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The Role Of The Leucine-Rich (Leur) Domain Of Rho Guanine Nucleotide Exchange Factor (Rgnef) In The Regulation Of Amyotrophic Lateral Sclerosis (Als) Associated Protein Tar Dna-Binding Protein Of 43 Kda (Tdp-43), Hind Amzil
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The presence of neuronal cytoplasmic inclusions (NCIs) composed of RNA-binding proteins (RBPs) and neurofilaments is considered to be ALS’s neuropathological hallmark. RGNEF has been previously shown to interact with TDP-43 and to have a regulatory effect on the expression levels of NEFL mRNA and NFL protein in vitro. Here, I examined the mechanism of the RGNEF N-terminus, leucine-rich domain (LeuR) domain’s interaction with TDP-43. I observed that the minimal domain required is 110 amino acids (LeuR110), that the Ankyrin domain adjacent to LeuR110 does not participate, and that LeuR110 forms of a high molecular weight complex with TDP-43 in …