Inner Membrane Complex (IMC) protomer structure (TrwM/VirB3, TrwK/VirB4, TrwG/VirB8tails) from the fully-assembled R388 type IV secretion system determined by cryo-EM.
7oiu is a 6 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.