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The green fluorescent protein (GFP) from Aequorea victoria has been engineered extensively in the past to generate variants suitable for protein tagging. Early efforts produced the enhanced variant EGFP and its monomeric derivative mEGFP, which have useful photophysical properties, as well as superfolder GFP, which folds efficiently under adverse conditions. We previously generated msGFP, a monomeric...
Tools to study the abundance, distribution, and flux of intracellular molecules are crucial for understanding cellular signaling and physiology. Although powerful, the current FRET-based technology for imaging cellular metabolites is not easily generalizable. Thus, new platforms for generating genetically encoded sensors are needed. We recently developed a new class of biosensors on the basis of Spinach,...
In mammalian cells, the ‘Golgi reassembly and stacking protein’ (GRASP) family has been implicated in Golgi stacking, but the broader functions of GRASP proteins are still unclear. The yeast Saccharomyces cerevisiae contains a single non‐essential GRASP homolog called Grh1. However, Golgi cisternae in S. cerevisiae are not organized into stacks, so a possible structural role for Grh1 has been difficult...
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