6.2.1.45	A MUB E2 structure reveals E1 selectivity between cognate ubiquitin E2s in eukaryotes	Arabidopsis thaliana	
6.2.1.45	A viable ubiquitin-activating enzyme mutant for evaluating ubiquitin system function in Saccharomyces cerevisiae	Saccharomyces cerevisiae	
6.2.1.45	Changes in expression of interferon-stimulated genes and ubiquitin activating enzyme E1-like in ovine thymus during early pregnancy	Ovis aries	
6.2.1.45	Comparative proteomic analysis of wild-type and SAP domain-mutant Foot-and-mouth disease virus (FMDV)-infected porcine cells identifies the ubiquitin-activating enzyme UBE1 required for virus replication	Sus scrofa	
6.2.1.45	Conjugation of the ubiquitin activating enzyme UBE1 with the ubiquitin-like modifier FAT10 targets it for proteasomal degradation	Homo sapiens	
6.2.1.45	Construction of a mouse Aos1-Uba2 chimeric SUMO-E1 enzyme, mAU, and its expression in baculovirus-insect cells	Mus musculus	
6.2.1.45	Crystal structure of the human ubiquitin-activating enzyme 5 (UBA5) bound to ATP: mechanistic insights into a minimalistic E1 enzyme	Homo sapiens	
6.2.1.45	Crystal structure of UBA2ufd-Ubc9: Insights into E1-E2 interactions in Sumo pathways	Saccharomyces cerevisiae	
6.2.1.45	Crystal structures reveal catalytic and regulatory mechanisms of the dual-specificity ubiquitin/FAT10 E1 enzyme Uba6	Homo sapiens	
6.2.1.45	Designed semisynthetic protein inhibitors of Ub/Ubl E1 activating enzymes	Schizosaccharomyces pombe