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ComP, the pilin DNA receptor from Neisseria. (A) (left) ribbon diagram of ComP in gold, (right) columbic electrostatic surface calculation of ComP, (B) schematics of Neisseria type IV pili showing the major pilin, PilE, as well as a putative tip complex containing PilK, PilJ, PilI, PilH, PilX, PilC, and either ComP or PilV. (C) Superimposition of ComP (gold) and PilV (blue).
