Complex sentence: Also, I think it is important to specify that the gamma-TuRC includes gamma-TuSCs with GCP4, GCP5, and GCP6, but also that gamma-TuSCs alone are sufficient for MT nucleation.
Split into simpler sentences: Also, I think it is important to specify that the gamma-TuRC includes gamma-TuSCs in addition to GCP4, GCP5, and GCP6. Also also that gamma-TuSCs alone are sufficient for MT nucleation.