Regulatory RNAs Quiz

Small RNAs can repress levels of one protein and promote another, regulate gene expression, and cause mRNA destruction by RNase, blocking translation.

6S RNA binds RNA Pol, down-regulates transcription, and promotes transcription of survival proteins as cells enter stationary phase.

Hfq aids binding of short, imperfect matching mRNA-sRNA, stabilizes it, and helps sRNA bind mRNA target.

<p>During stationary phase, σ S factor translation is affected by mRNA-sRNA binding, either stimulated or inhibited, and it outcompetes σ 70 subunit to promote transcription of survival proteins.</p> Signup and view all the answers

<p>Riboswitches are gene transcripts that can directly sense metabolite concentration changes and control gene expression through changes in secondary structure using RNA sequences.</p> Signup and view all the answers

<p>Riboswitches can bind and respond to simple and complex metabolites</p> Signup and view all the answers

<p>It outcompetes σ70 subunit and promotes transcription of survival proteins</p> Signup and view all the answers

<p>Hfq aids binding of short, imperfect matching mRNA-sRNA and then stabilizes it</p> Signup and view all the answers

<p>By binding to complementary target mRNAs to form double-stranded RNAs and causing mRNA destruction</p> Signup and view all the answers

<p>sRNAs cause mRNA destruction by RNase, blocking translation</p> Signup and view all the answers