5YQ0

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF21874	e5yq0A1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
B	PF21874	e5yq0B1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
C	PF21874	e5yq0C1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
D	PF21874	e5yq0D1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
E	PF21874	e5yq0E1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
F	PF21874	e5yq0F1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
G	PF21874	e5yq0G1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)
H	PF21874	e5yq0H1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Secreted protein CofJ (From Topology)	T: Secreted protein CofJ	F: PF21874	ECOD (1.6)

Chains	Accession	Name	Description	Comments	Source
A, B, C, D, E A, B, C, D, E, F, G, H	PF21874	CofJ protein (CofJ)	CofJ protein	This entry describes the CofJ protein family. CofJ is a soluble protein secreted via the CFA/III apparatus in Enterotoxigenic Escherichia coli (ETEC), which colonize the human gut causing severe diarrhoea. CofJ is a single-domain protein of 326 resid ...	This entry describes the CofJ protein family. CofJ is a soluble protein secreted via the CFA/III apparatus in Enterotoxigenic Escherichia coli (ETEC), which colonize the human gut causing severe diarrhoea. CofJ is a single-domain protein of 326 residues, comprised of an elongated beta-sandwich core with three alpha-helices, four 3-10 helices and multiple loops on its surface. The protein has a cluster of exposed hydrophobic side-chains at one end and structural homology to the pore-forming proteins perfringolysin O and alpha-haemolysin. The crystal structure of CofJ was determined, revealing a large beta-sandwich protein that bears no sequence or structural homology to TcpF, a protein encoded by the syntenic gene in the TCP operon of Vibrio cholerae. CofJ binds to lipid vesicles and epithelial cells, suggesting a role in membrane attachment during ETEC colonization.	Domain