User:Mbennie/Notebook/Papers and Books/Autotransporters General
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- Jose J. Autodisplay: efficient bacterial surface display of recombinant proteins. Appl Microbiol Biotechnol. 2006 Feb;69(6):607-14. DOI:10.1007/s00253-005-0227-z |
- Focuses on AIDA-I protein which is an an autotransporter naturally expressed in e coli
- Discusses applications using AIDA-1: expressing enzymes(whole cell biocatalysis), enzyme inhibitors(library screening), and epitotes(vaccine development)
- Interesting note: passenger proteins can dimerize on the cell surface
- Rutherford N and Mourez M. Surface display of proteins by gram-negative bacterial autotransporters. Microb Cell Fact. 2006 Jun 20;5:22. DOI:10.1186/1475-2859-5-22 |
- Autotransporter = N-terminal signal peptide + passenger domain + translocator domain
- Study of autotransporters encourage because of their simplicity
- Possible issues with autotransporters
- Passenger must be in "translocation-competent state" in periplasm
- Need specific signal sequences
- Host can introduce genetic background
- Other systems: Omp85, LamB, OmpA, PhoE, OmpC, TraT, FhuA, and intimin
- Autotransporters (AT) belong to type V secretion system, specifically the type Va branch
- Form beta-barrel to stabilize protein in the outer membrane
- Passenger can undergo some level of folding in the periplasm
- Most passenger domains are cleaved into media
- "System is not amenable to the display of eukaryotic cDNA libraries."
- 50,000 - 100,000 copies per cell
- Henderson IR, Navarro-Garcia F, and Nataro JP. The great escape: structure and function of the autotransporter proteins. Trends Microbiol. 1998 Sep;6(9):370-8. DOI:10.1016/s0966-842x(98)01318-3 |
- "No energy coupling or accessory factors are known to be required for the translocation process"
- Some interesting autotransporters in e coli