Table 1 Escherichia coli K-12 strains

VS111

F^- ΔtopA75 zci2234::cat Δfnr-267? rph-1

CGSC [11]

MG1655 and derivatives

N4560

ΔrecG::cat

[26]

N4704

rnhA::cat

[15]

N6052

ΔrecG::apra

[13]

AM2283

ΔlacIZYA ΔproB::rnhA ⁺ -frt > kan > frt

This study

AM2284

ΔlacIZYA ΔproB::rnhA⁺- frt > kan > frt pCP20

AM2283 × pCP20 to Ap^r

AM2285

ΔlacIZYA ΔproB::rnhA ⁺ - frt

AM2284

AM2290

ΔlacIZYA ΔproB::rnhA ⁺ - frt > kan > frt

TB28 × P1.AM2283 to Km^r

AM2304

ΔlacIZYA ΔproB::rnhA ⁺ - frt > kan > frt ΔrecG::apra

AM2290 × P1.N6052 to Apra^r

AS1047

ΔlacIZYA pAST111

TB28 × pAST111 to Ap^r

AS1050

ΔlacIZYA ΔtopA::apra pAST111

AS1047 × P1.RCe296 to Apra^r

AS1053

ΔlacIZYA topA::apra ΔrecG::cat pAST111

AS1050 × P1.N4560 to Cm^r

AS1054

ΔlacIZYA topA::apra rnhA::cat pAST111

AS1050 × P1.N4704 to Cm^r

AS1066

ΔlacIZYA topA::apra pAST111 pECR17

AS1050 × pECR17 to Ap^r Km^r

AS1067

ΔlacIZYA topA::apra ΔrecG::cat pAST111 pECR17

AS1053 × pECR17 to Ap^r Km^r

AS1068

ΔlacIZYA topA::apra rnhA::cat pAST111 pECR17

AS1054 × pECR17 to Ap^r Km^r

AS1070

ΔlacIZYA ΔtopA75 zci-2234::cat pAST111

AS1047 × P1.VS111 to Cm^r

AS1130

ΔlacIZYA ΔproB::rnhA⁺-frt pAST111

AM2285 × pAST111 to Ap^r

AS1131

ΔlacIZYA ΔproB::rnhA⁺-frt topA::apra pAST111

AS1130 × P1.RCe296 to Apra^r

AS1133

ΔlacIZYA topA::apra pAST111 pAST120

AS1050 × pAST120 to Km^r (Ap^r)

AS1134

ΔlacIZYA ΔproB::rnhA⁺- frt > kan > frt ΔrecG::apra pJJ100

AM2304 × pJJ100 to Ap^r

AS1137

ΔlacIZYA ΔproB::rnhA⁺- frt > kan > frt ΔrecG::apra rnhA::cat pJJ100

AS1134 × P1.N4704 to Cm^r

AS1139

ΔlacIZYA ΔproB::rnhA⁺- frt topA::apra pAST111 pECR17

AS1131 × pERC17 to Km^r (Ap^r)

RCe296

topA::apra

This study

TB28

ΔlacIZYA

[12]