Simple, rapid and label-free colorimetric assay for Zn2+ based on unmodified gold nanoparticles and specific Zn2+ binding peptide

Chem Commun (Camb). 2011 Apr 21;47(15):4412-4. doi: 10.1039/c0cc05727d. Epub 2011 Mar 10.

Abstract

A simple strategy based on unmodified AuNPs and specific Zn(2+) binding peptide is exploited here as a new label-free mechanism for the rapid colorimetric Zn(2+) assay.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Carrier Proteins / chemistry*
  • Color
  • Colorimetry / methods*
  • Gold / chemistry*
  • Metal Nanoparticles / chemistry*
  • Peptides / chemistry*
  • Substrate Specificity
  • Time Factors
  • Zinc / analysis*

Substances

  • Carrier Proteins
  • Peptides
  • zinc-binding protein
  • Gold
  • Zinc