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Small, Acid-Soluble Proteins as Biomarkers in Mass Spectrometry Analysis of Bacillus Spores
The use of 1 N HCl for extraction of small, acid-soluble proteins (SASP) from different Bacillus spore species was examined. The extracts were analyzed by high-performance liquid chromatography and matrix-assisted laser desorption mass spectrometry and were found to be both qualitatively and quantit...
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| Auteurs principaux: | , , , , |
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| Format: | Article |
| Langue: | en |
| Publié: |
American Society for Microbiology
2003
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| Sujets: | |
| Accès en ligne: | https://ncbi.nlm.nih.gov/pmc/articles/PMC143666/ https://ncbi.nlm.nih.gov/pubmed/12571035 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1128/AEM.69.2.1100-1107.2003 |
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| Résumé: | The use of 1 N HCl for extraction of small, acid-soluble proteins (SASP) from different Bacillus spore species was examined. The extracts were analyzed by high-performance liquid chromatography and matrix-assisted laser desorption mass spectrometry and were found to be both qualitatively and quantitatively superior to extraction by acetonitrile-5% trifluoroacetic acid (70:30, vol/vol). Both major and minor α/β- and γ-type SASP were characterized by their molecular masses or tryptic peptide maps and by searches of both protein and unannotated genome databases. For all but 1 pair (B. cereus T and B. thuringiensis subsp. Kurstaki) among the 11 variants studied the suites of SASP masses are distinctive, consistent with the use of these proteins as potential biomarkers for spore identification by mass spectrometry. |
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