Which RNA polymerase can bind CBP?(a) I(b) II(c) III(d) NoneThe question was posed to me in a national level competition.My question comes from Transcription in Eukaryotes : RNA Polymerases topic in section Gene Expression : Transcription Prokaryotes of Cytogenetics

Which RNA polymerase can bind CBP?(a) I(b) II(c) III(d) NoneThe questi

1.	Which RNA polymerase can bind CBP?(a) I(b) II(c) III(d) NoneThe question was posed to me in a national level competition.My question comes from Transcription in Eukaryotes : RNA Polymerases topic in section Gene Expression : Transcription Prokaryotes of Cytogenetics
Answer» CORRECT option is (b) II For explanation: CBP or C terminal binding protein BINDS to the C terminal TAIL of heptad repeats when it is phosphorylated. As RNA pol II is the only POLYMERASE with a C terminal tail, only RNA pol II will bind the hepad repeat.

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