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Proteomics method for identification of pseudopodium phosphotyrosine proteins
Yingchun Wang1, Richard L Klemke
1Key Laboratory of Molecular Development Biology, Insitute of Genetics and Development Bilogy, Chinese Academy of Sciences, Beijing, China.
Methods in Molecular Biology (Clifton, N.J.)
|September 13, 2011
Summary
Researchers developed a method to purify phosphotyrosine proteins (pY) from cell pseudopodia. This technique enables large-scale identification of the pY proteome in migratory cells, aiding cancer metastasis research.
Area of Science:
- Cell Biology
- Proteomics
- Biochemistry
Background:
- Cell migration is crucial for physiological and pathological processes.
- It involves actin/myosin-mediated membrane protrusion and attachment.
- Signaling networks downstream of integrin receptors regulate cell movement direction.
Purpose of the Study:
- To describe methods for immunoaffinity purification of phosphotyrosine proteins (pY) from isolated cell pseudopodia.
- To enable large-scale identification of the pseudopodium pY proteome.
- To investigate regulatory networks in migratory cells.
Main Methods:
- Isolation of pseudopodia from migratory cells.
- Immunoaffinity purification of phosphotyrosine proteins (pY).
- Compatibility with mass spectrometry-based protein identification.
Main Results:
- Successful purification of pY proteins from pseudopodia.
- Methods are suitable for various migratory cell lines, including primary and cancer cells.
- Enables large-scale identification of the pseudopodium pY proteome.
Conclusions:
- Developed a robust method for pseudopodium pY proteome analysis.
- This technique facilitates understanding of cell migration regulation.
- Potential applications in studying wound healing, immune function, and cancer metastasis.
