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Updated: Jul 17, 2026
07:33
Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry
Published on: October 15, 2018
14.4K
[πDMD Simulation as a Strategy for Refinement of AlphaFold2 Modeled Fuzzy Protein Complexes Structures]
N G Muradyan1, A A Sargsyan1,2, V G Arakelov1
1Laboratory of Computational Modeling of Biological Processes, Institute of Molecular Biology of the National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan, 0014 Armenia.
Molekuliarnaia Biologiia
|June 25, 2025
Summary
Intrinsically disordered proteins lack defined structures but are vital in cellular functions and disease. Our study shows computational modeling can reveal assembled structures in these disordered protein regions.
Area of Science:
- Biochemistry and Structural Biology
- Computational Biology
- Molecular Biophysics
Context:
- Intrinsically disordered proteins (IDPs) and regions (IDRs) lack stable 3D structures, posing challenges for structural biology.
- IDPs/IDRs are implicated in crucial cellular processes and various diseases, including cancer and viral infections.
- Understanding the conformational dynamics of IDPs/IDRs is essential for deciphering their biological functions.
Purpose:
- To investigate the structural assembly of protein complexes involving intrinsically disordered proteins/regions using in silico methods.
- To model complexes containing both ordered proteins (e.g., 14-3-3γ) and proteins with disordered regions (e.g., SARS-CoV-2 nucleocapsid (N), p53).
- To refine modeled structures using discrete molecular dynamics (DMD) simulations to capture dynamic conformational states.
Summary:
- Utilized AlphaFold2 for initial modeling of protein complexes, including those with intrinsically disordered regions.
- Applied discrete molecular dynamics simulations to refine the modeled complexes, focusing on the disordered segments.
- Demonstrated that refined models exhibit significant structural assembly within the disordered regions of the studied proteins.
Impact:
- Provides a computational approach to study the structural dynamics of intrinsically disordered proteins.
- Offers insights into the assembly of protein complexes involving IDPs/IDRs, relevant to viral mechanisms and disease pathways.
- Addresses the challenge of characterizing the transient and dynamic structures of disordered proteins, advancing their study.
