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Cover Figure

ONLINE COVER This week wraps up the series on Structural Biology and features a Research Article that describes how the interaction between proteins that bind ankyrin repeat domains may be like that of a key with a lock (the ankyrin repeat domain as the lock and its partner as the key). The image shows the ankyrin repeats of the protein ANKRA2 interacting with the teeth of a key. [Image: Chris Bickel, AAAS]

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