SPARC Antibody / Osteonectin

• Catalog Number: orb1823280
• Category: Antibodies
• Description: SPARC (for secreted protein acidic and rich in cysteine) is a phosphorylated, acidic, glycine-rich glycoprotein that is secreted by endothelial cells and is present in large amounts in the parietal endoderm of mouse embryos and in human placenta. It is identical to osteonectin, a protein important to bone calcification that is highly conserved between species. SPARC, which can be selectively expressed by the endothelium in response to certain types of injury, induces rounding in adherent endothelial cells in vitro. It regulates endothelial barrier function through F-Actin-dependent changes in cell shape, coincident with the appearance of intercellular gaps, which provide a paracellular pathway for extravasation of macromolecules.
• Species/Host: Rabbit
• Clonality: Recombinant
• Clone Number: OSTN/8528R
• Tested applications: IHC-P
• Reactivity: Human
• Isotype: Rabbit IgG, kappa
• Immunogen: A recombinant partial protein sequence (within amino acids 1-200) from the human protein was used as the immunogen for the SPARC antibody.
• Dilution range: Immunohistochemistry (FFPE): 1-2ug/ml for 30 min at RT
• Conjugation: Unconjugated
• Formula: 0.2 mg/ml in 1X PBS with 0.1 mg/ml BSA (US sourced), 0.05% sodium azide
• Hazard Information: This SPARC antibody is available for research use only.
• UniProt ID: P09486
• Storage: Aliquot the SPARC antibody and store frozen at -20°C or colder. Avoid repeated freeze-thaw cycles.
• Note: For research use only
• Expiration Date: 12 months from date of receipt.

IHC staining of FFPE human tonsil tissue with SPARC antibody (clone OSTN/8528R). Inset: PBS used in place of primary Ab (secondary Ab negative control). HIER: boil tissue sections in pH 9 10mM Tris with 1mM EDTA for 20 min and allow to cool before testing.

SDS-PAGE analysis of purified, BSA-free SPARC antibody (clone OSTN/8528R) as confirmation of integrity and purity.