Figure S4. Agarose gel electrophoresis of rRNA after repression of r-protein synthesis.

(A–G) Cultures of strains in which BY4741 (A), uL4 (B), uL18 (C), eL40 (D), uS4 (E), uS11 (F), or uS10 (G) are under galactose control were grown in galactose medium and shifted to glucose medium. At the indicated times, total RNA was prepared by the hot phenol method and fractionated on agarose gels. The figure shows images of gels stained with ethidium bromide.