Figure 1
From: A bacteriocin gene cluster able to enhance plasmid maintenance in Lactococcus lactis
Schematic drawing of the plasmids bearing the Lcn972 gene cluster. The plasmids are based on the pIL252 replicon (4.6 kbp) besides pTLR1_Lcn972, which is based on pTLR1, and pBL1, which is the original plasmid found in the wild-type Lcn972-producing strain L. lactis IPLA972. Black arrow: structural lcn972 gene; grey arrows: immunity genes; white arrow: hypothetical orf4. The different promoters driving expression of the Lcn972 gene cluster are shown in circles. P*972: mutated promoter. The size of each plasmid is shown in brackets.