Table 3.
Characteristics of B2 and non-B2 pks-positive E. coli strains with atypical features regarding pks integrity, functionality or location
|
Group |
Strain |
Origin** |
Sample |
Year |
ST |
Serotype |
hlyA (haemolysis) |
ybt (locus) |
pks (locus) |
clbJ-clbK∗ |
Megal.† |
ICL |
H2AX† |
C14-Asn †,‡ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
A |
SI-NP020 |
b |
Faeces |
2014 |
7010 |
uncl:H14 |
− (−) |
– |
+ (not tRNA) |
wt |
+ |
+ |
+ |
+++ |
|
B1 |
JML285 |
H |
Faeces |
2015 |
109 |
Gp2:H8 |
− (−) |
– |
+ (not tRNA) |
wt |
+ |
+ |
+ |
+++ |
|
HH-NP008 |
b |
Faeces |
2014 |
847 |
uncl:H2 |
− (−) |
– |
+ (not tRNA) |
wt |
+ |
+ |
nt |
nt |
|
|
KK-NP025 |
b |
Faeces |
2014 |
6488 |
uncl:H8 |
− (−) |
– |
+ (not tRNA) |
wt |
nt |
+ |
nt |
nt |
|
|
KS-NP019 |
b |
Faeces |
2013 |
392 |
O8:H2 |
+ (+) |
+ (not tRNA) |
+ (not tRNA) |
wt |
nt |
+ |
nt |
+++ |
|
|
SI-NP013 |
b |
Faeces |
2014 |
278 |
uncl:H7 |
− (−) |
– |
+ (not tRNA) |
wt |
+ |
+ |
nt |
nt |
|
|
SI-NP017 |
b |
Faeces |
2014 |
278 |
Gp2:H21 |
− (−) |
– |
+ (not tRNA) |
wt |
+ |
+ |
nt |
nt |
|
|
NS-NP014 |
b |
Faeces |
2014 |
2079 |
O8 :H19 |
− (−) |
– |
+ (not tRNA) |
f |
nt |
– |
nt |
nt |
|
|
NS-NP030 |
b |
Faeces |
2014 |
392 |
uncl:H2 |
+ (+) |
+ (not tRNA) |
+ (not tRNA) |
f |
nt |
– |
nt |
++ |
|
|
B2 |
JML114 |
H |
Faeces |
2015 |
73 |
O6:H1 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
– |
++ |
|
JML165 |
H |
Faeces |
2015 |
550 |
uncl:H5 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
nt |
++ |
|
|
JML201 |
H |
Faeces |
2015 |
95 |
O1:H1 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
nt |
nt |
|
|
JML226 |
H |
Faeces |
2015 |
73 |
Gp7:H12 |
+ (+) |
+ (asnT) |
+ (asnV) |
wt |
nt |
+ |
nt |
nt |
|
|
KS-P003 |
b |
Faeces |
2013 |
95 |
Gp7:H5 |
+ (+) |
+ (asnT) |
+ (asnU) |
wt |
nt |
+ |
nt |
nt |
|
|
KS-P027 |
b |
Faeces |
2013 |
95 |
Gp7:H5 |
+ (+) |
+ (asnT) |
+ (asnU) |
wt |
nt |
+ |
nt |
nt |
|
|
JML008 |
H |
Faeces |
2015 |
95 |
Gp7:H4 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
JML102 |
H |
Faeces |
2015 |
73 |
O6:H1 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
JML282 |
H |
Faeces |
2015 |
95 |
Gp7:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
JML288 |
H |
Faeces |
2015 |
95 |
O1:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
JML291 |
H |
Faeces |
2015 |
95 |
O1:H12 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
JML296 |
H |
faeces |
2015 |
73 |
uncl:H1 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
– |
++ |
|
|
SI-NP032 |
b |
Faeces |
2014 |
73 |
O25:H5 |
+ (+) |
+ (asnT) |
+ (asnW) |
f |
nt |
– |
nt |
++ |
|
|
ECSC09 |
H |
Blood |
2006 |
95 |
Gp7:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
nt |
nt |
|
|
UPEC57 |
H |
Urine |
2011 |
95 |
Gp7:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
– |
– |
– |
nt |
|
|
UPEC91 |
H |
Urine |
2011 |
95 |
O1:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
f |
nt |
– |
nt |
nt |
|
|
CM1 |
H |
Urine |
2006 |
95 |
O1:H1 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
nt |
– |
|
|
UPEC129 |
H |
Urine |
2011 |
uncl |
Gp7:H7 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
– |
– |
|
|
D |
ECSC054 |
H |
Blood |
2004 |
38 |
O4:H30 |
− (−) |
+ (asnT) |
+ (asnW) |
wt |
– |
– |
– |
+ |
∗wt, full-length clbJ and clbK genes; f, clbJK fusion gene.
†Megal., megalocytosis; nt, not tested.
‡−, no C14-Asn detected; +, ca. 50−400 pg C14-Asn/108 c.f.u.; ++, ca. 400−600 pg C14-Asn/108 C.F.U.; +++, ca.650−1200 pg C14-Asn/108 c.f.u.
** b, bovine; H, human.