko, Noriyuki Sueyoshi, Tsuyoshi Katoh, et al.. (2004). Identification of major Ca2+/calmodulin-dependent protein kinase phosphatase-binding proteins in brain: biochemical analysis of the interaction. Archives of Biochemistry and Biophysics. 435(1). 134–146. 15 indexed citations
3.
Ishida, Atsuhiko, Isamu Kameshita, Sachiko Okuno, Takako Kitani, & Hitoshi Fujisawa. (2002). Phosphorylation of calmodulin by Ca2+/calmodulin-dependent protein kinase IV. Archives of Biochemistry and Biophysics. 407(1). 72–82. 6 indexed citations
4.
Ishida, Atsuhiko, Isamu Kameshita, Takako Kitani, et al.. (2002). Stimulation of Ca2+/calmodulin-dependent protein kinase phosphatase by polycations. Archives of Biochemistry and Biophysics. 408(2). 229–238. 18 indexed citations
5.
Nakamura, Yasuhisa, Sachiko Okuno, Takako Kitani, et al.. (2001). Immunohistochemical localization of Ca2+/calmodulin-dependent protein kinase kinase β in the rat central nervous system. Neuroscience Research. 39(2). 175–188. 20 indexed citations
6.
Nakamura, Yasuhisa, Takako Kitani, Sachiko Okuno, et al.. (2000). Immunohistochemical study of the distribution of Ca2+/calmodulin-dependent protein kinase phosphatase in the rat central nervous system. Molecular Brain Research. 77(1). 76–94. 15 indexed citations
7.
Ishida, Atsuhiko, Yasushi Shigeri, Yoshiro Tatsu, et al.. (1998). Critical amino acid residues of AIP, a highly specific inhibitory peptide of calmodulin‐dependent protein kinase II. FEBS Letters. 427(1). 115–118. 52 indexed citations
8.
Ishida, Atsuhiko, Isamu Kameshita, & Hitoshi Fujisawa. (1997). Assay of Protein Phosphatase Activities with Phosphopeptide–Magnetic Particle Conjugates. Analytical Biochemistry. 254(1). 152–155. 6 indexed citations
9.
Hayashi, Yasunori, Atsuhiko Ishida, Hiroyuki Katagiri, et al.. (1997). Calcium- and calmodulin-dependent phosphorylation of AMPA type glutamate receptor subunits by endogenous protein kinases in the post-synaptic density. Molecular Brain Research. 46(1-2). 338–342. 31 indexed citations
10.
Okajima, Tetsuya, Sachiko Okuno, Hitoshi Fujisawa, & Masatoshi Hagiwara. (1996). Nuclear Localization of Ca^ /Calmodulin-Dependent Protein Kinase IV and Calspermin. 4(3). 117–128. 3 indexed citations
11.
Watanabe, Shinji, Sachiko Okuno, Takako Kitani, & Hitoshi Fujisawa. (1996). Inactivation of Calmodulin-dependent Protein Kinase IV by Autophosphorylation of Serine 332 within the Putative Calmodulin-binding Domain. Journal of Biological Chemistry. 271(12). 6903–6910. 21 indexed citations
12.
Ishida, Atsuhiko, Takako Kitani, & Hitoshi Fujisawa. (1996). Evidence that autophosphorylation at Thr-286/Thr-287 is required for full activation of calmodulin-dependent protein kinase II. Biochimica et Biophysica Acta (BBA) - Molecular Cell Research. 1311(3). 211–217. 23 indexed citations
13.
Takasawa, Shin, Atsuhiko Ishida, Koji Nata, et al.. (1995). Requirement of Calmodulindependent Protein Kinase II in Cyclic ADP-ribose-mediated Intracellular Ca2+ Mobilization. Journal of Biological Chemistry. 270(51). 30257–30259. 87 indexed citations
14.
Ishida, Atsuhiko, Takako Kitani, Sachiko Okuno, & Hitoshi Fujisawa. (1994). Inactivation of Ca2+/Calmodulin-Dependent Protein Kinase II by Ca2+/Calmodulin1. The Journal of Biochemistry. 115(6). 1075–1082. 24 indexed citations
15.
Oomori, Yukio, Sachiko Okuno, Hitoshi Fujisawa, & Kazuyuki Ono. (1991). Immunoelectron microscopic study of tyrosine hydroxylase immunoreactive nerve fibers and ganglion cells in the rat adrenal gland. The Anatomical Record. 229(3). 407–414. 19 indexed citations
16.
Okuno, Sachiko & Hitoshi Fujisawa. (1991). Conversion of Tyrosine Hydroxylase to Stable and Inactive Form by the End Products. Journal of Neurochemistry. 57(1). 53–60. 40 indexed citations
17.
Tobimatsu, Takamasa & Hitoshi Fujisawa. (1989). Tissue-specific expression of mRNAs for three distinct types of rat calmodulin-dependent protein kinase II. Neuroscience Research Supplements. 9. 110–110. 12 indexed citations
18.
Woodgett, James R., Philip Cohen, Takashi Yamauchi, & Hitoshi Fujisawa. (1984). Comparison of calmodulin‐dependent glycogen synthase kinase from skeletal muscle and calmodulin‐dependent protein kinase‐II from brain. FEBS Letters. 170(1). 49–54. 41 indexed citations
19.
Okuno, Sachiko & Hitoshi Fujisawa. (1984). The activity of tyrosine 3-monooxygenase is usually suppressed by an endogenous factor in brain. Biochemical and Biophysical Research Communications. 124(1). 223–228. 9 indexed citations
20.
Nozaki, Mitsuhiro, Sachiko Okuno, & Hitoshi Fujisawa. (1971). The mechanism of inhibition of tryptophan 2,3-dioxygenase by aquayamycin. Biochemical and Biophysical Research Communications. 44(5). 1109–1116. 5 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by R. Wayne Albers Breakdown of academic impact, for papers by Greg J. Barritt Breakdown of academic impact, for papers by Arata Ichiyama Breakdown of academic impact, for papers by G. Vincendon Breakdown of academic impact, for papers by Freesia L. Huang Breakdown of academic impact, for papers by T Mori Breakdown of academic impact, for papers by Tetsufumi Ueda Breakdown of academic impact, for papers by Maria Teresa Carrı̀ Breakdown of academic impact, for papers by Emanuel J. Diliberto Breakdown of academic impact, for papers by Akemi Matsuno‐Yagi
Rankless by CCL
2026