Protein folding by NMR.

Area of Science:

• Biochemistry
• Structural Biology
• Biophysics

Background:

• Protein folding is a complex process involving transient, partially folded states.
• Misfolded states can lead to diseases like neurodegeneration, diabetes, and cancer.
• Cellular factors like ribosomes and chaperones influence in vivo protein folding.

Purpose of the Study:

• To review solution Nuclear Magnetic Resonance (NMR) spectroscopy approaches for studying the protein folding energy landscape.
• To discuss applications of NMR in investigating protein folding in vitro and in vivo.
• To highlight NMR's potential for providing atomistic insights into protein folding mechanisms.

Main Methods:

• Solution NMR spectroscopy, including relaxation dispersion and saturation transfer techniques.
• Advanced isotope labeling and NMR methods for high molecular weight assemblies.
• In-cell NMR for studying protein folding within living cells.

Main Results:

• NMR enables detailed characterization of protein folding kinetics and thermodynamics.
• High-resolution structures of short-lived, weakly populated conformational states can be modeled.
• Recent advances allow studying protein folding in complex cellular environments, including ribosome-nascent chain complexes and molecular chaperones.

Conclusions:

• Solution NMR is a powerful tool for investigating the protein folding energy landscape.
• NMR provides atomistic insights into the molecular mechanisms of protein folding and homeostasis.
• Understanding protein folding via NMR is vital for comprehending health and disease states.