... 198 8), mpr (Rufo et al., 199 0; Sloma et al., 199 0a), nprB (Tran et al., 199 1), nprE (Yang et al., 198 4), vpr (Sloma et al., 199 1), and wprA (Margot et al., 199 6) Deletions in the aprE (encoding ... and secrete proinsulin in Bacillus subtilis, Applied and Environmental Microbiology, Vol.62, pp.3 69 373, ISSN 0 099 -2240 (Print), 1 098 -5336 (Electronic) 160 Advances in Applied Biotechnology ... protein in E coli Protein Engineering Design and Selection, Vol.5, pp.201-2 09, ISSN (Print): 17410126 ISSN (Electronic): 1741-0134 Robinson C, Bolhuis A (2001) Protein targeting by the twin-arginine...