Human Galectin-7 Antibody

Catalog #: MAB13391 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB13391-100
MAB13391-SP

Detection of Human Galectin‑7 by Western Blot.

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All Galectin-7 Antibodies

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Summary Data Examples Preparation and Storage Reconstitution Calculator Background Product Datasheets Related Research Areas

Human Galectin-7 Antibody Summary

Species Reactivity

Human

Specificity

Detects human Galectin-7 in direct ELISAs and Western blots.

Source

Monoclonal Mouse IgG_2A Clone # 950756

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

E.coli-derived recombinant human Galectin-7
Ser26-Phe136
Accession # NP_002298

Formulation

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

Label

Unconjugated

Applications

Recommended Concentration

Sample

Western Blot

2 µg/mL

See below

Immunohistochemistry

5-25 µg/mL

See below

Immunocytochemistry

5-25 µg/mL

See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Western Blot

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Detection of Human Galectin‑7 by Western Blot. Western blot shows lysates of human skin tissue and human skin cancer tissue. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human Galectin-7 Monoclonal Antibody (Catalog # MAB13391) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF018). A specific band was detected for Galectin-7 at approximately 14 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Immunocytochemistry

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Galectin‑7 in HEK001 Human Cell Line. Galectin-7 was detected in immersion fixed HEK001 human skin kerotinocyte cell line using Mouse Anti-Human Galectin-7 Monoclonal Antibody (Catalog # MAB13391) at 5 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm and nuclei. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Immunohistochemistry

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Galectin‑7 in Human Cervical Cancer Tissue. Galectin-7 was detected in immersion fixed paraffin-embedded sections of human cervical cancer tissue using Mouse Anti-Human Galectin-7 Monoclonal Antibody (Catalog # MAB13391) at 5 µg/mL overnight at 4 °C. Tissue was stained using the Anti-Mouse HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS002) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm and nuclei. View our protocol for Chromogenic IHC Staining of Paraffin-embedded Tissue Sections.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store 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.
1 month, 2 to 8 °C under sterile conditions after reconstitution.
6 months, -20 to -70 °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

Rabinovich, A. et al. (2002) TRENDS in Immunol. 23:313.
Rabinovich, A. et al. (2002) J. Leukocyte Biology 71:741.
Hughes, R.C. (2002) Biochimie 83:667.
R&D Systems Cytokine Bulletin; Summer 2002.
Bernerd, F. et al. (1999) Proc. Natl. Acad. Sci. USA 96:11329.
Kuwabara, I. et al. (2002) J. Biol. Chem. 277:3487.

Entrez Gene IDs

3963 (Human); 16858 (Mouse)

Alternate Names

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