Document Detail


Strain-level typing and identification of bacteria using mass spectrometry-based proteomics.
MedLine Citation:
PMID:  22452665     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Due to the alarming expansion in the diversity and occurrence of bacteria displaying virulence and resistance to anti-microbial agents, it is increasingly important to be able to detect these microorganisms and to differentiate and identify closely related species, as well as different strains of a given species. In this study, a mass spectrometry proteomics approach is applied, exploiting lipid-based protein immobilization (LPI), wherein intact bacterial cells are bound, via membrane-gold interactions, within a FlowCell. The bound cells are subjected to enzymatic digestion for the generation of peptides, which are subsequently identified, using LC-MS. Following database matching, strain-specific peptides are used for sub-species-level discrimination. The method is shown to enable a reliable typing and identification of closely related strains of the same bacterial species, herein illustrated for Helicobacter pylori.
Authors:
Roger Karlsson; Max Davidson; Liselott Svensson-Stadler; Anders Karlsson; Kenneth Olesen; Elisabet Carlsohn; Edward R Moore
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-3-27
Journal Detail:
Title:  Journal of proteome research     Volume:  -     ISSN:  1535-3907     ISO Abbreviation:  -     Publication Date:  2012 Mar 
Date Detail:
Created Date:  2012-3-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101128775     Medline TA:  J Proteome Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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