This domain is found at the C-terminal end of Conjugal transfer protein from Clostridium perfringens (TcpC) and similar proteins predominantly found in enterobacteria. TcpC is essential for efficient conjugative transfer. Its structure is similar to this of TraM from Enterococcus and the conjugative type IV secretion systems (T4SS) VirB8 proteins from Agrobacterium tumefaciens. The region represented in this entry contains two NTF2-like domains separated by a seven-amino acid linker [1,2].

1: The 2.5 A structure of the enterococcus conjugation protein TraM resembles VirB8 type IV secretion proteins. Goessweiner-Mohr N, Grumet L, Arends K, Pavkov-Keller T, Gruber CC, Gruber K, Birner-Gruenberger R, Kropec-Huebner A, Huebner J, Grohmann E, Keller W; J Biol Chem. 2013;288:2018-2028. PMID:23188825

2: The conjugation protein TcpC from Clostridium perfringens is structurally related to the type IV secretion system protein VirB8 from Gram-negative bacteria. Porter CJ, Bantwal R, Bannam TL, Rosado CJ, Pearce MC, Adams V, Lyras D, Whisstock JC, Rood JI; Mol Microbiol. 2012;83:275-288. PMID:22150951