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Fluorescence nanoscopy, or super-resolution microscopy, has become an important tool in cell biological research. However, because of its usually inferior resolution in the depth direction (50–80 nm) and rapidly deteriorating resolution in thick samples, its practical biological application has been effectively limited to two dimensions and thin samples. Here, we present the development of whole-cell...
With the realization that bacteria display phenotypic variability among cells and exhibit complex subcellular organization critical for cellular function and behavior, microscopy has re‐emerged as a primary tool in bacterial research during the last decade. However, the bottleneck in today's single‐cell studies is quantitative image analysis of cells and fluorescent signals. Here, we address current...
Formation of a Bacillus subtilis biofilm community requires an abundant matrix protein, TasA and an exopolysaccharide. The transcriptional regulatory pathways that control synthesis of these structural features are complex and responsive to multiple physiological and population signals. We report herein that an additional layer of co‐transcriptional regulation is required for exopolysaccharide (eps...
Organisms maintain the correct balance of intracellular metals primarily through metal-sensing proteins that control transport and storage of the target ion(s). Here, we reveal the basis of metal sensing and genetic control by a metalloregulatory RNA. Our data demonstrate that a previously uncharacterized orphan riboswitch, renamed the “M-box,” is a divalent metal-sensing RNA involved in Mg 2+...
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