||Bacteria Escherichia coli
||Maurizi MR. Proteases and protein degradation in Escherichia coli. Experientia. 1992 Feb 15 48(2):178-201. p.183 left column 2nd paragraphPubMed ID1740190
||"Most proteins of E. coli
found in the inner or outer membrane or in the periplasmic
space are synthesized with signal peptides that are
cleaved from the original translation products by one of
the signal peptidases found in the membrane. Processing
of signal peptides proceeds with a half-life < 1 min."