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Table 1 Cat-activity of tested MG-cat-(i) and MG-cat-(i+j) strains. The results were averaged over three independently grown cultures for each clone; the scatter was 5–15%.

From: Dual-In/Out strategy for genes integration into bacterial chromosome: a novel approach to step-by-step construction of plasmid-less marker-less recombinant E. coli strains with predesigned genome structure

strain MG-cat-(i)

IS element

Activity, nmol/minxmg

MG-cat-(1)

IS 5.7

180 ± 15

MG-cat-(2)

IS 5.8

180 ± 15

MG-cat-(3)

IS 5.9

240 ± 30

MG-cat-(4)

IS 5.10

280 ± 15

MG-cat-(5)

IS 5.11

270 ± 15

MG-cat-(6)

native φ80-attB

200 ± 30

MG- cat- (i+j)

  

MG-cat-(1+2)

IS 5.7 IS 5.8

330 ± 15

MG-cat-(1+3)

IS 5.7 IS 5.9

420 ± 30

MG-cat-(2+3)

IS 5.8 IS 5.9

420 ± 30

MG-cat-(1+2+3)

IS 5.7 IS 5.8 IS 5.9

520 ± 15

MG-cat-(4+5)

IS 5.10 IS 5.11

500 ± 30

MG-cat-(4+6)

IS 5.10 native φ80-attB

370 ± 15

MG-cat-(5+6)

IS 5.11 native φ80-attB

400 ± 15

MG-cat-(4+5+6)

IS 5.10 IS 5.11 native φ80-attB

540 ± 30