Biotin-Exendin-4 is an N-terminally biotinylated derivative of full-length Exendin-4. The construct combines the 39-residue GLP-1R-binding scaffold with a biotin affinity tag for streptavidin-based capture, immobilization and detection.

This format is useful when receptor recognition needs to be integrated with biochemical or imaging-oriented assay architecture.

Product Information

Affinity Capture and Immobilization

Biotin provides high-affinity interaction with streptavidin and related avidin-family reagents. Potential applications include receptor-binding experiments, pull-down workflows and surface-immobilized ligand assays.

The orientation of the peptide on a streptavidin surface may differ from free ligand in solution, so immobilized and soluble binding measurements should not be treated as equivalent kinetic systems.

Effect of N-Terminal Labeling

The Exendin-4 N-terminus contributes directly to GLP-1R activation. N-terminal biotinylation therefore adds analytical functionality at a pharmacologically important region of the molecule.

We recommend experimentally comparing the labeled construct with unlabeled Exendin-4 whenever receptor potency or activation kinetics are quantitative endpoints.

Quality Considerations

Correct conjugation and molecular identity should be confirmed in addition to HPLC purity. Our Peptide Quality Control capabilities support analytical HPLC and mass spectrometry.

Frequently Asked Questions

Where is the biotin group attached?

The listed construct is N-terminally biotinylated.

Should Biotin-Exendin-4 be assumed to have identical potency to unmodified Exendin-4?

No. The N-terminus is involved in receptor activation, so quantitative activity should be validated experimentally.

Research Use Only.