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Cover Figure

COVER This week features a Review on the relationship between heterotrimeric guanosine triphosphate-binding protein (G protein) structure and function. The image depicts a space-filling view of Gαβγt. [Image: Protein Data Bank (PDB) file 1GOT]

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Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882