|Detection of Human TEM8 Isoform 1 by Western Blot. Western blot shows lysates of HepG2 human hepatocellular carcinoma cell line. PVDF membrane was probed with 1 µg/mL of Goat Anti-Human TEM8 Isoform 1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3886) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). Specific bands were detected for TEM8 at approximately 55 and 45 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.|
|TEM8 in HT-29 Human Cell Line. TEM8 was detected in immersion fixed HT‑29 human colon adenocarcinoma cell line using Goat Anti-Human TEM8 Isoform 1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF3886) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (yellow; Catalog # NL001) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Cells on Coverslips.|
TEM8, also called ATR1, is a glycoprotein of the anthrax toxin receptor family that is expressed by endothelial cells. Type I transmembrane isoforms of 564 aa (80‑85 kDa) and 368 aa (60 kDa) and potentially secreted isoforms of 330 aa and 297 aa (45 kDa) are differentially expressed. All diverge at the C-terminal end but share the N-terminal vWFA domain that binds the anthrax toxin PA subunit as well as collagens I and IV. Human TEM8 shares 99% aa identity with mouse and rat and 92% identity with canine and chick TEM8 within the extracellular domain.
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