Name :
Recombinant Human Galectin-1/LGALS1 Protein
Biological Activity :
Background :
Galectin-1 (Gal-1, GAL1), is a member of the galectins, a family of animal lectins ranging from Caenorhabditis elegans to humans, which is defined by their affinity for beta-galactosides and by significant sequence similarity in the carbohydrate-binding site. It is a homodimer with a subunit molecular mass of 14.5 kDa, which contains six cysteine residues per subunit. The cysteine residues should be in a free state to maintain a molecular structure that is capable of showing lectin activity. This endogenous lectin widely expressed at sites of inflammation and tumor growth has been postulated as an attractive immunosuppressive agent to restore immune cell tolerance and homeostasis in autoimmune and inflammatory settings. On the other hand, galectin-1 contributes to different steps of tumor progression including cell adhesion, migration, and tumor-immune escape, suggesting that blockade of galectin-1 might result in therapeutic benefits in cancer. Several potential glycoprotein ligands for galectin-1 have been identified, including lysosome-associated membrane glycoproteins and fibronectin, laminin, as well as T-cell glycoproteins CD43 and CD45. Evidence points to Gal-1 and its ligands as one of the master regulators of such immune responses as T-cell homeostasis and survival, T-cell immune disorders, inflammation, and allergies as well as host-pathogen interactions.
Biological Activity :
1.Measured by its ability to agglutinate human red blood cells. The ED50 for this effect is typically 3-30μg/mL.2.Loaded Recombinant Human Thy1/CD90 Protein, His Tag(Cat. No. 16897-H08H) on NTA Biosensor, can bind Recombinant Human Galectin-1 Protein (Cat. No. 10290-HNAE) with an affinity constant of 46.9 nM as determined in BLI assay (Sartorius Octet RED384) (Routinely tested).
Expression Host :
Human
Source :
E. coli
Tag :
Protein Accession No. :
NP_002296.1
NCBI Gene ID :
Synonyms :
Synonyms :
lectin, galactoside-binding, soluble, 1
Amino Acid Sequence :
Molecular Weight :
The recombinant human Galectin 1 comprises 134 amino acids without the initiator methonine, and predicts a molecular mass of 15 kDa as estimated in SDS-PAGE under reducing conditions.
Purity :
> 98 % as determined by SDS-PAGE
State of Matter :
Product Concentration :
Storage and Stability :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Endotoxin Level :
Please contact us for more information.
Protein Construction :
A DNA sequence encoding the human Galectin 1 (NP_002296.1) (Met 1-Asp135) was expressed.
Buffer Solution :
Lyophilized from sterile PBS, pH 7.4.Please contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hardcopy of datasheet.
Shipping :
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Redissolution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Synonyms :
GAL1 Protein, Human; Galectin-1 Protein, Human; GBP Protein, Human Galectin-1/LGALS1 背景信息 Galectin-1 (Gal-1, GAL1), is a member of the galectins, a family of animal lectins ranging from Caenorhabditis elegans to humans, which is defined by their affinity for beta-galactosides and by significant sequence similarity in the carbohydrate-binding site. It is a homodimer with a subunit molecular mass of 14.5 kDa, which contains six cysteine residues per subunit. The cysteine residues should be in a free state to maintain a molecular structure that is capable of showing lectin activity. This endogenous lectin widely expressed at sites of inflammation and tumor growth has been postulated as an attractive immunosuppressive agent to restore immune cell tolerance and homeostasis in autoimmune and inflammatory settings. On the other hand, galectin-1 contributes to different steps of tumor progression including cell adhesion, migration, and tumor-immune escape, suggesting that blockade of galectin-1 might result in therapeutic benefits in cancer. Several potential glycoprotein ligands for galectin-1 have been identified, including lysosome-associated membrane glycoproteins and fibronectin, laminin, as well as T-cell glycoproteins CD43 and CD45. Evidence points to Gal-1 and its ligands as one of the master regulators of such immune responses as T-cell homeostasis and survival, T-cell immune disorders, inflammation, and allergies as well as host-pathogen interactions.
References & Citations :
Gaudet AD, et al. (2005) Expression and functions of galectin-1 in sensory and motoneurons. Curr Drug Targets. 6(4): 419-25.Kadoya T, et al. (2006) Structural and functional studies of galectin-1: a novel axonal regeneration-promoting activity for oxidized galectin-1. Curr Drug Targets. 6(4): 375-83.Camby I, et al. (2006) Galectin-1: a small protein with major functions. Glycobiology. 16(11): 137R-157R.Salatino M, et al. (2008) Galectin-1 as a potential therapeutic target in autoimmune disorders and cancer. Expert Opin Biol Ther. 8(1): 45-57.
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