A conserved structural motif mediates formation of the periplasmic rings in the Type III Secretion System

2009 
The type III secretion system (T3SS) of pathogenic bacteria is composed of a series of rings in the inner and outer bacterial membranes. Crystallographic studies of EscJ and PrgH, proteins that comprise the two inner membrane rings of the T3SS, suggest that a conserved structural motif serves as a platform for ring assembly. Additional docking and modeling studies reveal details of the T3SS architecture and assembly.
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