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Measurement of Wee kinase activity.
Paul R Mueller1, Walter F Leise
1Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL, USA.
Methods in Molecular Biology (Clifton, N.J.)
|December 4, 2004
Summary
Wee kinases regulate cell division by inhibiting Cdc2 activity. This chapter details methods to measure Wee kinase activity, crucial for understanding cell cycle control and development.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- The Wee kinases (Wee1, Wee2, Myt1) are critical regulators of mitotic entry.
- They inhibit cell division by phosphorylating Cdc2 and related cyclin-dependent kinases (Cdks).
- Wee kinase activity and abundance are tightly regulated throughout the cell cycle and development.
Purpose of the Study:
- To describe experimental procedures for measuring Wee kinase activity.
- To provide protocols for assessing kinase activity in various biological preparations.
- To facilitate research on cell cycle regulation and developmental processes.
Main Methods:
- Production and purification of recombinant Cdc2/Cyclin B substrate.
- Preparation of crude subcellular extracts.
- Purification of endogenous or recombinant Wee kinases.
- Wee kinase activity assays.
- Histone H1 kinase assay for Cdc2 activity measurement.
- Use of Ni-IDA beads for histidine-tagged protein purification.
- Baculovirus expression system for recombinant protein production.
Main Results:
- Established protocols for measuring Wee kinase activity in crude and purified samples.
- Demonstrated methods for substrate and kinase preparation.
- Provided supporting protocols for protein purification techniques.
Conclusions:
- The described methods enable robust measurement of Wee kinase activity.
- These protocols are essential for studying the role of Wee kinases in cell cycle control.
- The chapter offers a comprehensive guide for researchers investigating mitotic regulation.