The T2SJ proteins are pseudopilins, which are targeted to the membrane in E. Coli. T2SJ forms a complex with T2SI (Pfam:PF02501) and T2SK (Pfam:PF03934) which is part of the Type II secretion apparatus involved in the translocation of proteins across the outer membrane in E.coli. The T2SK-I-J complex has quasihelical characteristics [1].

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