Crystal structure of apo-calmodulin bound to the first two IQ motifs of myosin V reveals essential recognition features

A 2.5-Å resolution structure of calcium-free calmodulin (CaM) bound to the first two IQ motifs of the murine myosin V heavy chain reveals an unusual CaM conformation. The C-terminal lobe of each CaM adopts a semi-open conformation that grips the first part of the IQ motif (IQxxxR), whereas the N-ter...

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