Recombinant Mouse Galectin-7 Protein

• Reactivity: Mu
• Applications: Bioactivity

Recombinant Mouse Galectin-7 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 1-6 µg/mL.
• Source: E. coli-derived mouse Galectin-7 protein
  Ser2-Phe136
• Accession #: Q99ML7
• N-terminal Sequence: Ser2
• Protein/Peptide Type: Recombinant Proteins
• Gene: Lgals7
• Purity: >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
• Endotoxin Note: <0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

• 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.

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, 2 to 8 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS and Betamercaptoethanol with BSA as a carrier protein.
• Purity: >97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
• Reconstitution Instructions: Reconstitute at 200 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.

Notes

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

Alternate Names for Recombinant Mouse Galectin-7 Protein

• GAL7
• Gal-7
• galectin 7
• Galectin7
• Galectin-7
• HKL-14
• lectin, galactoside-binding, soluble, 7
• LGALS7
• LGALS7A
• p53-induced gene 1 protein
• PI7
• PIG1
• TP53I1

Background

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).

Mouse Galectin-7 is a prototype monomeric galectin. It is expressed in stratified epithelia and is significantly down-regulated in squamous cell carcinomas. Galectin-7 is a pro-apoptotic protein that is highly induced by the tumor suppressor protein p53. It functions intracellularly upstream of JNK activation to enhance cytochrome c release during apoptosis (5). Galectin-7 may also be involved in cell-cell and cell-matrix interactions and exogenous galectin has been found to accelerate the re-epithelialization of wounds (6).

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. (2002) Biochimie 83:667.
4. R&D Systems' Cytokine Bulletin, Summer (2002).
5. Kuwabara, I. et al. (2002) J. Biol. Chem. 277:3487.
6. Cao, Z. et al. (2002) J. Biol. Chem. 277:42299.

Publications for Galectin-7 (1304-GA)(1)

Publication using 1304-GA

• Demers M, Magnaldo T, St-Pierre Y A novel function for galectin-7: promoting tumorigenesis by up-regulating MMP-9 gene expression. Cancer Res., 2005;65(12):5205-10. 2005 [PMID: 15958565] (Bioassay, Mouse)

Bioinformatics

• Gene Symbol: Lgals7
• Uniprot:
  • Q99ML7()