Abstract
We made a series of plasmids with unique Pst restriction sites within or near the DNA that encodes the penicillinase signal sequence. Inserted DNA can be read in all three frames both within and immediately after the signal sequence. We cloned Pst-terminated DNA copies of the structural information for rat proinsulin and preproinsulin into these plasmids, forming a large number of hybrid penicillinase (bacterial) and insulin (eukaryotic) signal sequences. We then compared the levels of insulin antigen in the Escherichia coli periplasm with those inside the cells. We conclude that either the bacterial or the eukaryotic signal is sufficient to transport rat insulin antigen into the periplasmic space.
Dates
Type | When |
---|---|
Created | 19 years, 2 months ago (May 31, 2006, 4:21 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 11:18 a.m.) |
Indexed | 1 year ago (Aug. 10, 2024, 1:53 a.m.) |
Issued | 45 years, 2 months ago (June 1, 1980) |
Published | 45 years, 2 months ago (June 1, 1980) |
Published Online | 45 years, 2 months ago (June 1, 1980) |
Published Print | 45 years, 2 months ago (June 1, 1980) |
@article{Talmadge_1980, title={Eukaryotic signal sequence transports insulin antigen in Escherichia coli.}, volume={77}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.77.6.3369}, DOI={10.1073/pnas.77.6.3369}, number={6}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Talmadge, K and Stahl, S and Gilbert, W}, year={1980}, month=jun, pages={3369–3373} }