Phenotypic and genotypic characteristics associated with biofilm formation in clinical isolates of atypical enteropathogenic Escherichia coli (aEPEC) strains

Table 2 Phenotypic and genotypic characteristics of aEPEC biofilm-producing strains

Strain	Serotype	Source	Biofilm formation				Expression of adhesins			Adhesin gene sequences
			Abiotic surface		Air-liquid interface		Curli		T1F^a
			26°C	37°C	26°C	37°C	26°C	37°C		fimA	fliC	csgA	hcpA	*flu*	cah	ehaA
A91	O15:HND	Patient	+	-	+	-	+	+	+	+	-	+	-	-	-	-
A72	O26:HND	Patient	+	-	+	-	-	+	-	-	+	+	-	+	-	-
A132	O26:HND	Patient	+	-	+	-	-	-	+	+	+	-	-	+	-	-
A113	O55:HND	Patient	+	-	+	-	-	-	+	+	+	-	+	-	-	-
A15	O85:H40	Patient	-	+	-	-	-	+	+	+	-	+	-	-	+	+
A28	O103:NM	Patient	-	+	-	-	-	+	+	+	+	+	-	-	+	-
A4	O111:NM	Control	-	+	-	-	-	+	+	+	-	+	-	-	-	+
A12	O111:NM	Patient	+	-	-	+	-	-	+	+	-	-	-	+	-	-
A60	O119:H2	Patient	+	+	-	+	-	-	+	+	-	-	-	-	-	-
A67	O119:H2	Patient	-	+	-	+	-	-	+	+	-	-	-	-	-	-
A93	O119:HND	Patient	+	-	+	+	-	-	+	+	-	-	-	+	-	-
A111	O119:HND	Patient	+	-	+	+	-	-	+	+	-	-	-	-	-	-
A13	O126:NM	Patient	+	+	-	-	-	-	+	+	-	-	-	+	-	-
A5	O127:H40	Patient	+	+	+	-	+	-	-	-	-	+	-	-	-	-
A34	O127:NM	Patient	+	-	-	-	-	-	-	-	+	-	-	-	-	+
A47	O141:HND	Control	+	+	-	-	-	+	-	-	-	+	-	-	+	-
A11	O142:NM	Patient	+	+	-	-	-	-	-	-	-	-	-	+	-	-
A87	O153:H2	Patient	+	-	+	+	+	+	+	+	+	+	-	-	-	-
A36	O157:HND	Control	+	+	+	-	-	-	-	-	-	-	-	-	+	-
A92	O167:H6	Patient	+	-	+	-	+	-	+	+	-	+	-	-	-	-
A10	ONT:HND	Patient	-	+	-	-	-	-	+	+	-	-	-	+	-	-
A20	ONT:HND	Patient	+	+	-	-	-	+	+	+	-	+	-	-	-	-
A22	ONT:HND	Patient	-	+	-	-	-	-	+	+	-	-	-	-	-	-
A39	ONT:NM	Patient	+	+	-	-	-	+	+	+	-	+	-	-	-	-
A48	ONT:HND	Control	+	-	-	-	-	+	-	-	-	+	-	-	+	-
A49	ONT:HND	Patient	-	+	+	-	+	+	-	-	-	+	-	-	-	-
A68	ONT:HND	Patient	+	+	+	-	+	+	+	+	-	+	-	-	+	-
A73	ONT:HND	Control	+	-	-	-	-	-	+	+	+	-	-	-	-	-
A79	ONT:HND	Patient	+	+	+	-	-	-	+	+	+	-	-	-	-	-
A88	ONT:HND	Patient	+	-	+	+	-	-	+	+	-	-	-	-	-	-
A94	ONT:HND	Patient	+	-	-	-	-	-	-	-	-	-	-	-	+	-
A98	ONT:HND	Patient	+	-	-	-	-	+	+	+	+	+	-	-	-	+
A99	ONT:HND	Patient	+	+	-	+	-	-	+	+	+	-	-	-	-	+
A112	ONT:HND	Patient	+	+	+	-	-	-	+	+	-	-	-	-	-	-
A146	ONT:HND	Patient	+	+	+	+	+	+	+	+	-	+	-	+	-	-
A109	ONT:HND	Patient	+	-	+	+	+	-	-	-	-	+	-	-	-	-
A157	ONT:HND	Patient	+	+	+	+	-	-	+	+	+	-	+	+	-	-
Total no. of strains (n = 37)			30	21	18	11	8	14	27	27	11	17	2	9	7	5

ISSN: 1471-2180