23. Which of the following is known to be involved in transcription initiation by eukaryotic RNApolymerase II?1) DNA helicase activity2) DNA polymerase activity3) Formation of an open complex4) Protein binding to specific DNA sequences5) Protein phosphorylation
(A) 1,2,3,4
(B) 2,3,4,5
(C)1,3,4
(D) 13,4,5
(E) All of the above
【mattea】評論
1. 轉錄無用來解旋的helicase，轉錄時的DNA解旋由RNA polymerase II負責2. 應是RNA polymerase activity3. RNA polymerase II解旋後形成open complex 4. RNA polymerase II接在promoter的TATA box上5. RNA polymerase II中的RNA polymerase IIO做出來的RNA會加Pi