Description
The U8-424 monoclonal antibody specifically binds to human, mouse, and rat C-Peptide, the connecting peptide that links the A- and B-chains in the proinsulin molecule. The A- and B- chains and C-Peptide are encoded by the transcript of the INS gene and are produced by the β cells in the islets of Langerhans of the pancreas. As the biosynthesis of insulin proceeds, the C-Peptide is cleaved from proinsulin to form the mature insulin hormone, which is composed of the A- and B-chains linked by 2 disulfide bonds. Mature insulin and C-Peptide are stored in granules in the β cells and are released to the blood in response to metabolic signals such as glucose, the amino acids arginine and leucine, and acetylcholine. As a result, C-Peptide is released into the blood stream in an equimolar amount to insulin; the serum level of C-Peptide correlates with pancreatic β cell function and the amount of insulin being produced. The expression of C-Peptide can be used to monitor the pancreatic differentiation of pluripotent stem cells. Insulin is an evolutionarily conserved peptide hormone that binds to receptors on target cells (primarily adipose and muscle) to promote the absorption of glucose from the blood, thus regulating fat and carbohydrate metabolism. C-Peptide itself binds to many cell types, independently of the insulin receptor, and initiates several intracellular signaling cascades.
Format
- Format
Alexa Fluor® 647
- Excitation Source
Red 633 nm
- Excitation Max
650 nm
- Emission Max
668 nm
Alexa Fluor® 647 conjugates are highly photostable and remain fluorescent over a broad pH range. The excitation and emission maxima are nearly identical to those of APC. However, APC tends to be brighter while Alexa Fluor® 647 is more optimal for intracellular applications. This fluorochrome exhibits uncommon photostability, making it an ideal choice for use in fluorescence microscopy. Due to nearly identical excitation and emission properties but different spillover characteristics, APC and Alexa Fluor® 647 cannot be used simultaneously.
Suggested Companion Products
Preparation and Storage
Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.
The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography.
The antibody was conjugated to Alexa Fluor® 647 under optimum conditions, and unreacted Alexa Fluor® 647 was removed.
Product Notices
- Please refer to www.bdbiosciences.com/pharmingen/protocols for technical protocols.
- The Alexa Fluor®, Pacific Blue™, and Cascade Blue® dye antibody conjugates in this product are sold under license from Molecular Probes, Inc. for research use only, excluding use in combination with microarrays, or as analyte specific reagents. The Alexa Fluor® dyes (except for Alexa Fluor® 430), Pacific Blue™ dye, and Cascade Blue® dye are covered by pending and issued patents.
- Alexa Fluor® is a registered trademark of Molecular Probes, Inc., Eugene, OR.
- Alexa Fluor® 647 fluorochrome emission is collected at the same instrument settings as for allophycocyanin (APC).
- Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
- For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences.com/colors.
- Since applications vary, each investigator should titrate the reagent to obtain optimal results.
- An isotype control should be used at the same concentration as the antibody of interest.
