FBXO8 Antibody – Rabbit Polyclonal

This gene encodes a member of the F-box protein family which is characterized by an approximately 40 amino acid motif, the F-box. The F-box proteins constitute one of the four subunits of the ubiquitin protein ligase complex called SCFs (SKP1-cullin-F-box), which function in phosphorylation-dependent ubiquitination. The F-box proteins are divided into 3 classes: Fbws containing WD-40 domains, Fbls containing leucine-rich repeats, and Fbxs containing either different protein-protein interaction modules or no recognizable motifs. The protein encoded by this gene belongs to the Fbxs class. It contains a C-terminal amino acid sequence that bears a significant similarity with a portion of yeast Sec7p, a critical regulator of vesicular protein transport. This human protein may interact with ADP-ribosylation factor(s)(ARFs) and exhibit ARF-GEF (guanine nucleotide exchange factor) activity. [provided by RefSeq, Jul 2008]

FBXO8: an F-box protein that apparently mediates the ubiquitination of Arf6. May function as a guanine nucleotide exchange factor (GEF) that activates ARF G proteins. The loss of FBXO8 correlates with poor survival in hepatocellular carcinoma.

Protein type: Ubiquitin conjugating system; GEFs, ARF; GEFs

Chromosomal Location of Human Ortholog: 4q34.1

Cellular Component: ubiquitin ligase complex

Molecular Function: ARF guanyl-nucleotide exchange factor activity

Biological Process: positive regulation of GTPase activity; regulation of ARF protein signal transduction; ubiquitin-dependent protein catabolic process