Fig. 5. Effect of mutations on the 3′–5′ exonuclease activity. (A) Autoradiograms show degradation of the terminally labeled transcript in TEC-21U by the wild-type and mutant RNAPs. (B) Dependence of the rate of UMP cleavage on Mg2+ concentration.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.