Phosphate starvation affects the synthesis of outer membrane proteins in Thiobacillus ferrooxidans
- 1 November 1992
- journal article
- research article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 98 (1-3) , 29-33
- https://doi.org/10.1016/0378-1097(92)90127-a
Abstract
The outer membrane protein (omp40) component from the chemolithoautotrophic acidophilic Thiobacillus ferrooxidans is apparently regulated by the external pH and the concentration of phosphorus. Its amino-terminal sequence showed little identity with the Escherichia coli OmpC, OmpF or PhoE porins, but was 38.5% identical to the outer membrane channel-forming protein NosA from Pseudomonas stutzeri, whose expression is also regulated environmentally. In addition, the partial amino acid sequence of T. ferrooxidans omp40 showed between 34 and 38% identity with the amino-terminal end of the small outer membrane proteins Rck and PagC from Salmonella typhimurium and OmpX from Enterobacter cloacae.Keywords
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