Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus
Staphylococcus aureus possesses three MsrA enzymes (MsrA1, MsrA2, MsrA3) that reduce the S-epimer of methionine sulfoxide (MetO) and an MsrB enzyme that reduces R-MetO. The four msr genes are expressed from three different promoters. The msrA1/msrB genes are coexpressed. To determine the expressio...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Microbiology |
| Online Access: | http://dx.doi.org/10.1155/2012/719594 |
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| author | Kuldeep Singh Vineet K. Singh |
| author_facet | Kuldeep Singh Vineet K. Singh |
| author_sort | Kuldeep Singh |
| collection | DOAJ |
| description | Staphylococcus aureus possesses three MsrA enzymes (MsrA1, MsrA2, MsrA3) that reduce the S-epimer of methionine sulfoxide (MetO) and an MsrB enzyme that reduces R-MetO. The four msr genes are expressed from three different promoters. The msrA1/msrB genes are coexpressed. To determine the expression pattern of msr genes, three independent reporter strains were constructed where msr promoter was cloned in front of a promoterless lacZ and the resulting construct was integrated in the chromosome. Using these strains, it was determined that the msrA1/B expression is significantly higher in S. aureus compared to msrA2 or msrA3. Expression of msrA1/B was highest during stationary phase growth, but the expression of msrA2 and msrA3 was highest during the early to midexponential growth phase. Expression of msrA1/B was induced by oxacillin and the expression of msrA3 was upregulated by salt. Expression of msrA2 remained unchanged under all tested conditions. |
| format | Article |
| id | doaj-art-0dd418bae3344ed799c6d2943aec2ee0 |
| institution | Kabale University |
| issn | 1687-918X 1687-9198 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Microbiology |
| spelling | doaj-art-0dd418bae3344ed799c6d2943aec2ee02025-02-03T01:01:26ZengWileyInternational Journal of Microbiology1687-918X1687-91982012-01-01201210.1155/2012/719594719594Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureusKuldeep Singh0Vineet K. Singh1Microbiology and Immunology, Kirksville College of Osteopathic Medicine, A.T. Still University of Health Sciences, Kirksville, MO 63501, USAMicrobiology and Immunology, Kirksville College of Osteopathic Medicine, A.T. Still University of Health Sciences, Kirksville, MO 63501, USAStaphylococcus aureus possesses three MsrA enzymes (MsrA1, MsrA2, MsrA3) that reduce the S-epimer of methionine sulfoxide (MetO) and an MsrB enzyme that reduces R-MetO. The four msr genes are expressed from three different promoters. The msrA1/msrB genes are coexpressed. To determine the expression pattern of msr genes, three independent reporter strains were constructed where msr promoter was cloned in front of a promoterless lacZ and the resulting construct was integrated in the chromosome. Using these strains, it was determined that the msrA1/B expression is significantly higher in S. aureus compared to msrA2 or msrA3. Expression of msrA1/B was highest during stationary phase growth, but the expression of msrA2 and msrA3 was highest during the early to midexponential growth phase. Expression of msrA1/B was induced by oxacillin and the expression of msrA3 was upregulated by salt. Expression of msrA2 remained unchanged under all tested conditions.http://dx.doi.org/10.1155/2012/719594 |
| spellingShingle | Kuldeep Singh Vineet K. Singh Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus International Journal of Microbiology |
| title | Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus |
| title_full | Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus |
| title_fullStr | Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus |
| title_full_unstemmed | Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus |
| title_short | Expression of Four Methionine Sulfoxide Reductases in Staphylococcus aureus |
| title_sort | expression of four methionine sulfoxide reductases in staphylococcus aureus |
| url | http://dx.doi.org/10.1155/2012/719594 |
| work_keys_str_mv | AT kuldeepsingh expressionoffourmethioninesulfoxidereductasesinstaphylococcusaureus AT vineetksingh expressionoffourmethioninesulfoxidereductasesinstaphylococcusaureus |