Hfq is produced by E. coli and functions:

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Question 1

Heterochromatin formation in fission yeast involves production of double-stranded RNA by:

◦ sense-antisense RNA pairing.
◦ Drosha cleavage of paired RNA molecules.
◦ an RNA-dependent RNA polymerase.
◦ a DNA-dependent RNA polymerase.
◦ complex RNA secondary folding.

Question 2

Hfq is produced by E. coli and functions:

◦ as an RNA-binding protein to bind many transcripts in the cell to alter translation levels of stress-response proteins.
◦ as an RNA-binding protein to bind many small RNAs, including oxyS RNA, to enhance its ability to bind to target mRNAs.
◦ as an RNA in RNA-RNA interactions to modulate the activity of Dicer in the RNAi pathway.
◦ as an RNA in RNA-RNA interactions to modulate the function of riboswitches.
◦ as an antisense RNA to target degradation of specific transcripts.

[GoldenBrown]

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