Structure determination using solution NMR: Is it worth the effort?

Area of Science:

• Structural Biology
• Biophysics
• Biochemistry

Background:

• Solution Nuclear Magnetic Resonance (NMR) spectroscopy has been a cornerstone for high-resolution protein structure determination for nearly four decades.
• NMR-derived structures have fundamentally advanced our understanding of biomolecular function.
• The advent of X-ray crystallography and cryo-electron microscopy (cryo-EM) has prompted reevaluation of NMR's role in structural biology.

Purpose of the Study:

• To provide a historical overview of NMR-based structure determination over the past 40 years.
• To assess the current landscape and capabilities of NMR in structural biology.
• To identify future challenges and opportunities for NMR as a structural technique.

Main Methods:

• Review of methodological and instrumental advancements in NMR spectroscopy for structure determination.
• Analysis of NMR's unique contributions, particularly in capturing protein dynamics.
• Comparison of NMR with complementary structural biology techniques like X-ray crystallography and cryo-EM.

Main Results:

• NMR has consistently evolved, expanding its applicability and pushing the boundaries of structural analysis.
• NMR offers unique insights into protein dynamics, a crucial aspect often missed by static structural methods.
• Current limitations, primarily size constraints for routinely studied biomolecular systems, remain an area for development.

Conclusions:

• NMR spectroscopy remains a vital technique in structural biology, complementing other methods.
• Continued development of methodology and instrumentation is essential for NMR to overcome current limitations.
• NMR's future potential lies in its ability to integrate structural and dynamic information for a comprehensive understanding of biomolecular mechanisms.