| 摘要 |
An intracellular selection system allows concurrent screening for peptide bioactivity and stability. Randomized recombinant peptides are screened for bioactivity in a tightly regulated expression system, preferably derived fro m the wild-type lac operon. Bioactive peptides thus identified are inherently protease- and peptidase-resistant. Also provided are bioactive peptides stabilized by a stabilizing group at either the N-terminus, the C-terminus, or both. The stabilizing group can take the form of a small stable protein, suc h as the Rop protein, glutathione sulfotransferase, thioredoxin, maltose bindi ng protein, or glutathione reductase, or one or more proline residues. |
