Draft genome sequence and characterization of commensal Escherichia coli strain BG1 isolated from bovine gastro-intestinal tract

Table 6 Adherence systems encoded by the E. coli BG1 genome

Adherence system	Gene or genes cluster	Pathotype^a	in vitro cell adherence^b	Receptor
Curli fimbriae	csgDEFG, csgBA	EHEC, ETEC, aEPEC, APEC	T84	Matrix, plasma proteins
EhaA autotransporter	ehaA	EHEC, EAEC, ETEC, AIEC, EPEC	Primary bovine epithelial cells (terminal rectum)	Unknown
EhaB autotransporter	ehaB	EHEC, UPEC, ETEC, EIEC, EAEC	NA^c	Collagen I, laminin
EhaC autotransporter	ehaC (yfaL)	EHEC, UPEC	Unknown	Unknown
ECP (E. coli Common Pilus)	ecpRABCDE	ETEC, EHEC, NMEC, EAEC, aEPEC, septicemia	HT29, Hep-2, HeLa, HTB-4	Arabinosyl residues
ELF (E. coli Laminin-binding Fimbriae)	ycbQRST	EHEC, aEPEC	HT29, Hep-2, MDBK	Laminin
F9 Fimbriae	z2200-z2206	EHEC, UPEC, APEC, AIEC, EAEC, EPEC	EBL	Bovine fibronectin, Galβ1-3GlcNAc
EaeH adhesin	eaeH	UPEC, EHEC, ETEC, NMEC	UM-UC-3, Caco-2, CHO, HeLa, Vero	Unknown
HCP (Hemorrhagic Coli Pilus)	hcpABC (ppdD-hofBC)	ETEC, EHEC, aEPEC, APEC	T84, Caco-2, HeLa, Hep-2, MDBK, cow colon explants	Laminin, fibronectin
Stg fimbriae	stgABCD	APEC, UPEC	UM-UC-3, INT 407	Unknown
T1P (Type I pili)	fimBE, fimAICDFGH	UPEC, aEPEC, EAEC, APEC, STEC	HeLa, REC, colonic and ileal enterocytes	Mannose
UpaG autotransporter	upaG	UPEC	T24	Fibronectin, laminin

^aSee the “Abbreviations” paragraph
^bCell lines: T84 (human colonic adenocarcinoma), HT29 (human colorectal adenocarcinoma), Hep-2 (epithelial cells from epidermoid carcinoma of the human larynx), HeLa (human cervix epithelial carcinoma), HTB-4 (human bladder transitional carcinoma), MDBK (Madin-Darby bovine kidney), EBL (embryonic bovine lung), UM-UC-3 (human bladder carcinoma), Caco-2 (human colon carcinoma), CHO (Chinese hamster ovary), Vero (kidney epithelial cells from an African green monkey), INT 407 (HeLa derivative), REC (humen B cell lymphoma), T24 (human bladder transitional carcinoma)
^cNA: no adherence to the cells lines tested

ISSN: 2524-6372