OS9 Overexpression Lysate

HEK293T cells in 10-cm dishes were transiently transfected with a non-lipid polymer transfection reagent specially designed and manufactured for large volume DNA transfection. Transfected cells were cultured for 48hrs before collection. The cells were lysed in modified RIPA buffer (25mM Tris-HCl pH7.6, 150mM NaCl, 1% NP-40, 1mM EDTA, 1xProteinase inhibitor cocktail mix, 1mM PMSF and 1mM Na3VO4, and then centrifuged to clarify the lysate. Protein concentration was measured by BCA protein assay kit.

OS9 is a lectin which functions in endoplasmic reticulum quality control and ER-associated degradation. This ER glycoprotein is found in the intralumenal level and highly expressed in tumor tissue. The OS9 gene is transcriptionally induced upon activation of the Ire1/Xbp1 ER-stress pathway.

Functionally, OS9 binds to HIF-1, a key regulator of the hypoxic response and angiogenesis, and promotes the degradation of one of its subunits. It may also bind terminally misfolded non-glycosylated proteins as well as improperly folded glycoproteins, retain them in the ER, and possibly transfer them to the ubiquitination machinery and promote their degradation. One such possible target includes TRPV4.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Lysates are guaranteed for 6 months from date of receipt.

Array NBP2-08681

• OS9 Antibodies
• OS9 Lysates
• OS9 Proteins