Elevated recombinant clyA gene expression in the uropathogenic Escherichia coli strain 536, a clue to explain pathoadaptive mutations in a subset of extraintestinal E. coli strains

Table 2 Distribution of truncated and intact clyA loci in the strains of the ECOR collection and additional extraintestinal E. coli isolates

Bacterial strain	Group¹⁾	Serotype	*clyA*locus present²⁾	Deletion variant³⁾
ECOR1-22, 25	A		+
ECOR23-24	A		Δ	I
ECOR26-30, 3234, 45, 58, 67-72	B1		+
ECOR51-57, 5960, 63-66	B2		Δ	I
ECOR61-62	B2		Δ	II
ECOR35-36, 3841, 46-50	D		+
ECOR44	D		Δ	IV
ECOR31, 37, 42	E		+
ECOR43	E		Δ	IV
J96	UTI	O4:K6	Δ	I
536	UTI	O6:K15:H31	Δ	III
IH11128	UTI	O75:K5:H	Δ	I
AD110	UTI	O6:K2:H1:F7	Δ	I
DS-17	UTI	O6:K5	Δ	I
IA-2	UTI	O6:H	Δ	I
IHE3034	NBM	O18:K1:H7	Δ	I

¹⁾The ECOR subgroups are as defined previously [16].
UTI, urinary tract infection. NBM, newborn meningitis.
²⁾+denotes that an intact clyA locus is present; Δ denotes that some deletion(s) had ocurred.
³⁾I-IV denotes the different deletion variants within the clyA locus as described in the text and in Figure1.

ISSN: 1471-2180