F-box domain found in F-box only protein 22 (FBXO22) and similar proteins
FBXO22, also called FBX22, or F-box protein FBX22p44, is the substrate-recognition component of an SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex. It promotes the proteasome-dependent degradation of key sarcomeric proteins, such as alpha-actinin (ACTN2) and filamin-C (FLNC), essential for maintenance of normal contractile function. FBXO22 regulates histone H3 lysine 9 and 36 methylation levels by targeting histone demethylase KDM4A for ubiquitin-mediated proteasomal degradation. The F-box domain has a role in mediating protein-protein interactions in a variety of contexts, such as polyubiquitination, transcription elongation, centromere binding and translational repression.
Feature 1:putative Skp1 binding site [polypeptide binding site]
Evidence:
Comment:based on the structure evidences that other F-box superfamily members interact with Skp1
Comment:F-box proteins participate in SCF (Skp1-Cul1-F-box protein) complexes that function as ubiquitin E3 ligases, where the role of the F-box protein is to recruit target substrates.
Jiyao W et al.(2023). "The conserved domain database in 2023.",