Structural Proteomics Methods to Interrogate the Conformations and Dynamics of Intrinsically Disordered Proteins

Area of Science:

• Biochemistry
• Structural Biology
• Proteomics

Background:

• Intrinsically disordered proteins (IDPs) and regions (IDRs) are abundant and vital for biological processes.
• IDPs are frequently implicated in diseases such as neurodegeneration and cancer.
• The inherent flexibility of IDPs presents unique challenges for structural characterization compared to folded proteins.

Purpose of the Study:

• To highlight the advantages of structural mass spectrometry (MS) methods for studying IDPs and IDRs.
• To showcase recent applications of MS techniques in elucidating IDP structure and function.
• To emphasize the utility of MS in overcoming limitations of conventional methods for IDP analysis.

Main Methods:

• Native MS
• Ion mobility MS
• Top-down MS
• Hydrogen-deuterium exchange MS
• Crosslinking MS
• Covalent labeling

Main Results:

• Structural MS methods provide powerful tools for characterizing the heterogeneous ensembles of IDPs.
• Advances in instrumentation and workflows enhance the study of IDP structure and function.
• Recent applications demonstrate MS's ability to provide insights not achievable by other techniques.

Conclusions:

• Structural mass spectrometry is indispensable for understanding the complex nature of intrinsically disordered proteins.
• These advanced MS techniques are crucial for uncovering the roles of IDPs in health and disease.
• The described MS approaches offer novel avenues for future research into IDP biology.