| actinin | <chemical> A protein factor that regulates the length of r-actin. It is chemically similar, but immunochemically distinguishable from actin. Chemical name: Actinins, alpha- (12 Dec 1998) |
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| alpha-actinin | An F-actin binding protein in vertebrate cells that cross-links actin filaments into regular parallel arrays. (05 Mar 2000) |
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