Kazumi Sakai

1.7k total citations
47 papers, 886 citations indexed

About

Kazumi Sakai is a scholar working on Cellular and Molecular Neuroscience, Molecular Biology and Endocrine and Autonomic Systems. According to data from OpenAlex, Kazumi Sakai has authored 47 papers receiving a total of 886 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Cellular and Molecular Neuroscience, 14 papers in Molecular Biology and 11 papers in Endocrine and Autonomic Systems. Recurrent topics in Kazumi Sakai's work include Photoreceptor and optogenetics research (15 papers), Circadian rhythm and melatonin (11 papers) and Retinal Development and Disorders (10 papers). Kazumi Sakai is often cited by papers focused on Photoreceptor and optogenetics research (15 papers), Circadian rhythm and melatonin (11 papers) and Retinal Development and Disorders (10 papers). Kazumi Sakai collaborates with scholars based in Japan and United States. Kazumi Sakai's co-authors include Takahiro Yamashita, Yoshinori Shichida, Hideyo Ohuchi, Sayuri Tomonari, Keiko Ikeda, Yasuo Okabe, Yasushi Imamoto, T Sudo, Takahiro Kunisada and Shinichi Hayashi and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Biological Chemistry and Nature Communications.

In The Last Decade

Kazumi Sakai

46 papers receiving 859 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Kazumi Sakai Japan 16 364 304 230 144 69 47 886
Jean M. Marshall United States 26 285 0.8× 479 1.6× 72 0.3× 145 1.0× 15 0.2× 52 1.5k
Peter O. Bayguinov United States 18 171 0.5× 232 0.8× 32 0.1× 26 0.2× 13 0.2× 39 975
Surbhi Gahlot India 13 48 0.1× 75 0.2× 144 0.6× 42 0.3× 136 2.0× 59 735
Zahurul A. Bhuiyan Netherlands 28 228 0.6× 2.0k 6.5× 32 0.1× 38 0.3× 13 0.2× 60 3.4k
Hisao Yamaguchi Japan 17 98 0.3× 260 0.9× 22 0.1× 64 0.4× 35 0.5× 103 962
Qian Zhou China 16 56 0.2× 448 1.5× 136 0.6× 178 1.2× 15 0.2× 61 1.0k
Goldstein Al United States 15 68 0.2× 194 0.6× 52 0.2× 280 1.9× 3 0.0× 44 871
Jinhu Guo China 20 85 0.2× 823 2.7× 259 1.1× 44 0.3× 33 0.5× 63 1.5k
Amy E. Berson United States 12 194 0.5× 437 1.4× 336 1.5× 91 0.6× 17 0.2× 15 1.3k
Edward Felder Germany 20 197 0.5× 514 1.7× 73 0.3× 84 0.6× 14 0.2× 34 1.1k

Countries citing papers authored by Kazumi Sakai

Since Specialization
Citations

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

Fields of papers citing papers by Kazumi Sakai

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Kazumi Sakai

This figure shows the co-authorship network connecting the top 25 collaborators of Kazumi Sakai. A scholar is included among the top collaborators of Kazumi Sakai 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 Kazumi Sakai. Kazumi Sakai 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.
Yamashita, Takahiro, et al.. (2025). Molecular diversity of protostome non-visual opsin arthropsin. iScience. 28(7). 112989–112989. 1 indexed citations
2.
Mizuno, Misao, Keita Sato, Takahiro Yamashita, et al.. (2023). Chromophore Structure in an Inactive State of a Novel Photosensor Protein Opn5L1: Resonance Raman Evidence for the Formation of a Deprotonated Adduct at the 11th Carbon Atom. The Journal of Physical Chemistry B. 127(10). 2169–2176. 1 indexed citations
3.
Sakai, Kazumi, Yoshinori Shichida, Yasushi Imamoto, & Takahiro Yamashita. (2022). Creation of photocyclic vertebrate rhodopsin by single amino acid substitution. eLife. 11. 12 indexed citations
4.
Sato, Keita, Takahiro Yamashita, Keiichi Kojima, et al.. (2018). Pinopsin evolved as the ancestral dim-light visual opsin in vertebrates. Communications Biology. 1(1). 156–156. 26 indexed citations
5.
Ohuchi, Hideyo, Takashi Sugiyama, Kazumi Sakai, et al.. (2017). Two Opsin 3-related Proteins in the Retina and Brain: A TMT-type Opsin 3 is a Blue-light Sensor in Retinal Horizontal Cells. 145. 1 indexed citations
6.
Sugiyama, Takashi, Kazumi Sakai, Takahiro Yamashita, et al.. (2016). Two Opsin 3-Related Proteins in the Chicken Retina and Brain: A TMT-Type Opsin 3 Is a Blue-Light Sensor in Retinal Horizontal Cells, Hypothalamus, and Cerebellum. PLoS ONE. 11(11). e0163925–e0163925. 26 indexed citations
7.
Suzuki, Tomoyuki, Toshimasa Nakao, S. Harada, et al.. (2014). Results of Kidney Transplantation for Diabetic Nephropathy: A Single-Center Experience. Transplantation Proceedings. 46(2). 464–466. 3 indexed citations
8.
Yoshimura, Norio, Shuji Nobori, Tomoyuki Suzuki, et al.. (2013). Excellent Results of High-Dose Mizoribine Combined With Cyclosporine, Basiliximab, and Corticosteroids in Renal Transplant Recipients—4-Year Results. Transplantation Proceedings. 45(4). 1472–1475. 7 indexed citations
9.
Sakai, Kazumi, Hideaki Okajima, Tomo Suzuki, et al.. (2012). Investigation of Histological Vascular Invasion From Preoperative Evaluation in Patients with Hepatocellular Carcinoma Who Underwent Living Donor Liver Transplantation. Transplantation Proceedings. 44(2). 409–411. 1 indexed citations
10.
Ohuchi, Hideyo, Takahiro Yamashita, Sayuri Tomonari, et al.. (2012). A Non-Mammalian Type Opsin 5 Functions Dually in the Photoreceptive and Non-Photoreceptive Organs of Birds. PLoS ONE. 7(2). e31534–e31534. 46 indexed citations
11.
Sakai, Kazumi. (2011). Quality-aware energy routing toward on-demand home energy networking. 5 indexed citations
12.
Sakai, Kazumi, et al.. (2011). A GMPLS-based Power Route Reservation System toward Energy-on-Demand Home Networking. IEICE Technical Report; IEICE Tech. Rep.. 111(247). 13–18. 1 indexed citations
13.
Sakai, Kazumi & Yasuo Okabe. (2011). Quality-aware energy routing toward on-demand home energy networking: (Position paper). 1041–1044. 16 indexed citations
14.
Sakai, Kazumi, Masahiko Okamoto, Tomo Suzuki, et al.. (2011). A Case of Living-Donor Renal Transplantation for Chronic Renal Failure Caused by Secondary Amyloidosis. Transplantation Proceedings. 43(6). 2418–2420. 2 indexed citations
15.
Sakai, Kazumi, et al.. (2011). The Design and Implementation of an On-demand DC Grid in Home. 2702. 152–159. 13 indexed citations
16.
Yamashita, Takahiro, Hideyo Ohuchi, Sayuri Tomonari, et al.. (2010). Opn5 is a UV-sensitive bistable pigment that couples with Gi subtype of G protein. Proceedings of the National Academy of Sciences. 107(51). 22084–22089. 157 indexed citations
17.
Okabe, Yasuo, et al.. (2010). Quality-aware Energy Routing toward On-demand Home Energy Networking. IEICE Technical Report; IEICE Tech. Rep.. 110(260). 11–16. 14 indexed citations
18.
Okabe, Yasuo & Kazumi Sakai. (2009). QoEn (Quality of Energy) Routing toward Energy on Demand Service in the Future Internet. IEICE Technical Report; IEICE Tech. Rep.. 109(262). 9–12. 5 indexed citations
19.
Iwata, Takanori, Kazumi Sakai, M Hori, et al.. (1999). Human Parathyroid Hormone (1-34) Transiently Increases the Excretion of Lysosomal Enzymes into Urine and the Size of Renal Lysosomes. The Journal of Biochemistry. 126(3). 485–493. 1 indexed citations
20.
Okabe, Satoshi, Kazumi Sakai, & Yoshimasa Watanabe. (1998). A Rapid Detection Method of Nitrifying Bacteria Using an INT Dehydrogenase Assay.. Journal of Japan Society on Water Environment. 21(2). 88–97. 3 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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