Recombinant Human Beta-1,3-N-acetylglucosaminyltransferase lunatic fringe (LFNG)

Uniprot Id

Q8NES3

Target Species

Human

Target Name

LFNG

Target Full Name

Beta-1,3-N-acetylglucosaminyltransferase lunatic fringe

Target Function

Glycosyltransferase that initiates the elongation of O-linked fucose residues attached to EGF-like repeats in the extracellular domain of Notch molecules. Modulates NOTCH1 activity by modifying O-fucose residues at specific EGF-like domains resulting in inhibition of NOTCH1 activation by JAG1 and enhancement of NOTCH1 activation by DLL1 via an increase in its binding to DLL1. Decreases the binding of JAG1 to NOTCH2 but not that of DLL1. Essential mediator of somite segmentation and patterning.

Target Involvement

Spondylocostal dysostosis 3, autosomal recessive (SCDO3)

Target Subcellular Location

Golgi apparatus membrane; Single-pass type II membrane protein.

Target Protein Families

Glycosyltransferase 31 family

Target Research Area

Neuroscience

Target Synonyms

3-N-acetylglucosaminyltransferase lunatic fringe; Beta-1; Beta-13-N-acetylglucosaminyltransferase lunatic fringe; lfng; LFNG_HUMAN; O-fucosylpeptide 3-beta-N-acetylglucosaminyltransferase; SCDO3

Target Background

This gene is a member of the glycosyltransferase 31 gene family. Members of this gene family, which also includes the MFNG (GeneID: 4242) and RFNG (GeneID: 5986) genes, encode evolutionarily conserved glycosyltransferases that act in the Notch signaling pathway to define boundaries during embryonic development. While their genomic structure is distinct from other glycosyltransferases, these proteins have a fucose-specific beta-1, 3-N-acetylglucosaminyltransferase activity that leads to elongation of O-linked fucose residues on Notch, which alters Notch signaling. The protein encoded by this gene is predicted to be a single-pass type II Golgi membrane protein but it may also be secreted and proteolytically processed like the related proteins in mouse and Drosophila (PMID: 9187150). Mutations in this gene have been associated with autosomal recessive spondylocostal dysostosis 3.