Modelling the assembly and flexibility of antibody structures

Area of Science:

• Structural Biology
• Immunology
• Computational Biology

Background:

• Antibodies are crucial protein assemblies for immune responses, recognizing antigens and interacting with other immune components.
• Historically, structural studies focused on antibody variable regions, but full-length antibody structure determination is a growing area.
• The conformational flexibility of antibodies presents significant challenges for structural modeling and evaluation.

Purpose of the Study:

• To review current knowledge on modeling full-length antibody structures.
• To highlight the challenges posed by antibody conformational flexibility.
• To discuss the potential of integrative modeling approaches.

Main Methods:

• Review of existing literature on antibody structure determination and modeling.
• Discussion of experimental techniques like cryo-electron microscopy and mass spectrometry.
• Exploration of computational methods including molecular dynamics simulations and deep learning.

Main Results:

• Emerging efforts are focused on determining and modeling full-length antibody structures.
• Conformational flexibility is a major hurdle in obtaining accurate structural models.
• Integrative modeling shows promise for characterizing antibody conformational landscapes.

Conclusions:

• Accurate modeling of full-length antibody structures requires addressing conformational flexibility.
• Integrative approaches combining experimental and computational data are essential.
• These methods offer a path to understanding the complex conformational dynamics of antibodies.