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Cover Figure

COVER This week features a Teaching Resource on the structures of G proteins and G protein-coupled receptors. The image shows a ribbon structure for rhodopsin. [Image: reproduced from Palczewski et al., Science 289:739-745 (2000).]

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