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| Content Provider | PubMed Central |
|---|---|
| Author | Müller, M. Fisher, R. P. Rienhöfer-schweer, A. Hoffschulte, H. K. |
| Abstract | In vitro translocation of periplasmic and outer membrane proteins into inverted plasma membrane vesicles from Escherichia coli was completely prevented by the H+-ATPase inhibitor N,N'-dicyclohexylcarbodiimide (DCCD). DCCD was inhibitory to both co- and post-translational translocations, suggesting an involvement of the H+-translocating F1F0-ATPase in either mode of transport. This was verified by (i) the dependence of efficient co-translational translocation upon a low salt, i.e. F1-containing extract from membrane vesicles; (ii) the co-purification of the translocation activity present in this extract and F1-ATPase; (iii) the inability of either vesicles or their low-salt extract, derived from F1F0-ATPase-lacking mutant strains, to support translocation; and (iv) the greatly diminished extent of ATP-dependent, post-translational translocation into F1-deprived vesicles. Membranes devoid of F1 did show, however, residual translocation activity that was also found to be inhibitable by DCCD. These results suggest a dual target for DCCD in bacterial protein export, one being the H+-ATPase and the other an as yet unidentified translocation factor. |
| Starting Page | 3855 |
| File Format | |
| ISSN | 14602075 |
| e-ISSN | 14602075 |
| Journal | The EMBO Journal |
| Issue Number | 12 |
| Volume Number | 6 |
| Language | English |
| Publisher Date | 1987-12-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neuroscience Immunology and Microbiology Medicine Molecular Biology |
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