title: The U box is a modified RING finger - a common domain in ubiquitination.
authors.forename: L
authors.initials: L
authors.lastname: Aravind
authors.forename: E V
authors.initials: EV
authors.lastname: Koonin
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001665:Binding Sites; D017124:Conserved Sequence; D005656:Fungal Proteins / Q000737:chemistry / Q000378:metabolism*; D018398:Homeodomain Proteins / Q000737:chemistry / Q000378:metabolism; D006801:Humans; D017874:Immediate-Early Proteins / Q000737:chemistry / Q000378:metabolism; D008969:Molecular Sequence Data; D029701:Saccharomyces cerevisiae Proteins; D044763:Ubiquitin-Conjugating Enzymes; D044767:Ubiquitin-Protein Ligases; D014452:Ubiquitins / Q000378:metabolism*
chemical_list: D005656:Fungal Proteins; D018398:Homeodomain Proteins; D017874:Immediate-Early Proteins; D029701:Saccharomyces cerevisiae Proteins; D014452:Ubiquitins; C064658:RAG-1 protein; D044763:Ubiquitin-Conjugating Enzymes; D044767:Ubiquitin-Protein Ligases; C051804:Vmw110 protein, Human herpesvirus 1; C114683:UFD2 protein, S cerevisiae