Which RNA transcript would be capped by the capping enzymes in vitro mixture of RNA?(a) Pol II transcripts(b) Pol I and Pol III transcripts(c) Pol I transcripts(d) Pol I, Pol II and Pol III transcriptsThe question was asked by my college professor while I was bunking the class.I need to ask this question from Post-Transcriptional Modification in division Gene Expression : Transcription Prokaryotes of Cytogenetics

Which RNA transcript would be capped by the capping enzymes in vitro m

1.	Which RNA transcript would be capped by the capping enzymes in vitro mixture of RNA?(a) Pol II transcripts(b) Pol I and Pol III transcripts(c) Pol I transcripts(d) Pol I, Pol II and Pol III transcriptsThe question was asked by my college professor while I was bunking the class.I need to ask this question from Post-Transcriptional Modification in division Gene Expression : Transcription Prokaryotes of Cytogenetics
Answer» The correct OPTION is (d) POL I, Pol II and Pol III transcripts The explanation: In vivo, only pol II transcripts are capped, however in VITRO when the different pol transcripts are mixed with the CAPPING enzymes all of them are capped SHOWING no specificity.

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