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The genomic region upstream of the nar operon (narGHJI) in L. plantarum WCFS1. Genes coding for molybdopterin cofactor biosynthesis (moaABEDA, mobAB, and moeAB) (dark grey), for iron transport (fecBED and narGHJI) (light grey), and for nitrite extrusion (narK) and a kinase/response regulator system (rrp4 and hpk4) (black) are found in this region. Putative genes are indicated by white arrows.
