Figure 6.
TBP and TFIIA are required for Pol II transcription of the His genes. (A) Unsynchronized S2 cells were stained for Pol II P-Ser5 (green) and MPM2 (red) after treatment with dsRNA for knock down of TBP, TFIIA-L, TFIIB, and TAF4. Upper panel shows representative pictures. (B) Fraction of MPM-2 dot that co-localized with Pol II signal dots after depletion of different PIC components. Average of 2-3 RNAi experiments (N=72-103, 26 for TFIIB).