Luisa Costessi

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Adducins are a family of proteins found in cytoskeleton junctional complexes, which bind and regulate actin filaments and actin-spectrin complexes. In brain, adducin is expressed at high levels and is identified as a constituent of synaptic structures, such as dendritic spines and growth cones of neurons. Adducin-induced changes in dendritic spines are(More)
The erythrocyte membrane cytoskeleton is organized as a polygonal spectrin network linked to short actin filaments that are capped by adducin at the barbed ends. We have constructed a mouse strain deficient in beta-adducin having abnormal erythrocytes. We show here that the levels of several skeletal proteins from beta-adducin mutant erythrocytes are(More)
Adducins are a family of membrane skeleton proteins composed of alpha-, beta- and gamma-subunits that promote actin and spectrin association in erythrocytes. The alpha- and gamma-subunits are expressed ubiquitously, while the beta-subunit is found in brain and erythropoietic tissues. The brain beta-adducin protein is similar in size to that of spleen, but(More)
TDP-43 is an RNA-binding protein involved in several steps of mRNA metabolism including transcription, splicing and stability. It is also involved in ALS and FTD, neurodegenerative diseases characterized by TDP-43 nuclear depletion. We previously identified TDP-43 as a binder of the downstream element (DSE) of the β-Adducin (Add2) brain-specific(More)
Most genes have multiple polyadenylation sites (PAS), which are often selected in a tissue-specific manner, altering protein products and affecting mRNA stability, subcellular localization and/or translability. Here we studied the polyadenylation mechanisms associated to the beta-adducin gene (Add2). We have previously shown that the Add2 gene has a very(More)
Accurate 3'end processing depends on the correct recognition of polyadenylation regulatory elements by specific protein complexes. In addition to the well-known hexanucleotide motif and downstream sequence element (DSE), less-defined auxiliary elements are usually found to modulate cleavage and polyadenylation. They are generally located in close proximity(More)
Adducins are a family of membrane skeleton proteins composed of a-, band g-subunits that promote actin and spectrin association in erythrocytes. The aand g-subunits are expressed ubiquitously, while the b-subunit is found in brain and erythropoietic tissues. The brain b-adducin protein is similar in size to that of spleen, but the mRNA transcript is a(More)
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