Substrate recognition component of a SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Recognizes BIRC2 and DLGAP5. Plays a role downstream of PINK1 in the clearance of damaged mitochondria via selective autophagy (mitophagy) by targeting PRKN to dysfunctional depolarized mitochondria. Promotes MFN1 ubiquitination. Protein modification; protein ubiquitination. Part of the SCF (SKP1-CUL1-F-box) E3 ubiquitin-protein ligase complex SCF(FBXO7) formed of CUL1, SKP1, RBX1 and FBXO7. Interacts via its C-terminal proline-rich region with DLGAP5. Interacts with BIRC2. Interacts with CDK6 and promotes its interaction with D-type cyclin. Interacts with PSMF1. Interacts (via the N-terminal Ubl domain) with PRKN (PubMed:23933751). Interact (via N-terminal region) with PINK1 (PubMed:23933751). Interact (via N-terminal region) with PINK1. Predominantly cytoplasmic (PubMed:16096642). A minor proportion is detected in the nucleus (PubMed:16096642). Relocates from the cytosol to depolarized mitochondria (PubMed:23933751). The ubiquitin-like region mediates interaction with PRKN. The proline-rich region is important for protein-protein interactions. The disease is caused by variants affecting the gene represented in this entry. Extended N-terminus.