Organisation of a M. avium ssp. paratuberculosis specific zinc responsive genomic island (ZnGI). Depicted are the genes map3725 to map3788. Genes responsive to zinc starvation are colored either blue (no Zur box) or green (Zur box). Location of Zur boxes and genes under their control are marked by black arrows. LSP14, LSP15 and two other gene clusters are marked by white bold arrows at the bottom.