[cellular_component] Cul2-RING ubiquitin ligase complex <sep> Cul3-RING ubiquitin ligase complex <sep> Cul4A-RING E3 ubiquitin ligase complex <sep> Cul4B-RING E3 ubiquitin ligase complex <sep> Cul5-RING ubiquitin ligase complex <sep> Cul7-RING ubiquitin ligase complex <sep> cullin-RING ubiquitin ligase complex <sep> cytoplasm <sep> cytosol <sep> nucleoplasm <sep> nucleus <sep> SCF ubiquitin ligase complex