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BERP, a novel ring finger protein, binds to alpha-actinin-4 总被引:2,自引:0,他引:2
El-Husseini AE Kwasnicka D Yamada T Hirohashi S Vincent SR 《Biochemical and biophysical research communications》2000,267(3):906-911
We recently identified BERP as a novel RING finger protein belonging to the RBCC protein family. It contains an N-terminal RING finger, followed by a B-box zinc finger and a coiled-coil domain. BERP interacts with the tail domain of the class V myosins through a beta-propeller structure in the BERP C-terminal. To identify other proteins interacting with BERP, the yeast two-hybrid strategy was employed, using the RBCC domain as bait. Screening of a rat brain cDNA library identified alpha-actinin-4 as a specific binding partner for the N-terminus of BERP. This actinin isoform could be immunoprecipitated together with BERP from HEK 293 cells transfected with expression constructs for BERP and alpha-actinin-4. These proteins could also be colocalized immunohistochemically in the cytoplasm of differentiated PC12 cells. We suggest that BERP may anchor class V myosins to particular cell domains via its interaction with alpha-actinin-4. 相似文献
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