E3 ubiquitin-protein ligase RNF5 (RNF5)

Has E2-dependent E3 ubiquitin-protein ligase activity. May work together with E2 ubiquitin-conjugating enzymes UBE2D1/UBCH5A and UBE2D2/UBC4.

Mediates ubiquitination of PXN/paxillin and Salmonella type III secreted protein sopA. May be involved in regulation of cell motility and localization of PXN/paxillin.