This entry represents the leucine-rich repeats (LRR) from F-box/LRR repeat protein 18 (also known as F-box and leucine-rich repeat protein 18, FBXL18), associated with F-box domains. This protein is the substrate-recognition component of the SCF (SKP1-CUL1-F-box protein)-type E3 ubiquitin ligase complex through its F-box [1] and the LRR motifs mediate the protein-protein interactions required for the binding of the specific substrates by SCFs complexes [2].

1: F-box proteins are receptors that recruit phosphorylated substrates to the SCF ubiquitin-ligase complex. Skowyra D, Craig KL, Tyers M, Elledge SJ, Harper JW; Cell. 1997;91:209-219. PMID:9346238

2: The F-box: a new motif for ubiquitin dependent proteolysis in cell cycle regulation and signal transduction. Craig KL, Tyers M; Prog Biophys Mol Biol. 1999;72:299-328. PMID:10581972