The structure of alpha-helical coiled coils

Area of Science:

• Protein structure and bioinformatics
• Structural biology
• Biochemistry

Background:

• Alpha-helical coiled coils are prevalent protein structural motifs.
• Their structural principles are exceptionally well-defined compared to other protein folds.
• These domains are crucial for a wide array of biological functions.

Purpose of the Study:

• To review the fundamental principles governing alpha-helical coiled-coil structure.
• To elucidate the key factors determining the folding and stability of these protein domains.
• To explore the diverse range of structural conformations adopted by coiled coils.

Main Methods:

• Review of existing literature on coiled-coil protein structures.
• Analysis of parametric equations used for predicting coiled-coil structures.
• Synthesis of data on folding determinants and stability factors.

Main Results:

• Coiled-coil structure is highly predictable and can be computationally derived from parametric equations.
• Specific amino acid sequences and interactions dictate folding pathways and stability.
• A variety of structural arrangements exist within the broader coiled-coil superfamily.

Conclusions:

• Alpha-helical coiled coils represent a fundamental and well-characterized protein fold.
• Understanding their structure-stability-function relationship is key to their biological versatility.
• This review consolidates current knowledge, providing a foundation for future research in protein engineering and drug design.