This domain is found in eukaryotic aspartyl protease DDI1 (DNA Damage Inducible protein 1; MEROPS identifier A28.001). The remarkable structural similarity between this central domain of DDI1 and the retroviral proteases suggests that DDI1 functions ...
This domain is found in eukaryotic aspartyl protease DDI1 (DNA Damage Inducible protein 1; MEROPS identifier A28.001). The remarkable structural similarity between this central domain of DDI1 and the retroviral proteases suggests that DDI1 functions proteolytically during regulated protein turnover [1, 2]. DDI1 has been shown to activate an endoplasmic-reticulum isoform of the transcription factor SKN-1 in Caenorhabditis elegans when the proteasome is dysfunctional [4]. DDI1 also has an amino-terminal ubiquitin-like domain and/or a UBA (ubiquitin-associated) domain [3].