?cl04524: Fimbrial_CS1 Superfamily (this model, PSSM-Id:414081 is obsolete and has been replaced by 446415)
CS1 type fimbrial major subunit Fimbriae, also known as pili, form filaments radiating from the surface of the bacterium to a length of 0.5-1.5 micrometres. They enable the cell to colonise host epithelia. This family constitutes the major subunits of CS1 like pili, including CS2 and CFA1 from Escherichia coli, and also the Cable type II pilin major subunit from Burkholderia cepacia. The major subunit of CS1 pili is called CooA. Periplasmic CooA is mostly complexed with the assembly protein CooB. In addition, a small pool of CooA multimers, and CooA-CooD complexes exists, but the functional significance is unknown. A member of this family has also been identified in Salmonella typhi and Salmonella enterica. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",