Human Tumstatin Antibody

Catalog #: MAB7546 Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
MAB7546
MAB7546-SP

Detection of Human Tumstatin by Western Blot.

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Human Tumstatin Antibody Summary

Species Reactivity

Human

Specificity

Detects human Tumstatin in direct ELISAs. In direct ELISAs, less than 25% cross-reactivity with recombinant human Collagen IV alpha 1 is observed.

Source

Monoclonal Mouse IgG₁ Clone # 762102

Purification

Protein A or G purified from hybridoma culture supernatant

Immunogen

E. coli-derived recombinant human Tumstatin

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.

Applications

Recommended Concentration

Sample

Western Blot

2 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 Tumstatin by Western Blot. Western blot shows lysates of human skeletal muscle tissue. PVDF membrane was probed with 2 µg/mL of Mouse Anti-Human Tumstatin Monoclonal Antibody (Catalog # MAB7546) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for Tumstatin at approximately 26 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Reconstitution Calculator

Preparation and Storage

Reconstitution

Sterile PBS to a final concentration of 0.5 mg/mL.

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: Tumstatin

Tumstatin is a naturally occurring, anti-angiogenic, anti-tumor peptide of 28 kDa that constitutes the NC1 (non-collagenous) domain of the Collagen IV a3 chain [amino acids (aa) 1427-1670 of Coll IV a3;]. It is liberated from basement membranes by MMP-9, and interacts with Integrin aVb3 on endothelial cells, causing cell cycle arrest, or apoptosis of cells that are proliferating. Human Tumstatin is also active on mouse and bovine endothelial cells. Human Tumstatin shares 91% and 89% aa sequence identity with mouse and rat Tumstatin, respectively.

Entrez Gene IDs

1285 (Human); 12828 (Mouse)

Alternate Names

COL4A3; collagen alpha-3(IV) chain; collagen IV, alpha-3 polypeptide; collagen, type IV, alpha 3 (Goodpasture antigen); Goodpasture antigen; Tumstatin