Type VI secretion system spike protein VgrG3
UniProtKB accession: Q9KN42
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Go to UniProtKB: Q9KN42
UniProtKB description: Part of the type VI secretion system specialized secretion system, which delivers several virulence factors in both prokaryotic and eukaryotic cells during infection (PubMed:23341465, PubMed:23362380). Forms the spike at the tip of the elongating tube formed by haemolysin co-regulated protein Hcp. Allows the delivery of the TseL antibacterial toxin to target cells where it exerts its toxicity (PubMed:23362380). Additionally, acts directly as an effector and targets the cell wall peptidoglycan layer of prey cells for degradation via its C-terminus (PubMed:23341465, PubMed:23362380). Toxicity is counteracted by a cognate immunity protein TsiV3 (PubMed:23341465, PubMed:23362380, PubMed:24699653).
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