OE23 — Cucumis sativus

Summary

CSA_4G063440 (OE23, PSBP) in cucumber (Cucumis sativus) on chromosome 4 encodes a PSBP protein, a member of the PsbP_C and Mog1/PsbP_a/b/a-sand domain families, associated with the oxygen-evolving complex (OEC) of photosystem II. The product exhibits multiple molecular functions including protease activity, calcium ion binding, manganese binding, and kinase activity. It is localized to the chloroplast thylakoid lumen and membrane, and the OEC complex. This gene is associated with photosynthesis regulation, including downregulation of photosynthesis, light reactions, photosystem I assembly, and chlorophyll metabolism. It is also linked to stress responses, including high temperature stress, salt tolerance, and aluminum response, as well as traits such as net photosynthetic rate, chlorophyll content, flowering time, disease tolerance, and root morphology. Associations with cell elongation, stomatal opening, and abscisic acid sensitivity have also been noted.