RNA blot analysis of GTA gene transcripts. RNA was isolated from the
strains indicated above the lines at three time points over the growth
cycle: a, b, and c represent mid-log, late-log, and early stationary
phases, respectively. Equal amounts (10 μg) of RNA were loaded in
each lane. Approximate locations of molecular weight RNA standards are
shown on the left (in kb). (A) Results when the blot was
probed with a fragment of ctrA. (B)
Results when the blot was probed with a fragment of orfg2.