Ubiquitin-like protein 5 is a novel player in the UPR-PERK arm and ER stress-induced cell death. - Wei Wang; Hawkridge, Adam M.; Yibao Ma; Bei Zhang; Mangrum, John B.; Hassan, Zaneera H.; Tianhai He; Blat, Sofiya; Chunqing Guo; Huiping Zhou; Jinze Liu; Xiang-Yang Wang; et al. (Journal of Biological Chemistry, 2023)