New insights into the distribution of WXG100 protein secretion systems

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Protein secretion is an important aspect of bacterial interaction with the environment. The WXG100 secretion system is a poorly understood pathway for the secretion of members of the WXG100 protein family in Firmicutes and Actinobacteria, notably Mycobacteria. This pathway has also been termed the Type VII secretion system but there are semantic problems with this nomenclature. This Perspective reviews the phylum level distribution of WXG100 secretion systems and presents comparative genomic evidence that these systems are present in several Chloroflexi and in some members of the phyla Cyanobacteria, Lentisphaerae, Proteobacteria (notably Helicobacter pylori) and Verrucomicrobiae. These findings have implications for the nomenclature of the WXG100 secretion pathway.
Original languageEnglish
Pages (from-to)127-131
JournalAntonie van Leeuwenhoek
Issue number2
Publication statusPublished - 2011


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