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  • Title: Acf7 (MACF) is an actin and microtubule linker protein whose expression predominates in neural, muscle, and lung development.
    Author: Bernier G, Pool M, Kilcup M, Alfoldi J, De Repentigny Y, Kothary R.
    Journal: Dev Dyn; 2000 Oct; 219(2):216-25. PubMed ID: 11002341.
    Abstract:
    Several proteins belonging to the plakin family of cytoskeletal linker proteins have recently been identified, including dystonin/Bpag1 and plectin. These proteins are unique in their abilities to form bridges between different cytoskeletal elements through specialized modular domains. We have previously reported the cloning and partial characterization of Acf7, a novel member of the plakin family. More recently, the full-length cDNA for mouse Acf7 has been reported. Acf7 has a hybrid composition, with extended homology to dystonin/Bpag1 and plectin in the N-terminal half, and to dystrophin in the central and C-terminal half. Recent studies have demonstrated that Acf7 has functional actin and microtubule binding domains. Here, we describe the developmental expression profile for mouse Acf7. RNA in situ hybridization experiments revealed Acf7 transcripts in the dermomyotome and neural fold of day 8.5 mouse embryos. Later in development, Acf7 expression was predominant in neural and muscle tissues and was strongly up-regulated just before birth in type II alveolar cells of the lung. Altogether, our results suggest that Acf7 functions as a versatile cytoskeletal linker protein and plays an important role in neural, muscle, and lung development.
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