
Reciprocal regulation of pnp and SraG expressions. (A) Northern blot analysis of SraG and pnp mRNA and (B) Western blot analysis of PNPase in N3433 wild-type, sraG (PSraGmut) and pnp mutants (P2mut and TTGmut). Quantifications of pnp radioactivity and PNPase levels (arbitrary units) normalized relative to 5S and L20, respectively, are indicated below the gels.










