PsaG(PSI-G subunit of photosystem I) is an 11 kda membrane protein that plays an important role in electron transfer between plastocyanin and PSI and is involved in the stability of PSI complexes. The PSI-G subunit binds to PSI-B and comes into contact with Lhca1. The protein is inserted into the thylakoid via a direct or "spontaneous" pathway that does not involve the activity of any known chloroplast protein targeting mechanism. PSI-G appears to be directly or indirectly involved in the interaction of photosystem I with plastocyanin.
For research use only, not for clinical use.