Release date: 2009-02-27
 

AnaSpec Introduces Newest GO™ Peptides - Exendins
 

(Newswire Today) —  San Jose, CA, United States, 2009-02-27 - Along with a host of popular Exendin peptides, AnaSpec’s GO™ Peptides line includes Fluorescein-Trp25-Exendin-4 (FLEX) and [Cys(HiLyteFluor 647 C2 maleimide)]-Exendin-4 - two exendin peptides that are not immediately available anywhere else.

   
 

AnaSpec has added a wide selection of Exendin peptides to it’s GO™ Peptides line of on-demand peptides. Along with a host of popular Exendin peptides, AnaSpec’s GO™ Peptides line includes Fluorescein-Trp25-Exendin-4 (FLEX) and [Cys(HiLyteFluor 647 C2 maleimide)]-Exendin-4 - two exendin peptides that are not immediately available anywhere else.

Fluorescein-Trp25-Exendin-4 (FLEX) is Exendin-4 with a fluorescein covalently attached to Trp at position 25. Useful for binding and characterization studies of the human GLP-1 receptor, FLEX is equipotent to GLP-1 (7-36)-amide and Exendin-4 as an inhibitor of [125I]-GLP-1 binding to the human GLP-1 receptor stably expressed in CHO cells.1 [Cys(HiLyte Fluor™ 647 C2 maleimide)]-Exendin -4 is Exendin-4 with an additional Cys added to the N-terminus. AnaSpec’s patented HiLyte Fluor 647 (Ex/Em=650 nm/675 nm) is attached to the Cys thiol moiety.

Exendin-3 and Exendin-4 are 39-amino acid peptides from exocrine glands that share about 50% sequence identity to Glucagon-Like-Peptide-1 (GLP-1) and are potent GLP-1R agonists. 2,3 Exendin-3 stimulates increases in cellular cAMP and amylase release from dispersed guinea pig pancreatic acini.4 Exendin-4 was originally isolated from the saliva of the lizard Heloderma suspectum. It is an insulinotropic agent which improves glucose tolerance in humans and animals with diabetes. It increases insulin sensitivity via a PI-3-kinase-dependent mechanism. In the human fetal pancreas, the proliferation and differentiation of endocrine precursor cells into insulin-producing ß-cells can be positively regulated by Exendin-4.5 Exendin-4 is an agonist and Exendin (9-39) is an antagonist of the action of GLP-I (7-36) amide on arterial blood pressure and heart rate.6

About AnaSpec

AnaSpec (anaspec.com) is a leading provider of integrated proteomics solutions to the world’s largest biotech, pharmaceutical, and academic research institutions. With a vision for innovation through synergy, AnaSpec focuses on three core technologies: peptides, detection reagents, and combinatorial chemistry.

References:
1. Chicchi GG. et al. Peptides 18, 319 (1997).
2. Goke, R. et al. J. Biol. Chem. 268, 19650 (1993).
3. Thorens, B. et al. Diabetes 42, 1678 (1993).
4. Eng, J. J. Biol. Chem. 265, 20259 (1990).
5. Movassat, J. et al. J. Clin. Endo. Metab. 87, 4775 (2002).
6. Barragan, JM. Regul. Peptides 67, 63 (1994).

   
 

Agency / Source:

 
 
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  Related Link:
 Contact name: Ping Yang
  Related Link:
 408-452-5055 / ping[.]anaspec.com
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