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Which experimental method can you use to detect 3’ end processing?(a) CHIP(b) Affinity chromatography(c) Northern blot(d) ImmunofluorescenceThis question was addressed to me at a job interview.Enquiry is from Post-Transcriptional Modification in chapter Gene Expression : Transcription Prokaryotes of Cytogenetics

Answer»

Correct option is (B) Affinity chromatography

Easy explanation: An affinity chromatography using oligo T sephadex beads in the column can be USED to detect proper 3’ processing. If the RNA is properly processed the POLY A TAIL will adhere to the oligo T and will not COME out of the column without elution.



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