Protein Sorting System in Bacteria
Author Information
Author(s): Daniel H Haft, Ian T Paulsen, Naomi Ward, Jeremy D Selengut
Primary Institution: The Institute for Genomic Research
Hypothesis
The study investigates the PEP-CTERM and EpsH system as a novel protein export sorting mechanism in bacteria.
Conclusion
The findings suggest that PEP-CTERM and EpsH form a protein export sorting system correlated to exopolysaccharide expression in bacteria from sediments, soils, and biofilms.
Supporting Evidence
- PEP-CTERM domains are found in bacteria with both inner and outer membranes.
- The study identified over 300 instances of the PEP-CTERM domain across 19 different genomes.
- Most PEP-CTERM proteins are encoded by single-gene operons with large intergenic regions.
Takeaway
Scientists found a special part of proteins in some bacteria that helps them move proteins to the right place in the cell, especially in muddy or wet areas.
Methodology
The study used phylogenetic profiling to identify the presence of PEP-CTERM domains and their correlation with EpsH proteins across various bacterial genomes.
Limitations
The study may not account for all bacterial species, particularly those lacking the PEP-CTERM domain.
Digital Object Identifier (DOI)
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