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The common cellulolytic bacteriumCytophaga hutchinsonii uses a unique but poorly understood strategy in order to make use of cellulose. Throughout the process of cellulosic biomass breakdown, outer membrane proteins are thought to play key roles; this is evidenced by CHU_1276, which is required for the utilization of cellulose. However, the regulatory mechanism of its expression is not yet known. We found and characterized an extracytoplasmic function σ factor that is involved in coordinating the cellulolytic response ofC. hutchinsonii by directly regulating the expression ofCHU_1276 . This study makes a contribution to our understanding of the regulatory mechanism used byC. hut chinsonii in order to adjust its genetic programs and so deal with novel environmental cues.

applied and environmental microbiology

An Extracytoplasmic Function Sigma Factor Controls Cellulose Utilization by Regulating the Expression of an Outer Membrane Protein in <i>Cytophaga hutchinsonii</i>

An Extracytoplasmic Function Sigma Factor Controls Cellulose Utilization by Regulating the Expression of an Outer Membrane Protein in Cytophaga hutchinsonii