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  • Title: Crystal structure of human filamin C domain 23 and small angle scattering model for filamin C 23-24 dimer.
    Author: Sjekloća L, Pudas R, Sjöblom B, Konarev P, Carugo O, Rybin V, Kiema TR, Svergun D, Ylänne J, Djinović Carugo K.
    Journal: J Mol Biol; 2007 May 11; 368(4):1011-23. PubMed ID: 17379241.
    Abstract:
    Filamin C is a dimeric, actin-binding protein involved in organization of cortical cytoskeleton and of the sarcomere. We performed crystallographic, small-angle X-ray scattering and analytical ultracentrifugation experiments on the constructs containing carboxy-terminal domains of the protein (domains 23-24 and 19-21). The crystal structure of domain 23 of filamin C showed that the protein adopts the expected immunoglobulin (Ig)-like fold. Small-angle X-ray scattering experiments performed on filamin C tandem Ig-like domains 23 and 24 reveal a dimer that is formed by domain 24 and that domain 23 has little interactions with itself or with domain 24, while the analytical ultracentrifugation experiments showed that the filamin C domains 19-21 form elongated monomers in diluted solutions.
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