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Engineering synthetic interfaces between membranes has potential applications in designing non‐native cellular communication pathways and creating synthetic tissues. Here, InterSpy is introduced as a synthetic biology tool consisting of a heterodimeric protein engineered to form and maintain membrane–membrane interfaces between apposing synthetic as well as cell membranes through the SpyTag/SpyCatcher...
The revolution in fluorescence microscopy enables sub-diffraction-limit (“superresolution”) localization of hundreds or thousands of copies of two differently labeled proteins in the same live cell. In typical experiments, fluorescence from the entire three-dimensional (3D) cell body is projected along the z-axis of the microscope to form a 2D image at the camera plane. For imaging of two different...
The organization of the chromosomal DNA and ribosomes in living Escherichia coli is compared under two growth conditions: ‘fast’ (50 min doubling time) and ‘slow’ (147 min doubling time). Superresolution fluorescence microscopy reveals strong DNA‐ribosome segregation in both cases. In both fast and slow growth, free ribosomal subunits evidently must circulate between the nucleoid (where they initiate...
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