MRNA stability

What is the half-life of a typical mRNA in E. coli?
Jennifer Braff and Caitlin Conboy in the Endy Lab at MIT measured the half-lives of some transcripts in E. coli MC4100 in a chemostat. This work was part of the Soup to nuts project.

They measured mRNA half-lives for the following BioBrick parts -

From the above data, we can calculate a mean value of 4.8E-3 for the three devices using B0032 on pSB3k3 (I7101, I7107, and I7109).

These data are consistent with measured half-lives for endogenous E. coli mRNA Bernstein. Bernstein et al. report that 80% of E. coli mRNA half-lives are between 3 and 8 min. Bernstein et al. measured a global average mRNA half-life for E. coli of 5.7 min.