The C-terminal Myc/DDK-tagged pCMV6 empty vector and the human RLTPR expression vector were purchased from OriGene (RC217662). Constructs carrying mutant alleles were generated from this plasmid by direct mutagenesis with a site-directed mutagenesis kit (QuickChange II XL; Agilent Technologies), according the manufacturer’s instructions. For coimmunoprecipitation experiments, full-length RLTPR WT cDNA was subcloned into the V5/His-tagged pcDNA3.1 plasmid using the directional TOPO expression kit (Thermo Fisher Scientific). HEK293T cells were transiently transfected with the various constructs, using the Lipofectamine LTX kit (Thermo Fisher Scientific), according to the manufacturer’s instructions. The 3D structure of the CARMIL LRR region was previously described (Zwolak et al., 2013 (link)). The 3D structure picture and mutations were displayed using Protein Workshop 4.2.0 (Moreland et al., 2005 (link)).