Figure 1.

Genetic regulatory schematic of differentially expressed Buchnera proteins. Only a fraction of proteins differentially expressed by Buchnera bacteriocytes or embryos have conserved transcriptional regulatory factors shared with E. coli. However, several of the genes when tested by quantitative reverse transcriptase-PCR showed no difference between Buchnera life stages (indicated with ‘*'), suggesting post-transcriptional regulation may occur by small RNAs (sRNAs). sRNAs were found associated with nearly half of the genes encoding differentially expressed proteins.