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Figure 5 | BMC Microbiology

Figure 5

From: Escherichia coliYmdB regulates biofilm formation independently of its role as an RNase III modulator

Figure 5

A schematic model of biofilm formation and gene expression involving YmdB, RpoS, and RNase III . Two different pathways for biofilm formation are proposed: an RNase III-dependent pathway in which other uncharacterized factor(s) inhibit RNase III activity, thereby upregulating biofilm formation, and an RNase III-independent pathway in which both YmdB and RpoS interdependently regulate the inhibition of biofilm formation. In terms of gene expression, the level of RpoS is post-transcriptionally regulated by YmdB either directly or indirectly via the inhibition of RNase III activity [18, 20], while the level of YmdB is regulated transcriptionally by the RpoS protein [18].

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