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Tomo Lab
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A lab that explores how light energy is converted, starting from the protein complexes of photosynthesis.
AboutAbout the lab
Understanding photosynthesis at the molecular level to expand the possibilities of biological energy conversion.
The Tomo Lab studies the structure and function of the protein complexes responsible for photosynthetic reactions, as well as light energy transfer, electron transfer, and the roles of pigments.
Focusing mainly on Photosystem I and Photosystem II, which carry out oxygenic photosynthesis, the lab seeks to clarify how light energy is captured and converted into chemical energy.
The lab combines biochemical sample preparation, absorption and fluorescence spectroscopy, time-resolved spectroscopy, structural biology, and molecular biology.
The university's lab introduction also says that the lab studies the molecular evolution of photosynthetic organisms.
Key terms
- Photosystem
- A protein complex that absorbs light energy in photosynthesis and converts it into electron transfer reactions. There are two types: Photosystem I and Photosystem II
- Excitation energy transfer
- The passing of energy that a pigment obtains by absorbing light on to other pigments
- Low-energy chlorophyll
- A chlorophyll with low energy found in the Photosystem I of cyanobacteria. The lab studies its origin and function
ResearchResearch themes
The Tomo Lab studies the photochemical reactions and biological energy conversion of photosynthesis, focusing on the structure of protein complexes, the properties of pigments, excitation energy transfer, and the mechanisms of electron transfer. Combining spectroscopy, biochemistry, and structural biology, the lab investigates how light energy is absorbed and transferred in Photosystem I and Photosystem II and converted into electron transfer reactions.
Structure and Function of Photosystems I and II
Targeting the protein complexes of Photosystem I and Photosystem II, the lab analyzes the arrangement of pigments, cofactors, and subunit composition, and how these relate to energy transfer and electron transfer.
The Role of Low-Energy Chlorophylls
The lab focuses on the low-energy chlorophylls found in the Photosystem I of cyanobacteria. It combines absorption and fluorescence spectra, structural information, and theoretical calculations to investigate their origin and function.
Changes in Photosynthesis in Response to the Light Environment
Using spectroscopic and biochemical analysis, the lab studies how photosynthetic organisms adjust the function of their antenna systems and reaction centers when the quality or intensity of light changes.
New Uses of Photosynthetic Systems
The lab explores the potential of new energy uses based on natural photosynthesis, such as wavelength conversion using fluorescent proteins and luminescent materials, and the use of light derived from ultraviolet light or radiation.
MembersFaculty
The Tomo Lab's members consist of faculty members and master's and undergraduate students.As of 2026
- ProfessorTatsuya Tomo
- Assistant ProfessorYoshifumi Ueno
VoicesStudent voices
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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).
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