The transgenic construct contains a mutant human profilin 1 cDNA sequence with a V5 tag (45 bp) fused to the N-terminus and inserted between exon 2 and exon 3 of mouse prion protein gene at a unique XhoI site in the MoPrP.Xho plasmid vector. PFN1 harbors the C71G mutation associated with amyotrophic lateral sclerosis (ALS). (J:235427)