Figure 1. Construction of pRN1-based shuttle vectors.
(A) Map of pRN1 showing native genes. (B) Map of pRN1-based shuttle vector(s) showing the 232-bp putative pRN1 origin of replication (red double arrow). Each vector harbors the pUC19 Apr gene and origin (red box), pyrE with or without lacS and a segment of pRN1 highlighted by black arrows. The lacS gene was deleted from pRSP1, 3, and 5 to generate pRSP2, 4, and 6.