Author

Naoko Ohkama‐Ohtsu

Advanced Research Center for One Welfare (Tokyo University of Agriculture and Technology)ORCID 0000-0001-6540-0097Unclaimed ORCID profile · follow to get notified of new preprints

Biology Disciplines

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Biochemistry· 2

Signature Assays, Organisms & Methods

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Approach:experimental assay· 2 Organism:Arabidopsis· 1 Research Focus:cell signaling & trafficking· 1 Organism:E. coli· 1 Assay:protein structure· 1 Research Focus:protein structure prediction· 1

Frequent Co-Authors

Hibiki SawadaiD· 2 shared Takehiro ItoiD· 2 shared Akimasa MiyanagaiD· 1 shared Chihaya YamadaiD· 1 shared Kosei SoneiD· 1 shared Shinya FushinobuiD· 1 shared Toma KashimaiD· 1 shared

Activity by Year

2025-2026 · peak 1/yr

Co-Author Collaboration Network

7 top collaborators · 21 mutual co-author links

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2 shared papersBiochemistry

Hibiki SawadaORCID

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2 papers

Recent·Most cited

Functional Analysis of cha Genes Identifies ChaC as a Glutathione-Degrading Enzyme Rather Than a Sodium Transport Regulator

Hibiki Sawada, Naoko Ohkama‐Ohtsu, Takehiro Ito

This study clarifies that ChaC in E. coli functions in glutathione degradation rather than sodium transport, and ChaB is not involved in GSH metabolism.

bioRxiv · May 19, 2026 · PreprintBiochemistry

Crystal structure of plant γ-glutamyl peptidase 1 with dual roles in sulfur metabolism and implications for oxidative stress regulation

Kosei Sone, Takehiro Ito, Hibiki Sawada, Chihaya Yamada, Toma Kashima, Akimasa Miyanaga, Naoko Ohkama‐Ohtsu, Shinya Fushinobu

This study determines the crystal structures of Arabidopsis thaliana GGP1, revealing its dual role in sulfur metabolism and its potential involvement in oxidative stress regulation.

FEBS Journal · Nov 2, 2025Peer-reviewedBiochemistry