Fig. 1From: Implementation of the agmatine-controlled expression system for inducible gene expression in Lactococcus lactis Genetic organization of the AGDI cluster of L. lactis CECT 8666. Physical map showing the cluster to be composed of five genes: aguR which encodes a transcription regulator, followed by aguB, aguD, aguA and aguC, which encode the proteins involved in the putrescine biosynthesis pathway (GenBank: AZSI00000000.1). The P aguR and P aguB promoters are shaded in grey, and the terminators indicated. The predicted transcripts are indicated below (dotted arrows). The cre site is shaded in black Back to article page