All constructs were created in the p2TK2SW2 plasmid background (38 (link)). Promoters and the ftsI ORF were amplified from C. trachomatis L2 (LGV Bu434) genomic DNA using the indicated primers (see Table S1 in the supplemental material). Fluorescent reporters were ordered as gBlocks and cloned using the In-Fusion HD EcoDry Cloning kit (TaKaRa). Promoter reporter constructs were created as previously described (10 (link), 39 (link)). The p2TK2SW2-E-ftsI3XFLAG was generated by replacing the Clover gene with the ftsI ORF in the previously created p2TK2SW2-E-Clover-3XFLAG plasmid (12 (link)). Dual promoter reporter cassettes [euoprom-mNG(LVA)_hctBprom-mKate2 and hctAprom-mEos3.2_hctBprom-mKate2] were then inserted upstream of E-ftsI-3XFLAG to produce the p2TK2SW2-E-ftsI-3XFLAG_euoprom-mNG(LVA)_hctBprom-mKate2, and p2TK2SW2-E-ftsI-3XFLAG_hctAprom-mEos3.2_hctBprom-mKate2 constructs.
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