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    FEBS Lett. 1997 Jan 2;400(1):31-6.

    The rôle of the proline-rich region in A1-type myosin essential light chains: implications for information transmission in the actomyosin complex.

    Timson DJ, Trayer IP.

    School of Biochemistry, The University of Birmingham, Edgbaston, UK.

    The proline-rich region of A1-type myosin essential light chains functions as a spacer arm separating an actin binding site at the extreme N-terminus from the remainder of the protein. Alteration of the length of this region leaving the actin binding site intact results in altered actin-activated MgATPase kinetics when these light chains are hybridised into myosin subfragment-1. In the case of a mutant in which the length of the proline-rich region was doubled, actin binding by the light chain was uncoupled from kinetic modulation. The implications of this result for information transmission in the actomyosin complex are discussed.

    PMID: 9000508 [PubMed - indexed for MEDLINE]

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