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| Content Provider | Journal of Biological Chemistry (JBC) |
|---|---|
| Author | Faß, Silke H. Engels, Joachim W. |
| Abstract | The Streptomyces α-amylase inhibitor tendamistat is secreted by a signal peptide with an amino-terminal charge of +3. To elucidate the influence of the charged residues on protein secretion in Streptomyces, the amino-terminal charge was varied from +6 to neutral net charge. The effects of charge variation were analyzed in combination with three Streptomyces promoters and two transcriptional terminators. Introduction of additional positive charges significantly decreased the amount of secreted tendamistat. On the contrary, a charge reduction to +2 resulted in the doubling of inhibitor production. After exclusion of transcriptional effects, the observed alterations of inhibitor secretion by the mutants with a charge of +6 to +2 were attributed to a modulation of precursor synthesis. Furthermore, a tight coupling of synthesis and export was stated. Charge reduction to +1 or neutral charge generally reduced the yield of secreted tendamistat, yet remarkable differences were found for mutants with identical net charge. Elimination of the positive charge at a defined position resulted in the release of tendamistat precursor protein, which suggested a specific uncoupling of synthesis and translocation. |
| Related Links | http://www.jbc.org/content/271/25/15244.abstract |
| Ending Page | 15252 |
| Starting Page | 15244 |
| Page Count | 9 |
| File Format | HTM / HTML PDF |
| ISSN | 00219258 |
| Journal | Journal of Biological Chemistry (JBC) |
| Issue Number | 25 |
| Volume Number | 271 |
| DOI | 10.1074/jbc.271.25.15244 |
| e-ISSN | 1083351X |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology |
| Publisher Date | 1996-06-21 |
| Access Restriction | Open |
| Subject Keyword | Nucleic Acids, Protein Synthesis, and Molecular Genetics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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