|Detection of Mouse and Rat Gastrokine 1 by Western Blot. Western blot shows lysates of mouse stomach tissue and rat stomach tissue. PVDF membrane was probed with 1 µg/mL of Rat Anti-Mouse Gastrokine 1 Monoclonal Antibody (Catalog # MAB7287) followed by HRP-conjugated Anti-Rat IgG Secondary Antibody (Catalog # HAF005). A specific band was detected for Gastrokine 1 at approximately 17 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.|
|Gastrokine 1 in Mouse Intestine. Gastrokine 1 was detected in perfusion fixed frozen sections of mouse intestine using Rat Anti-Mouse Gastrokine 1 Monoclonal Antibody (Catalog # MAB7287) at 25 µg/mL overnight at 4 °C. Tissue was stained using the NorthernLights™ 557-conjugated Anti-Rat IgG Secondary Antibody (red; Catalog # NL013) and counterstained with DAPI (blue). Specific staining was localized to gastric glands. View our protocol for Fluorescent IHC Staining of Frozen Tissue Sections.|
Gastrokine 1 (GKN1; also CA11 and AMP-18) is a 17-20 kDa member of the Gastrokine protein family. It has limited expression, being restricted to mucous secreting pyloric antrum epithelial cells. Gastrokine 1 appears to promote epithelial cell proliferation and migration, and induce the formation of tight junctions between epithelial cells. By contrast, gastrokine 1 induces Fas expression in tumor cells, resulting in apoptosis. Mature mouse gastrokine 1 is 166 amino acids (aa) in length (aa 36-201 of SwissProt accession Q9CR36 or aa 19-184 of accession NP_079742). Based on the SwissProt sequence, it possesses one BRICHOS domain (aa 71-165) that contains a mitogenic sequence (aa 113-131). There is one potential alternative start site at Met18. Over aa 38-201 (accession Q9CR36), mouse gastrokine 1 shares 65% and 92% aa sequence identity with human and rat gastrokine 1, respectively.