This antibody targets PSAE2, a protein that plays a crucial role in photosystem I (PSI) function. Specifically, PSAE2 stabilizes the interaction between PsaC and the PSI core, facilitates ferredoxin docking to PSI, and interacts with ferredoxin-NADP+ oxidoreductase.
Further research supports the role of PSAE2. For example, a study demonstrated that a psae1-3 psae2-1 double mutant, lacking the E subunit of PSI (PSAE2), still exhibited photoautotrophic growth. This suggests functional redundancy or alternative pathways compensating for PSAE2 absence. PMID: 17503073