Possible factors affecting ribosomal protein expression 1.Autogenous regulation of protein expression. 2.mRNA protein degradation. 3.mRNA secondary structure. 4.Missing factors in E.coli S-30 extract
S1 S2 S4 S5 S13? S16? S?
“Specialized” ribosome GFP X W X W Ribosome N N S N AGUGTAU UCACAUA
Future Steps and Issues 1.Increase translation efficiency. 2.Reconstitute 30S and 50S subunits. 3.Genome organization. 4.Autogenous regulation. 4. RNA processing & modifications.