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Modular peptide recognition domains in eukaryotic signaling
1Howard Hughes Medical Institute, Rockefeller University, New York, NY 10021, USA.
Annual Review of Biophysics and Biomolecular Structure
|January 1, 1997
Summary
Eukaryotic signal transduction separates catalysis from target recognition using modular domains. Structural studies reveal specificities of SH2, SH3, and PTB domains, and their cooperative interactions.
Area of Science:
- Molecular Biology
- Cellular Biology
- Biochemistry
Background:
- Eukaryotic cellular signal transduction pathways feature a division between catalytic activity and target recognition.
- Modular domains are crucial for identifying short peptide sequences and directing signaling proteins.
Purpose of the Study:
- To review the structural basis of recognition specificities for SH2, SH3, and PTB domains.
- To discuss the mechanism of cooperative interactions among these domains.
Main Methods:
- X-ray crystallography
- Nuclear Magnetic Resonance (NMR) spectroscopy
Main Results:
- Elucidation of the structural underpinnings for SH2, SH3, and PTB domain recognition specificities.
- Insights into the cooperative mechanisms governing interactions between these signaling domains.
Conclusions:
- Modular domains play a key role in eukaryotic signal transduction specificity.
- Understanding these domain interactions is vital for deciphering complex cellular signaling networks.