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  • Title: Molecular cloning of cDNA encoding the 110 kDa and 21 kDa regulatory subunits of smooth muscle protein phosphatase 1M.
    Author: Chen YH, Chen MX, Alessi DR, Campbell DG, Shanahan C, Cohen P, Cohen PT.
    Journal: FEBS Lett; 1994 Dec 12; 356(1):51-5. PubMed ID: 7988720.
    Abstract:
    The structures of the M110 and M21 regulatory subunits of protein phosphatase-1M, the major enzyme which dephosphorylates myosin in smooth muscle, have been deduced from cloned cDNAs. The N-terminus of the M110 subunit from rat aorta contains seven ankyrin repeats, while the C-terminus of the M21 subunit from chicken gizzard contains a leucine zipper motif. The M110 subunit is expressed in two different forms which differ in their C-terminal sequences. One of these is highly homologous to the whole of the M21 subunit.
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