Protein Domain : Type VI secretion system protein TssA-like IPR017740

Type	Family
Description	This entry represents one of two related families in type VI secretion systems (T6SS) that contain an ImpA-related N-terminal domain ( ). This group includes Rhizobium leguminosarum ImpA [ ], thought to be an T6SS homologue [].This entry also includes TssA, which is a T6SS component forming dodecameric ring structures positioned at one end of the TssB/TssC sheath. [ ]. The type VI secretion system (T6SS) is a supra-molecular bacterial complex that resembles phage tails. It is a toxin delivery systems which fires toxins into target cells upon contraction of its TssBC sheath [ ]. Thirteen essential core proteins are conserved in all T6SSs: the membrane associated complex TssJ-TssL-TssM, the baseplate proteins TssE, TssF, TssG, and TssK, the bacteriophage-related puncturing complex composed of the tube (Hcp), the tip/puncturing device VgrG, and the contractile sheath structure (TssB and TssC). Finally, the starfish-shaped dodecameric protein, TssA, limits contractile sheath polymerization at its distal part when TagA captures TssA [].
Short Name	TssA-like