Type VI secretion system sheath protein TssC1

UniProtKB accession:  Q9I748

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UniProtKB description:  Core component of the H1 type VI (H1-T6SS) secretion system that plays a role in the release of toxins targeting both eukaryotic and prokaryotic species. Forms the sheath of the structure by assembling into tubules together with TssB1 resulting in the stacking of cogwheel-like structures showing predominantly a 12-fold symmetry (PubMed:23341461, PubMed:29307484). The sheath contracts to provide the energy needed for effector delivery (PubMed:29307484).