attB::*P*~help~-lacO-prpC lacI neo*               pSW00 ↔ LMSW00   LMSW00                       Δ*prkA attB::*P*~help~-lacO-prkA lacI neo*               pSW00 ↔ LMSW00   LMSW00                       Δ*prkA attB::*P*~help~-lacO-prkA lacI neo* Δ*reo