Ubiquitin conjugating enzyme protein 1 [Caenorhabditis elegans] ref|NP_500480.1| UBiquitin Conjugating enzyme family member (ubc-1) [Caenorhabditis elegans] sp|P52478|UBC1_CAEEL Ubiquitin-conjugating enzyme E2 1 (Ubiquitin-protein ligase 1) (Ubiquitin carrier protein 1) gb|AAA83388.1| similar to yeast RAD6 DNA repair protein, Swiss-Prot Accession Number P06104