Principle of the Assay: This kit uses Sandwich-CLIA as the method. The micro CLIA plate provided in this kit has been pre-coated with an antibody specific to CPE. Standards or samples are added to the appropriate micro CLIA plate wells and combined with the specific antibody. Then a biotinylated detection antibody specific for CPE and Avidin-Horseradish Peroxidase (HRP) conjugate is added to each micro plate well successively and incubated. Free components are washed away. The substrate solution is added to each well. Only those wells that contain CPE, biotinylated detection antibody and Avidin-HRP conjugate will appear fluorescence. The Relative light unit (RLU) value is measured spectrophotometrically by the Chemiluminescence immunoassay analyzer. The RLU value is positively associated with the concentration of CPE. You can calculate the concentration of CPE in the samples by comparing the RLU value of the samples to the standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a carboxypeptidase that cleaves C-terminal amino acid residues and is involved in the biosynthesis of peptide hormones and neurotransmitters, including insulin. It is a peripheral membrane protein. The protein specifically binds regulated secretory pathway proteins, including prohormones, but not constitutively secreted proteins. Mutations in this gene are implicated in type II diabetes. [provided by RefSeq, Jul 2008]
Uniprot Description
CPE: Removes residual C-terminal Arg or Lys remaining after initial endoprotease cleavage during prohormone processing. Processes proinsulin. Belongs to the peptidase M14 family. 2 isoforms of the human protein are produced by alternative splicing.
Protein type: Secreted; Protease; Secreted, signal peptide; EC 3.4.17.10
Chromosomal Location of Human Ortholog: 4q32.3
Cellular Component: Golgi apparatus; secretory granule membrane; plasma membrane; nucleus
Molecular Function: zinc ion binding; carboxypeptidase activity; neurexin binding; cell adhesion molecule binding; metallocarboxypeptidase activity
Biological Process: insulin processing; Wnt receptor signaling pathway; cellular protein metabolic process; neuropeptide signaling pathway; metabolic process; protein modification process