Species Reactivity
Human
Specificity
Detects human Galectin-3 in direct ELISAs and Western blots. In direct ELISAs and Western blots, approximately 50% cross-reactivity with recombinant mouse Galectin-3 is observed and less than 1% cross-reactivity with recombinant human Galectin-1, -2, -4, -7, and -8 is observed.
Source
Polyclonal Goat IgG
Purification
Antigen Affinity-purified
Immunogen
E. coli-derived recombinant human Galectin‑3
Ala2-Ile250
Accession # P17931.5Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 488
Applications
Recommended
ConcentrationSample
Intracellular Staining by Flow Cytometry
5 µL/10 6 cells
See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry | Detection of Galectin‑3 in PBMC monocytes by Flow Cytometry. Peripheral blood mononuclear cell (PBMC) monocytes were stained with Goat Anti-Human Galectin‑3 Alexa Fluor® 488‑conjugated Antigen Affinity-purified Polyclonal Antibody (Catalog # IC1154G, filled histogram) or isotype control antibody (Catalog # , open histogram). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # ) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # ). View our protocol for . |
Preparation and Storage
Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Background: Galectin-3
The galectins constitute a large family of carbohydrate-binding proteins with specificity for N-acetyl-lactosamine-containing glycoproteins. At least 14 mammalian galectins, which share structural similarities in their carbohydrate recognition domains (CRD), have been identified. The galectins have been classified into the prototype galectins (-1, -2, -5, -7, -10, -11, -13, -14), which contain one CRD and exist either as a monomer or a noncovalent homodimer; the chimera galectins (Galectin-3) containing one CRD linked to a nonlectin domain; and the tandem-repeat galectins (-4, -6, -8, -9, -12) consisting of two CRDs joined by a linker peptide. Galectins lack a classical signal peptide and can be localized to the cytosolic compartments where they have intracellular functions. However, via one or more as yet unidentified non-classical secretory pathways, galectins can also be secreted to function extracellularly. Individual members of the galectin family have different tissue distribution profiles and exhibit subtle differences in their carbohydrate-binding specificities. Each family member may preferentially bind to a unique subset of cell-surface glycoproteins.
Galectin-3, also known as Mac-2, L29, CBP35, and epsilon BP, is a chimera galectin that has a tendency to dimerize. Besides the soluble protein, alternatively spliced forms of chicken Galectin-3 containing a transmembrane-spanning domain and a leucine zipper motif have been reported. Galectin-3 is expressed in tumor cells, macrophages, activated T cells, osteoclasts, epithelial cells, and fibroblasts. It binds various matrix glycoproteins including laminin, fibronectin, LAMPS, 90K/Mac-2BP, MP20, and CEA. Galectin-3 promotes cell growth and proliferation for many cell types. Galectin-3 acts intracellularly to prevent apoptosis. Depending on the cell types, Galectin-3 exhibits pro- or anti-adhesive properties. Galectin-3 has pro-inflammatory activities in vitro and in vivo. It induces pro-inflammatory and inhibits Th2 type cytokine production. Galectin-3 chemoattracts monocytes and macrophages. It activates and degranulates basophils and mast cells. Elevated circulating levels of Galectin-3 has been show to correlate with the malignant potential of several types of cancer, suggesting that Galectin-3 is also involved in tumor growth and metastasis. Human and mouse Galectin-3 shares approximately 80% amino acid sequence identity.
Entrez Gene IDs:
3958 (Human); 16854 (Mouse)
Alternate Names:
AGE-R3; Carbohydrate-binding protein 35; CBP 35,35 kDa lectin; CBP35; GAL3; Gal-3; galactin-3; Galactose-specific lectin 3; Galactoside-binding protein; GALBPCBP35; Galectin3; Galectin-3; GALIG; IgE-binding protein; L29; L31; L-31; Laminin-binding protein; Lectin L-29; lectin, galactoside-binding, soluble, 3; LGALS2; LGALS3; Mac-2 antigen; Mac-2; MAC2GAL3
