Entrez Summary: This gene encodes a transmembrane receptor and is often referred to as L-SIGN because of its expression in the endothelial cells of the lymph nodes and liver. The encoded protein is involved in the innate immune system and recognizes numerous evolutionarily divergent pathogens ranging from parasites to viruses, with a large impact on public health. The protein is organized into three distinct domains: an N-terminal transmembrane domain, a tandem-repeat neck domain and C-type lectin carbohydrate recognition domain. The extracellular region consisting of the C-type lectin and neck domains has a dual function as a pathogen recognition receptor and a cell adhesion receptor by binding carbohydrate ligands on the surface of microbes and endogenous cells. The neck region is important for homo-oligomerization which allows the receptor to bind multivalent ligands with high avidity. Variations in the number of 23 amino acid repeats in the neck domain of this protein are common and have a significant impact on ligand binding ability. This gene is closely related in terms of both sequence and function to a neighboring gene (GeneID 30835; often referred to as DC-SIGN or CD209). DC-SIGN and L-SIGN differ in their ligand-binding properties and distribution. Alternative splicing results in multiple variants.[provided by RefSeq, Feb 2009].
UniProt Summary: N/A
Pfam DomainsGO Terms
Pfam Domains
Lectin C
GO Terms
peptide antigen transport
ICAM-3 receptor activity
virion attachment to host cell
adhesion of symbiont to host cell
virion binding
adhesion of symbiont to host
mannose binding
viral genome replication
modulation by virus of host morphology or physiology
peptide antigen binding
modification by symbiont of host morphology or physiology
leukocyte cell-cell adhesion
intracellular transport of virus
host cell
transport of virus
calcium-dependent protein binding
cell-cell recognition
multi-organism localization
multi-organism transport
virus receptor activity
viral entry into host cell
entry into host
entry into host cell
modification of morphology or physiology of other organism involved in symbiotic interaction
modification of morphology or physiology of other organism
interaction with host
carbohydrate binding
antigen processing and presentation of peptide antigen
viral life cycle
signaling receptor activity
antigen processing and presentation
cell recognition
cell-cell adhesion
endocytosis
adaptive immune response
import into cell
viral process
innate immune response
symbiotic process
interspecies interaction between organisms
cell adhesion
biological adhesion
defense response to other organism
response to other organism
response to external biotic stimulus
response to biotic stimulus
defense response
integral component of plasma membrane
peptide transport
amide transport
intracellular signal transduction
nitrogen compound transport
immune response
extracellular region
vesicle-mediated transport
membrane
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)