• Species Reactivity

  Human, Mouse, Rat

• Specificity

  Detects human, mouse, and rat Galectin-3 in Western blots. Detects mouse Galectin-3 in direct ELISAs. In direct ELISAs and Western blots, approximately 50% cross-reactivity with recombinant human (rh) Galectin-3 is observed, and less than 1% cross-reactivity with recombinant mouse (rm) Galectin-1, rhGalectin-2, rmGalectin-4, rmGalectin-7, and rhGalectin-8 is observed.

• Source

  Polyclonal Goat IgG

• Purification

  Antigen Affinity-purified

• Immunogen

  E. coli-derived recombinant mouse Galectin‑3    
  Ala2-Ile264    
  Accession # NP_034835

• Formulation

  Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.

• Label

  Unconjugated

Applications

• Recommended    
  Concentration

  Sample

• Western Blot

  0.05-0.2 µg/mL

  See below

• 
  

• Simple Western

  10 µg/mL

  See below

• 
  

• Immunohistochemistry

  5-15 µg/mL

  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

Preparation and Storage

• Reconstitution

  Reconstitute at 0.2 mg/mL in sterile PBS.

• Shipping

  The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

• Stability & Storage

  Use a manual defrost freezer and avoid repeated freeze-thaw cycles.    

• 12 months from date of receipt, -20 to -70 °C as supplied.

• 1 month, 2 to 8 °C under sterile conditions after reconstitution.

• 6 months, -20 to -70 °C under sterile conditions after reconstitution.

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 (1-4).

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 proinflammatory 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 similarity (1-5).

• References:

1. Rabinovich, A. et al. (2002) Trends in Immunol. 23:313.

2. Rabinovich, A. et al. (2002) J. Leukocyte Biology 71:741.

3. Hughes, R.C. (2001) Biochimie 83:667.

4. R&D Systems Cytokine Bulletin; Summer 2002.

5. Gorski, J.P. et al. (2002) J. Biol. Chem. 277:18840.

• 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