Recombinant fragment (around aa1-200) of human SPARC protein (exact sequence is proprietary)
Alternative Names:
Basement membrane protein 40, BM40, Cysteine rich protein, OI17, ON, Osteonectin, Secreted acidic cystein rich glycoprotein, Secreted protein acidic and cysteine rich, Secreted protein acidic and rich in cysteine (SPARC)
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.
200ug/ml of Ab purified from Bioreactor Concentrate by Protein A/G. Prepared in 10mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0mg/ml.
Western blot analysis of A-375 cell lysate using SPARC / Osteonectin Mouse Monoclonal Antibody (OSTN/3761).
Analysis of Protein Array containing more than 19,000 full-length human proteins using Osteonectin Mouse Monoclonal Antibody (OSTN/3761). Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (MAb) (in combination with a fluorescently-tagged anti-IgG secondary antibody) produces when binding to a particular protein on the HuProtTM array. Z-scores are described in units of standard deviations (SDs) above the mean value of all signals generated on that array. If targets on HuProtTM are arranged in descending order of the Z-score, the S-score is the difference (also in units of SDs) between the Z-score. S-score therefore represents the relative target specificity of a MAb to its intended target. A MAb is considered to specific to its intended target, if the MAb has an S-score of at least 2.5. For example, if a MAb binds to protein X with a Z-score of 43 and to protein Y with a Z-score of 14, then the S-score for the binding of that MAb to protein X is equal to 29.
Formalin-fixed, paraffin-embedded human tonsil stained with Osteonectin / SPARC Mouse Monoclonal Antibody (OSTN/3761). Inset: PBS instead of primary antibody, secondary only negative control.
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