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Cover Figure

ONLINE COVER This week features a Research Article that describes how a Ser-Thr protein kinase and pseudokinase work together to regulate the synthesis of the cell wall of Mycobacterium (see also the Perspective by Warner and Mizrahi). The image is a scanning electron micrograph of Mycobacterium smegmatis, a relative of the human pathogen, Mycobacterium tuberculosis. [Image: K. Papavinasasundaram, Department of Microbiology and Physiological Systems, University of Massachusetts Medical School, Worcester, MA, USA]

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