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The formation of complexes between small G proteins and certain of their effectors can be facilitated by aluminum fluorides. Solution studies suggest that magnesium may be able to replace aluminum in such complexes. We have determined the crystal structure of RhoA.GDP bound to RhoGAP in the presence of Mg 2+ and F − but without Al 3+ . The metallofluoride adopts a trigonal...
Enhanced blue fluorescent protein (EBFP) and enhanced green fluorescent protein (EGFP) mutants of GFP in close proximity to one another can act as a fluorescence resonance energy transfer (FRET) pair. Unstructured amino acid linkers of varying length were inserted between EBFP and EGFP, revealing that linkers even as long as 50 amino acids can be accommodated and still allow FRET to occur. This led...
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