Among the genes strongly induced during infection were ferrous iron transporter ftrA, several genes implicated in sulphur metabolism including transcriptional factor iscR, cysteine desulfurase iscS, and cysteine dioxygenase BP2871 and genes involved in vitamin B6 metabolism and homoeostasis (BP1920 and BP1921) (Table 1). Here, NFS1 is linked to infection.