Secretin Receptor (SCTR)

SCTR is a 51-62kD member of the G-protein coupled receptor 2 family. It is found on alveolar epithelium, bile duct epithelium, pancreatic exocrine duct epithelium, and stomach plus duodenal mucosal epithelium. Mature human SCTR is a 418aa 7-transmembrane glycoprotein aa23-440. It contains a 121aa N-terminal extracellular region aa23-143 plus a 48aa C-terminal cytoplasmic domain aa393-440. There is at least one splice variant that shows a deletion of aa66-101. SCTR forms homodimers and homooligomers, and heterodimerizes with almost all family B GPCRs (VPAC1; VPAC2; GLP1R; GHRHR; etc.). Splice form of human Secretin Receptor with deletion of exons 3 and 4 was found expressed in pancreatic adenocarcinomas and cholangiocellular carcinomas, but not in gastrinomas or nonneoplastic pancreas or liver specimens.The deletion in this splice form is predicted to lead to a frame-shift, early truncation, and total absence of transmembrane segments in the receptor protein, whereas the leader sequence responsible for trafficking of the receptor to the cell membrane is preserved. This encoded a 111-residue peptide with its first 43 residues identical to wild-type receptor; but, subsequent to a shift in coding frame and early truncation, the next 68 residues were unique in the transcriptome/proteome. Our antibody was raised against this unique 68aa sequence resulting from putative frame-shift.\n\nApplications:\nSuitable for use in Western Blot. Other applications not tested.\n\nRecommended Dilution:\nWestern Blot: 1ug/ml\nOptimal dilutions to be determined by the researcher.\n\nStorage and Stability:\nLyophilized powder may be stored at -20 degrees C. Stable for 12 months at -20 degrees C. Reconstitute with PBS. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Reconstituted product is stable for 12 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.

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