Recombinant Human Ficolin-3 (FCN3)

Uniprot Id

O75636

Target Species

Human

Target Name

FCN3

Target Full Name

Ficolin-3

Target Function

May function in innate immunity through activation of the lectin complement pathway. Calcium-dependent and GlcNAc-binding lectin. Has affinity with GalNAc, GlcNAc, D-fucose, as mono/oligosaccharide and lipopolysaccharides from S.typhimurium and S.minnesota.

Target Involvement

Ficolin 3 deficiency (FCN3D)

Target Subcellular Location

Secreted. Note=Found in blood plasma, bronchus, alveolus and bile duct.

Target Protein Families

Ficolin lectin family

Target Tissue Specificity

Liver and lung. In liver it is produced by bile duct epithelial cells and hepatocytes. In lung it is produced by both ciliated bronchial epithelial cells and type II alveolar epithelial cells.

Target Research Area

Immunology

Target Synonyms

FCN3; FCNH; HAKA1; Ficolin-3; Collagen/fibrinogen domain-containing lectin 3 p35; Collagen/fibrinogen domain-containing protein 3; Hakata antigen

Target Background

Ficolins are a group of proteins which consist of a collagen-like domain and a fibrinogen-like domain. In human serum, there are two types of ficolins, both of which have lectin activity. The protein encoded by this gene is a thermolabile beta-2-macroglycoprotein found in all human serum and is a member of the ficolin/opsonin p35 lectin family. The protein, which was initially identified based on its reactivity with sera from patients with systemic lupus erythematosus, has been shown to have a calcium-independent lectin activity. The protein can activate the complement pathway in association with MASPs and sMAP, thereby aiding in host defense through the activation of the lectin pathway. Alternative splicing occurs at this locus and two variants, each encoding a distinct isoform, have been identified.