PMID: 17379241 , Related PDB id: 2NQC

Authors:

Sjekloca L, Pudas R, Sjoblom B, Konarev P, Carugo O, Rybin V, Kiema TR, Svergun D, Ylanne J, Djinovic Carugo K

Title:

Crystal structure of human filamin C domain 23 and small angle scattering model for filamin C 23-24 dimer.

Journal:

J Mol Biol. 2007 May 11;368(4):1011-23. Epub 2007 Feb 20.

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.