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Tanaka-Yoshida Lab
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The lab works to uncover how cells live, from bacteria and algae to plants.
AboutAbout the lab
The world of cells, full of wonders.
The Tanaka-Yoshida Lab studies the cell, the basic unit of life, across a wide range of organisms from bacteria and algae to plants.
At the foundation of the cellular system are mechanisms for acquiring energy, represented by respiration and the light reactions of photosynthesis.
Supported by these, biosynthesis allows cells to grow and then proliferate.
The lab aims to understand not just the individual parts but the fundamental mechanisms by which they work together to sustain life, and ultimately to design cells at will.
Key terms
- Cyanobacteria
- Bacteria that carry out oxygenic photosynthesis. They are thought to be the origin of chloroplasts
- Redox regulation
- A mechanism that switches enzyme activity by changing the oxidation and reduction state of proteins
- Ribosome
- The cellular machine that builds proteins based on genetic information. It influences how fast a cell grows
NewsLab news
An enzyme is used to tune the performance of the light-harvesting antenna in cyanobacteria
The sulfated polysaccharide synthesis system is successfully transplanted and made functional between cyanobacteria
A presentation from the lab wins a poster award at the Annual Meeting of the Japanese Society of Plant Physiologists
Functional modification of phycobilisomes in cyanobacteria is successfully achieved
Prof. Tanaka wins the Japan Society for Bioscience, Biotechnology, and Agrochemistry Award
ResearchResearch themes
The lab focuses on energy-acquiring systems such as respiration and photosynthesis, and on the biosynthesis they support, in order to understand the fundamental mechanisms by which cells live. Research is divided by faculty member, and each approaches the cellular system from a different angle.
*Illustrative imageEvolution of the frameworks that keep cells alive
The lab studies the environmental response systems that protect oxygenic photosynthesis and the operating programs of bacterial cells. It also works on how eukaryotic cells arose through endosymbiosis and on developing synthetic biology techniques for making use of microorganisms.
*Illustrative imageSystem regulation of plant photosynthesis
The lab studies the redox regulatory system that adjusts chloroplast function in response to light. It is working, at levels ranging from purified proteins to whole plants, to clarify the division of roles among diverse regulatory factors such as thioredoxin and to comprehensively identify the enzymes under their control.
*Illustrative imageGlycobiology of photosynthetic organisms
The lab studies the extracellular polysaccharides produced by cyanobacteria, along with the formation and function of the biofilms in which they are involved. For the sulfated polysaccharides unique to cyanobacteria, it is also working to discover new producing strains and to clarify the mechanisms of their synthesis and regulation.
*Illustrative imageRibosomes and the regulation of growth
Starting from the ribosome, the lab investigates how microbial cells control their growth. It analyzes ribosomal RNA modifications and their networks with metabolism, and also aims to construct genomes streamlined to only the functions required for growth.
MembersFaculty
The members of the Tanaka-Yoshida Lab consist of faculty, a visiting lecturer, researchers, technical staff, secretaries, doctoral, master's, and undergraduate students, and research students.As of 2026
- ProfessorKan TanakaPublications ↗
- Associate ProfessorKeisuke YoshidaPublications ↗
- Assistant ProfessorKaisei MaedaPublications ↗
- Assistant Professor大坂 夏木
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Leaf epithelium, guard cells, stomatal pore and peripheral chloroplasts” Emilio Ermini / CC BY 4.0 (cropped)
- Evolution of the frameworks that keep cells alive: “Cyanobacteria growing as epiphytes on Chara species” Sphingomonas / CC BY-SA 4.0 (cropped)
- System regulation of plant photosynthesis: “Arabidopsis thal background” Reo On / CC BY-SA 3.0 (cropped)
- Glycobiology of photosynthetic organisms: “Mixed-culture biofilm” Krzysztof A. Zacharski / CC BY 4.0 (cropped)
- Ribosomes and the regulation of growth: “121- RCSB Molecule-of-Month 70S 3-step Ribosome elongation” David S. Goodsell / CC BY 4.0 (cropped)
- Related lab (増田研究室): “Cyanobacteria guerrero negro” NASA / Public domain (cropped)
- Related lab (藤田研究室): “Drosophila melanogaster under microscope” Talita Oliveira / CC BY-SA 4.0 (cropped)
- Related lab (マックグリン研究室): “Stromatolites in Sharkbay” Paul Harrison / CC BY-SA 3.0 (cropped)
- Related lab (平沢研究室): “Stainless steel vinification tanks” Cjp24 / CC BY-SA 4.0 (cropped)
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