A PSA4-YCF4 complex promotes assembly of the photosystem I reaction center in Arabidopsis.

Fu-Dan Gao Qiang Xin Lin Zhang Lu-Juan Cai Jun-Xiang Ruan Jun-Hao Li Tong-Tong Song Wei-Jie Chen J. Rochaix Lian-Wei Peng

Sep 2026 · The Plant Cell · Vol 38 · 0 citations

Medicine

TL;DR

This work has identified and characterized PSA4 (Photosystem I Assembly 4), a thylakoid membrane protein conserved in land plants and green algae and proposed that PSA4 and YCF4 form a dedicated complex that promotes the assembly of the PsaA/PsaB heterodimer during the early steps of PSI biogenesis in chloroplasts.

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