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Updated: Aug 19, 2026

Monitoring Kinase and Phosphatase Activities Through the Cell Cycle by Ratiometric FRET
Published on: January 27, 2012
Visualization of protein kinase activities in single cells by antibodies against phosphorylated vimentin and GFAP
N Inagaki1, K Tsujimura, J Tanaka
1Department of Biochemistry, Aichi Open Center Research Institute, Japan.
Abstract:
Vimentin and glial fibrillary acidic protein (GFAP) are intermediate filament proteins expressed in the cytoplasm of various types of cells. The head domains of these proteins are phosphorylated by various protein kinases. Site- and phosphorylation-specific antibodies which recognize a phosphorylated serine/threonine residue in the head domains and its flanking sequence provide a useful tool to monitor and visualize protein kinase activities in single cells.
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