APN-PEG4-DBCO

APN-PEG4-DBCO (or DBCO-PEG4-APN) is a powerful reagent for cysteine-specific conjugation. The APN group directly targets thiol groups on cysteine, making it perfect for precise protein modifications. This reagent combines three key components:

• APN Group: Specifically reacts with cysteine’s thiol groups, creating stable bonds. Ideal for targeted labeling of proteins and peptides.
• DBCO: Allows for fast, copper-free click chemistry with azides. No copper means it’s safe for live-cell and in vivo work.
• PEG4 Spacer: Adds flexibility and boosts solubility. It reduces steric hindrance and improves biocompatibility.

Applications:

1. Protein and Peptide Labeling: Easily tag proteins and peptides by binding to cysteine residues. Great for fluorescent labeling or drug conjugation.
2. Drug Delivery: The PEG4 spacer helps improve solubility and stability, making drug delivery more efficient.
3. Surface Modification: Modify nanoparticles or other surfaces by targeting cysteine residues with high specificity.

Key Benefits:

• High Specificity: Targets cysteine, ensuring precise modifications with less off-target binding.
• Copper-Free: The DBCO group enables a quick and safe reaction with azides without toxic copper, perfect for sensitive environments.
• Enhanced Solubility: The PEG4 chain helps reduce aggregation and improves the performance of conjugates in biological systems.

Handling:

• Store at -20°C in a dry environment.
• Handle with standard safety measures for reactive reagents.

APN-PEG4-DBCO offers a versatile and efficient solution for cysteine-specific conjugation, making it an essential tool in biotechnology, drug development, and molecular biology.