Rho GTPase Recognition by C3 Exoenzyme Based on C3-RhoA Complex Structure

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Structural basis of Rho GTPase recognition by C3 exoenzyme

C3 exoenzyme is a mono-ADPribosyltransferase (ART) that catalyzes transfer of an ADP-ribose moiety from NAD to Rho GTPases. C3 has long been used to study the diverse regulatory functions of Rho GTPases. How C3 recognizes its substrate and ADP-ribosylation proceeds are still poorly understood. Crystal structures of C3-RhoA complex reveal that C3 recognizes RhoA via switch I, switch II and inter...

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C3 exoenzyme from Clostridium botulinum is the prototype of bacterial ADP-ribosyltransferases, which selectively modifies the Rho isoforms RhoA, RhoB and RhoC by covalent attachment of an ADP-ribose moiety. ADPribosylation results in inactivation of cellular functions of Rho. Because of its highly restricted substrate specificity, C3 is an established tool in cell biology; to this end C3 is app...

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ژورنال

عنوان ژورنال: Journal of Biological Chemistry

سال: 2015

ISSN: 0021-9258

DOI: 10.1074/jbc.m115.653220