Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.3390/ijms242115692
Lizenz creative commons licence
Titel (primär) GroEL-proteotyping of bacterial communities using tandem mass spectrometry
Autor Klaes, S. ORCID logo ; Madan, S.; Deobald, D.; Cooper, M.; Adrian, L.
Quelle International Journal of Molecular Sciences
Erscheinungsjahr 2023
Department UBT
Band/Volume 24
Heft 21
Seite von art. 15692
Sprache englisch
Topic T7 Bioeconomy
Keywords shotgun proteomics; proteotyping; microbial communities; GroEL; chaperon; taxonomic profiling; community analysis; community composition; bottom-up proteomics; metaproteomics
Abstract Profiling bacterial populations in mixed communities is a common task in microbiology. Sequencing of 16S small subunit ribosomal-RNA (16S rRNA) gene amplicons is a widely accepted and functional approach but relies on amplification primers and cannot quantify isotope incorporation. Tandem mass spectrometry proteotyping is an effective alternative for taxonomically profiling microorganisms. We suggest that targeted proteotyping approaches can complement traditional population analyses. Therefore, we describe an approach to assess bacterial community compositions at the family level using the taxonomic marker protein GroEL, which is ubiquitously found in bacteria, except a few obligate intracellular species. We refer to our method as GroEL-proteotyping. GroEL-proteotyping is based on high-resolution tandem mass spectrometry of GroEL peptides and identification of GroEL-derived taxa via a Galaxy workflow and a subsequent Python-based analysis script. Its advantage is that it can be performed with a curated and extendable sample-independent database and that GroEL can be pre-separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) to reduce sample complexity, improving GroEL identification while simultaneously decreasing the instrument time. GroEL-proteotyping was validated by employing it on a comprehensive raw dataset obtained through a metaproteome approach from synthetic microbial communities as well as real human gut samples. Our data show that GroEL-proteotyping enables fast and straightforward profiling of highly abundant taxa in bacterial communities at reasonable taxonomic resolution.
dauerhafte UFZ-Verlinkung
Klaes, S., Madan, S., Deobald, D., Cooper, M., Adrian, L. (2023):
GroEL-proteotyping of bacterial communities using tandem mass spectrometry
Int. J. Mol. Sci. 24 (21), art. 15692 10.3390/ijms242115692