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Chinese Journal of Cancer ; (12): 440-448, 2012.
Article in English | WPRIM | ID: wpr-295851

ABSTRACT

A recently identified protein, FAN1 (FANCD2-associated nuclease 1, previously known as KIAA1018), is a novel nuclease associated with monoubiquitinated FANCD2 that is required for cellular resistance against DNA interstrand crosslinking (ICL) agents. The mechanisms of FAN1 regulation have not yet been explored. Here, we provide evidence that FAN1 is degraded during mitotic exit, suggesting that FAN1 may be a mitotic substrate of the anaphase-promoting cyclosome complex (APC/C). Indeed, Cdh1, but not Cdc20, was capable of regulating the protein level of FAN1 through the KEN box and the D-box. Moreover, the up- and down-regulation of FAN1 affected the progression to mitotic exit. Collectively, these data suggest that FAN1 may be a new mitotic substrate of APC/CCdh1 that plays a key role during mitotic exit.


Subject(s)
Anaphase-Promoting Complex-Cyclosome , Bone Neoplasms , Metabolism , Pathology , Cadherins , Genetics , Metabolism , Cdc20 Proteins , Cell Cycle Proteins , Genetics , Metabolism , Cell Line, Tumor , Exodeoxyribonucleases , Genetics , Metabolism , HEK293 Cells , Humans , Mitosis , Osteosarcoma , Metabolism , Pathology , Ubiquitin-Protein Ligase Complexes , Genetics , Metabolism
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