Dichlorotriazine-based multivalent probe for selective affinity labeling of carbohydrate-binding proteins

Area of Science:

• Nanotechnology
• Biochemistry
• Chemical Biology

Background:

• Affinity labeling is crucial for identifying protein interactions.
• Developing selective and sensitive probes remains a challenge in chemical biology.

Purpose of the Study:

• To synthesize and evaluate multivalent gold nanoparticle probes with various electrophilic groups.
• To identify a suitable protein-reactive label for selective protein capture.

Main Methods:

• Synthesis of gold nanoparticle probes functionalized with different electrophilic groups.
• Evaluation of the affinity labeling reactivity of the synthesized probes.
• Assessment of probe selectivity and sensitivity using nanomolar concentrations.

Main Results:

• A series of multivalent gold nanoparticle probes were successfully synthesized.
• The dichlorotriazine group demonstrated significant protein-reactive labeling capabilities.
• Selective capture of a target protein was achieved at nanomolar probe concentrations.

Conclusions:

• Multivalent gold nanoparticle probes offer a promising platform for affinity labeling.
• The dichlorotriazine moiety is a highly effective protein-reactive label.
• These probes enable sensitive and selective target protein identification.