Journal Article

Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and Proteomics: A New Era in Anaerobic Microbiology

Haroun N. Shah, Carrina J. Keys, Oliver Schmid and Saheer E. Gharbia

in Clinical Infectious Diseases

Published on behalf of Infectious Diseases Society of America

Volume 35, issue Supplement_1, pages S58-S64
Published in print September 2002 | ISSN: 1058-4838
Published online September 2002 | e-ISSN: 1537-6591 | DOI: http://dx.doi.org/10.1086/341922
Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry and Proteomics: A New Era in Anaerobic Microbiology

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Genome sequence data provide a framework for predicting potential microbial activities; however, the proteome content of the cell dictates its response to its environment. Microbiology is witnessing a major initiative to elucidate the nature of the proteome of large numbers of species. The tool driving the proteomic revolution is matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. During the analysis process, proteins are ionized and separated on the basis of their mass-to-charge ratios, which results in a characteristic mass-spectral profile. Because of the dynamic nature of the cell and the large number of external parameters that could influence its mass-spectral profile, considerable work was needed initially to optimize sample analysis and obtain consistent and reproducible results. For many anaerobes that grow poorly or are nonreactive in most diagnostic systems, proteome analysis is likely to have a major impact on microbial diagnosis and the delineation of centers of diversity associated with infections.

Journal Article.  2751 words.  Illustrated.

Subjects: Infectious Diseases ; Immunology ; Public Health and Epidemiology ; Microbiology

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