Probable component of the SCF (SKP1-CUL1-F-box protein) E3 ubiquitin ligase complex which mediates the ubiquitination and subsequent proteasomal degradation of target proteins involved in cell cycle progression, signal transduction and transcription. Through the RING-type zinc finger, ses to recruit the E2 ubiquitination enzyme to the complex and brings it into close proximity to the substrate. Promotes the neddylation of CUL5 via its interaction with UBE2F. May play a role in protecting cells from apoptosis induced by redox agents.
Protein kinase CKII interacts with and phosphorylates the SAG protein containing ring-H2 finger motif.Son M.-Y., Park J.-W., Kim Y.-S., Kang S.-W., Marshak D.R., Park W., Bae Y.-S.Biochem. Biophys. Res. Commun. 263:743-748(1999)
Research Topic:Epigenetics and Nuclear Signaling