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 (By similarity). The SCF(CCNF) E3 ubiquitin-protein ligase complex is an integral component of the ubiquitin proteasome system (UPS) and links proteasome degradation to the cell cycle (By similarity). Mediates the substrate recognition and the proteasomal degradation of various target proteins involved in the regulation of cell cycle progression and in the maintenance of genome stability (By similarity). Mediates the ubiquitination and subsequent proteasomal degradation of CP110 during G2 phase, thereby acting as an inhibitor of centrosome reduplication (By similarity). In G2, mediates the ubiquitination and proteasomal degradation of CDC6, thereby suppressing DNA re-replication and preventing genome instability (By similarity). Involved in the ubiquitination and degradation of the substrate adapter CDH1 of the anaphase-promoting complex (APC/C), thereby acting as an antagonist of APC/C in regulating G1 progression and S phase entry (By similarity). May play a role in the G2 cell cycle checkpoint control after DNA damage, possibly by promoting the ubiquitination of MYBL2/BMYB (By similarity). Component of the SCF(CCNF) complex consisting of CUL1, RBX1, SKP1 and CCNF (By similarity). Interacts with SKP1 (By similarity). Interacts with CUL1 (By similarity). Interacts with CCNB1; interaction is required for nuclear localization of CCNB1 (By similarity). Interacts with CCP110; this interaction leads to CCP110 ubiquitination and degradation via the proteasome pathway (By similarity). Interacts (via the Cyclin N-terminal domain) with MYBL2/BMYB (By similarity). Interacts with FZR1/CDH1 (via N-terminus) (By similarity). Interacts with RRM2 (via Cy motif and when phosphorylated at 'Thr-33'); the interaction occurs exclusively in G2 and early M (By similarity). Interacts with CDC6 (via Cy motif); the interaction takes place during G2 and M phase (By similarity). Localization in the centrosome is rare in S phase cells and increases in G2 cells, Localizes on both the mother and daughter centrioles. Localization to centrosomes is not dependent on CP110. Localizes to the nucleus in G2 phase. The nuclear localization signals mediate the localization to the nucleus and are required for CCNB1 localization to the nucleus. The D box motifs 1-5 (amino acid sequence RxxL) are involved in substrate binding, such as FZR1/CDH1, and may be ubiquitinated. Degraded when the spindle assembly checkpoint is activated during the G2-M transition. Degradation is not dependent on the proteasome or ubiquitin and depends on the C-terminal PEST sequence. Phosphorylated just before cells enter into mitosis. Ubiquitinated by the anaphase-promoting complex (APC/C); leading to its degradation by the proteasome. Belongs to the cyclin family. Cyclin AB subfamily.