pfam14203: TTRAP (This model is not part of the current CDD release)
Putative tranposon-transfer assisting protein
TTRAP is a family of small bacterial proteins largely from Clostrium difficile. From comparative and other structural studies of the Structure 2L7K, UniProtKB:Q18AW3, it has been suggested that this family is required for interacting with other proteins in order to facilitate the transfer of the transposon CTn4 between different bacterial species. Structure 2L7K comprises an alpha-helical fold of four alpha-helices leading to the production of two clefts, the larger of which displays two highly conserved residues in close proximity, Glu-8 and Lys-48. The gene concerned is part of an operon within transposon CTn4, and is expressed alongside a putative DNA primase, a DNA topoisomerase and conjugal transfer proteins.
Jiyao W et al.(2023). "The conserved domain database in 2023.",