PRPF31 and retinitis pigmentosa 1: HSP70 plays an important role in retinal dystrophies, including RP (Furukawa & Koriyama, 2016) so we have also evaluated the distribution and expression of HSP70 protein in the ARPE-19 cells overexpressing either PRPF31-GFP or A216P-GFP by immunofluorescence and Western blotting.