GO terms:
Biological Process:
protein polyubiquitination [GO:0000209],
ubiquitin-dependent protein catabolic process [GO:0006511],
positive regulation of proteasomal ubiquitin-dependent protein catabolic process [GO:0032436],
Molecular Function:
protein binding [GO:0005515],
ubiquitin conjugating enzyme binding [GO:0031624],
metal ion binding [GO:0046872],
ubiquitin protein ligase activity [GO:0061630],
ubiquitin-protein transferase activity [GO:0004842],
transferase activity [GO:0016740],
Cellular Component:
ubiquitin ligase complex [GO:0000151],
cytoplasm [GO:0005737],