Detection and Relative Quantification of Proteins by Surface Enhanced Raman Using Isotopic Labels
作者:Shirshendu K. Deb、Brandon Davis、Giselle M. Knudsen、Ravindra Gudihal、Dor Ben-Amotz、V. Jo Davisson
DOI:10.1021/ja800772p
日期:2008.7.1
Accurate quantification of protein content and composition has been achieved using isotope-edited surface enhanced resonance Raman spectroscopy. Synthesis of isotopomeric Rhodamine dye-linked bioconjugation reagents enabled direct labeling of surface lysines on a variety of proteins. When separated in polyacrylamide gels and stained with silver nanoparticles. The spectral signatures reflect the expected statistical distribution of isotopomeric labels on the labeled proteins in the gel matrix format without interference from protein features.