Quick microbial molecular phenotyping by differential shotgun proteomics.

Environmental Microbiology
Duarte GouveiaJean Armengaud

Abstract

Differential shotgun proteomics identifies proteins that discriminate between sets of samples based on differences in abundance. This methodology can be easily applied to study (i) specific microorganisms subjected to a variety of growth or stress conditions or (ii) different microorganisms sampled in the same condition. In microbiology, this comparison is particularly successful because differing microorganism phenotypes are explained by clearly altered abundances of key protein players. The extensive description and quantification of proteins from any given microorganism can be routinely obtained for several conditions within a few days by tandem mass spectrometry. Such protein-centred microbial molecular phenotyping is rich in information. However, well-designed experimental strategies, carefully parameterized analytical pipelines, and sound statistical approaches must be applied if the shotgun proteomic data are to be correctly interpreted. This minireview describes these key items for a quick molecular phenotyping based on label-free quantification shotgun proteomics.

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Datasets Mentioned

BETA
PXD013243
PXD009817

Software Mentioned

GhostKOALA
Analyst
DA
mixOmics
OmicsPlayground
R
RforProteomics
sPLS
Perseus
PatternLab

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