Recombinant Human Galectin-1 Protein


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Reactivity HuSpecies Glossary
Applications Bioactivity

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Recombinant Human Galectin-1 Protein Summary

Details of Functionality
Measured by its ability to agglutinate human red blood cells. Hadari, Y.R. et al. (2000) J. Cell Sci. 113:2385. The ED50 for this effect is 0.5‑3 µg/mL.
E. coli-derived human Galectin-1 protein
Accession #
N-terminal Sequence
Protein/Peptide Type
Recombinant Proteins
>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.


Theoretical MW
15 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
Read Publications using
1152-GA in the following applications:

Packaging, Storage & Formulations

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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Lyophilized from a 0.2 μm filtered solution in PBS and Betamercaptoethanol with BSA as a carrier protein.
>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.


This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human Galectin-1 Protein

  • 14 kDa laminin-binding protein
  • 14 kDa lectin
  • Beta-galactoside-binding lectin L-14-I
  • BHL
  • DKFZp686E23103
  • GAL1
  • gal-1
  • Galaptin
  • galectin 1
  • Galectin1
  • Galectin-1
  • GBP
  • HBL
  • HLBP14
  • HPL
  • L-14
  • Lactose-binding lectin 1
  • Lectin galactoside-binding soluble 1
  • lectin, galactoside-binding, soluble, 1
  • LGALS1
  • Putative MAPK-activating protein PM12
  • S-Lac lectin 1


Galectin-1, gene name LGALS1 (lectin, galactoside-binding, soluble 1), is a 135 amino acid (aa), 14 kDa, pleiotropic, non-glycosylated, monomeric or homodimeric carbohydrate-binding protein of the prototype galectin family (1-3). Galectins lack a classical signal peptide and can be localized to the cytosolic compartments, or secreted via non-classical pathways (1). Secreted Galectin-1 has immunosuppressive and anti-inflammatory properties and suppresses acute and chronic inflammation and autoimmunity. It contributes to negative selection of developing T cells, immunosuppression by regulatory T cells, resolution of the inflammatory response, and inhibition of immune cell migration, inflammatory cytokine production, and mast cell degranulation (1, 2, 4-6). Galectin-1 preferentially binds laminin, fibronectin, 90K/Mac-2BP, CD45, CD43, CD7, CD2, CD3, integrins alpha 4 beta 1, alpha 5 beta 1 and alpha 4 beta 7, and ganglioside GM1 (2, 3). It is produced in a variety of tissues by cells that include endothelial cells, connective tissue fibroblasts, thymic stromal cells, tumor cells, muscle cells, platelets, regulatory T cells, and activated tissue macrophages, B cells, T cells and dendritic cells (2, 3, 6-11). Most of this expression is cytosolic. Human Galectin-1 shares 88% aa sequence identity with mouse, equine and ovine, 90% with rat, and 87% with bovine and porcine Galectin-1.  Endothelial cell surface expression, including tumor endothelial cells, is greatly increased by cell activation (9). Galectin-1 is highly expressed at the maternal-fetal interface and contributes to fetal immune privilege (5, 12). Its immunosuppressive properties appear to also allow tumor cells to evade immune detection (4, 5). It selectively controls T cell survival by inducing apoptosis of activated Th1 and Th17 cells, which express Galectin-1-binding glycans, while promoting Th2 cell survival where glycans are sialylated and less recognized (4, 13). It also induces apoptosis of immature thymocytes (3, 6). Galectin-1 secreted from bone marrow stromal cells aids B lymphocyte development by contributing to pre-B cell integrin adhesion and receptor signaling (3). The dimer form of Galectin-1 also induces neutrophil down‑regulation by inducing cell surface exposure of phosphatidylserine that marks the cell for phagocytosis (14). Galectin-1 can also modulate cell-cell and cell-matrix interactions, and can promote either cell attachment or detachment depending on the cell type and developmental stage (1, 2).

  1. Di Lella, S. et al. (2011) Biochemistry 50:7842.
  2. Rabinovich, G.A. and J.M. Ilarregui (2009) Immunol. Rev. 230:144.
  3. Rabinovich, G.A. and M. Vidal. (2011) Curr. Opin. Hematol. 18:443.
  4. Cedeno-Laurent, F. and C.J. Dimitroff (2012) Clin. Immunol. 142:107.
  5. Than, N.G. et al. (2012) Trends Endocrinol. Metab. 23:23.
  6. Rubinstein, N. et al. (2004) Tissue Antigens 64:1.
  7. Courad, P.O. et al. (1989) J. Biol. Chem. 264:1310.
  8. Hirabayashi, J. et al. (1989) Biochim. Biophys. Acta 1008:85.
  9. Thijssen, V.L. et al. (2008) Am. J. Pathol. 172:545.
  10. Nio-Kobayashi, J. et al. (2009) J. Histochem. Cytochem. 57:41.
  11. Dias-Baruffi, M. et al. (2010) Glycobiology 20:507.
  12. Than, N.G. et al. (2008) Proc. Natl. Acad. Sci. USA 105:15819.
  13. Toscano, M.A. et al. (2007) Nat. Immunol. 8:825.
  14. Stowell, S.R. et al. (2009) J. Biol. Chem. 284:4989.

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Publications for Galectin-1 (1152-GA)(5)

We have publications tested in 3 confirmed species: Human, Bacteria, Equine.

We have publications tested in 3 applications: Bioassay, ELISA Standard, Surface Plasmon Resonance.

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ELISA Standard
Surface Plasmon Resonance
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Showing Publications 1 - 5 of 5.
Publications using 1152-GA Applications Species
MN Andersen, M Ludvigsen, N Abildgaard, I Petruskevi, R Hjortebjer, M Bjerre, B Honoré, HJ Møller, NF Andersen Serum galectin-1 in patients with multiple myeloma: associations with survival, angiogenesis, and biomarkers of macrophage activation Onco Targets Ther, 2017;10(0):1977-1982. 2017 [PMID: 28435287] (ELISA Standard, Human) ELISA Standard Human
Su Y, Davuluri G, Chen C, Shiau D, Chen C, Chen C, Lin Y, Chang C Galectin-1-Induced Autophagy Facilitates Cisplatin Resistance of Hepatocellular Carcinoma. PLoS ONE, 2015;11(2):e0148408. 2015 [PMID: 26859293] (Bioassay, Human) Bioassay Human
Lim M, Ahn J, Yi J, Kim M, Son A, Lee S, Lim D, Kim S, Kang M, Han Y, Song J Induction of galectin-1 by TGF-beta1 accelerates fibrosis through enhancing nuclear retention of Smad2. Exp Cell Res, 2014;326(1):125-35. 2014 [PMID: 24928277] (Bioassay, Human) Bioassay Human
Debierre-Grockiego F, Niehus S, Coddeville B, Elass E, Poirier F, Weingart R, Schmidt RR, Mazurier J, Guerardel Y, Schwarz RT Binding of Toxoplasma gondii glycosylphosphatidylinositols to galectin-3 is required for their recognition by macrophages. J. Biol. Chem., 2010;285(43):32744-50. 2010 [PMID: 20729207] (Surface Plasmon Resonance, Bacteria) Surface Plasmon Resonance Bacteria
Reed SA, Johnson SE Equine umbilical cord blood contains a population of stem cells that express Oct4 and differentiate into mesodermal and endodermal cell types. J. Cell. Physiol., 2008;215(2):329-36. 2008 [PMID: 17929245] (Bioassay, Equine) Bioassay Equine

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Gene Symbol LGALS1