40nm NHS-Activated Gold Nanoparticle Conjugation Kit media thumbnails
40nm NHS-Activated Gold Nanoparticle Conjugation Kit-1
40nm NHS-Activated Gold Nanoparticle Conjugation Kit-2
40nm NHS-Activated Gold Nanoparticle Conjugation Kit-3

40nm NHS-Activated Gold Nanoparticle Conjugation Kit

SKU: CGN5K-40-1

$180.00

Size: 3 vials

CytoGroup 40nm NHS-activated Gold Nanoparticle Conjugation Kit have been optimized for high efficiency one-step covalent conjugation of proteins and other primary amine-containing ligands to gold nanoparticles.

The kit contains ready-to-use pre-made mixtures. No activation or manipulation of the gold nanoparticles is required prior to conjugation, which often results in poor performing conjugates. Simply mix your protein with the pre-activated NHS ester gold nanoparticles supplied in the kit. 

This mini kit contains individual reaction vials with lyophilized NHS-activated gold nanoparticles for performing three independent conjugation reactions.

Kit Components

  • 40nm NHS-Activated Gold Nanoparticles (lyophilized)
  • Protein Resuspension Buffer - 1.5ml
  • Reaction Buffer - 1.5ml
  • Quencher Solution - 1.5ml

Features & Benefits

  • Results in covalently bound ligand and more stable conjugate.
  • Fast and convenient one-step conjugation reaction with no pre-activation requirements.
  • Spacer between the gold nanoparticle surface and conjugated ligand minimizes effects on the tertiary protein structure, which can lead to poor performing conjugates, a common problem seen in conjugates prepared by passive adsorption.
  • Precisely engineering surface coating that reduces non-specific protein binding in biological assays.

Gold Nanoparticle Specifications

Surface functionality: NHS-ester (~ 1 NHS group/nm2) (10kDa PEG-spacer between gold surface and NHS-group)

Core diameter: 40nm 

Concentration: OD=20 (when dissolved to a final volume of 100ul)

Particles per ml: ~1.4E+12 (when dissolved to a final volume of 100ul)

Absorbance (lambda max): 530nm

40nm gold nanoparticles UV-VIS spectrum

Diameter  Peak SPR Wavelength (nm) NPS/ml* Wt. Conc. (mg/ml)* Molar Ext. (M-1cm-1) Size Dispersity (+/-nm) Particle Volume (nm3) Surface Area (nm2) Surface/Volume Ratio Particle Mass (g) Molar Mass (g/mol) Molar Concentration*
40 530 7.15E+10 4.65E-02 8.42E+09 <12% 3.35E+04 5.03E+03 0.15 6.50E-16 3.91E+08 1.19E-10

* All concentrations as indicated at an optical density of 1 (OD=1, i.e. absorbance at peak SPR wavelength with a 1cm pathlength)