One-step analysis of protein complexes in microliters of cell lysate.
basic_science · Level V
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Abstract
We present 'mix and measure' procedures for the analysis of protein complexes in microliters of crude human and mouse cell lysates using fluorescence correlation and crosscorrelation spectroscopy. We labeled interacting endogenous proteins by indirect immunofluorescence with all primary and secondary reagents added in one step. Especially for the screening of compounds interfering with interactions that depend on signaling-induced posttranslational modifications, the approach represents a major advance over existing protocols.
Medical subject headings
- Cell Extracts
- Fluorescent Antibody Technique, Indirect
- Multiprotein Complexes
- Spectrum Analysis