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Recombinant Human Galectin-7 Protein

Catalog # 1339-GA | R&D Systems, Inc. a Bio-Techne Brand
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Carrier Free
1339-GA-050/CF

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With Carrier
1339-GA-050

Key Product Details

Source

E. coli

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

E. coli-derived human Galectin-7 protein
Ser2-Phe136

Purity

>97%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ser2

Predicted Molecular Mass

15 kDa

Activity

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 0.75-3 µg/mL.

Formulation, Preparation and Storage

Carrier Free
What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 1339-GA
Formulation Lyophilized from a 0.2 μm filtered solution in MOPS, NaCl, EDTA, DTT and Trehalose with BSA as a carrier protein.
Reconstitution Reconstitute at 200 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
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.
  • 3 months, 2 to 8 °C under sterile conditions after reconstitution.
Carrier Free: 1339-GA/CF
Formulation Lyophilized from a 0.2 μm filtered solution in MOPS, NaCl, EDTA, DTT and Trehalose.
Reconstitution Reconstitute at 200 μg/mL in sterile PBS.
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
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.
  • 3 months, 2 to 8 °C under sterile conditions after reconstitution.

Background: Galectin-7

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).

Human Galectin-7 is a prototype monomeric galectin. It is specifically expressed in stratified epithelia, notably in epidermis, but is barely detectable in epidermal tumors and significantly down-regulated or absent from squamous carconima cell lines. The Galectin-7 gene is induced by tumor suppressor protein p53 transcriptional activity following genotoxic events. A pro-apoptotic protein, Galectin-7 functions intracellularly upstream of JNK activation and cytochrome-c release. This protein has been shown to increase the susceptibility of keratinocytes to UVB induced apoptosis, an essential processss in the maintenance of epidermal homeostasis. Cell lines transfected with the Galectin-7 gene localized the protein in the nucleus and intracellularly. Human and mouse Galectin-7 share 79% amino acid homology (4-6).

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. (2002) Biochimie 83:667.
  4. R&D Systems Cytokine Bulletin, Summer (2002).
  5. Bernerd, F. et al. (1999) Proc. Natl. Acad. Sci. USA 96:11329.
  6. Kuwabara, I. et al. (2002) J. Biol. Chem. 277:3487.

Alternate Names

GAL7, Galectin7, LGALS7

Entrez Gene IDs

3963 (Human); 16858 (Mouse)

Gene Symbol

LGALS7

UniProt

Product Documents for Recombinant Human Galectin-7 Protein

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human Galectin-7 Protein

For research use only

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