| Modification Notes |
FBL5 is a 691 amino acid protein encoded by the human gene FBXL5. FBL5 contains one 40 amino acid F-box region, making it a member of the F-box family. FBL5 also contains four LRR (leucine-rich) repeats. F-box proteins are critical components of the SCF (Skp1-CUL-1-F-box protein) type E3 ubiquitin ligase complex and are involved in substrate recognition and recruitment for ubiquitination. F-box proteins are members of a large family that regulates cell cycle, immune response, signalling cascades and developmental programs by targeting proteins, such as cyclins, cyclin-dependent kinase inhibitors, IkB-a and b-catenin, for degradation by the proteasome after ubiquitination. Localized near the nucleus in the cytoplasm, FBL5 is ubiquitously expressed and believed to recognize and bind to phosphorylated proteins to promote their ubiquitination and degradation. |