Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Direct Phasing of Protein Crystals with Continuous Iterative Projection Algorithms and Refined Envelope Reconstruction.

Biomolecules·2026
Same author

Direct Phasing of Protein Crystals with Hybrid Difference Map Algorithms.

Molecules (Basel, Switzerland)·2026
Same author

DNA methylation meets lineage tracing: History, recent progress, and future directions.

Quantitative biology (Beijing, China)·2026
Same author

Electronic-vibrational resonance damping time-dependent photosynthetic energy transfer acceleration revealed by 2D electronic spectroscopy.

The Journal of chemical physics·2025
Same author

High-resolution, noninvasive single-cell lineage tracing in mice and humans based on DNA methylation epimutations.

Nature methods·2025
Same author

First-principles studies of electronic properties in lithium metasilicate (Li<sub>2</sub>SiO<sub>3</sub>).

RSC advances·2022
Same journal

RETRACTED: Atta et al. Effect of Montmorillonite Nanogel Composite Fillers on the Protection Performance of Epoxy Coatings on Steel Pipelines. <i>Molecules</i> 2017, <i>22</i>, 905.

Molecules (Basel, Switzerland)·2026
Same journal

Correction: Chen et al. Chemical Composition of <i>Litsea pungens</i> Essential Oil and Its Potential Antioxidant and Antimicrobial Activities. <i>Molecules</i> 2023, <i>28</i>, 6835.

Molecules (Basel, Switzerland)·2026
Same journal

Correction: Ruan et al. Comparison of Extraction, Isolation, Purification, Structural Characterization and Immunomodulatory Activity of Polysaccharides from Two Species of <i>Cistanche</i>. <i>Molecules</i> 2025, <i>30</i>, 4754.

Molecules (Basel, Switzerland)·2026
Same journal

Correction: Li et al. Gastrodin Ameliorates Cognitive Dysfunction in Vascular Dementia Rats by Suppressing Ferroptosis via the Regulation of the Nrf2/Keap1-GPx4 Signaling Pathway. <i>Molecules</i> 2022, <i>27</i>, 6311.

Molecules (Basel, Switzerland)·2026
Same journal

Correction: Zueva et al. Steady-State Kinetics of Enzyme-Catalyzed Hydrolysis of Echothiophate, a P-S Bonded Organophosphorus as Monitored by Spectrofluorimetry. <i>Molecules</i> 2020, <i>25</i>, 1371.

Molecules (Basel, Switzerland)·2026
Same journal

1,4-Diazatriphenylene and Its Hetero-Fused Analogs: Synthesis and Applications.

Molecules (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: May 31, 2025

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes
11:42

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Published on: November 1, 2012

9.9K

Genetic Algorithm-Enhanced Direct Method in Protein Crystallography.

Ruijiang Fu1, Wu-Pei Su2, Hongxing He1

  • 1Department of Physics, School of Physical Science and Technology, Ningbo University, Ningbo 315211, China.

Molecules (Basel, Switzerland)
|January 25, 2025
PubMed
Summary
This summary is machine-generated.

This study introduces an enhanced direct method using genetic algorithms to improve protein crystal structure determination from X-ray diffraction data. The novel approach significantly boosts success rates and reduces errors, enabling accurate electron density map reconstruction.

Keywords:
direct methodgenetic algorithmnon-crystallographic symmetryparallel computingphase problemprotein crystallography

More Related Videos

Protein Crystallization for X-ray Crystallography
09:27

Protein Crystallization for X-ray Crystallography

Published on: January 16, 2011

63.3K
Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
14:04

Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

Published on: January 16, 2021

4.6K

Related Experiment Videos

Last Updated: May 31, 2025

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes
11:42

Iterative Optimization of DNA Duplexes for Crystallization of SeqA-DNA Complexes

Published on: November 1, 2012

9.9K
Protein Crystallization for X-ray Crystallography
09:27

Protein Crystallization for X-ray Crystallography

Published on: January 16, 2011

63.3K
Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening
14:04

Derivatization of Protein Crystals with I3C using Random Microseed Matrix Screening

Published on: January 16, 2021

4.6K

Area of Science:

  • Crystallography
  • Structural Biology
  • Computational Biology

Background:

  • Direct methods for protein structure determination from X-ray diffraction data are crucial but often fail due to local minima during electron density iteration.
  • Traditional methods struggle with complex structures, including those with high solvent content or non-crystallographic symmetry.

Purpose of the Study:

  • To develop and validate an enhanced direct method for protein crystal structure determination.
  • To overcome the limitations of traditional direct methods by incorporating genetic algorithms for electron density modification.

Main Methods:

  • Implementation of a genetic algorithm for real-space electron density modification, featuring customized genetic operators and parallelization using Message Passing Interface (MPI).
  • Testing the enhanced method on 15 diverse protein structures with varying space groups, resolutions (1.35–2.5 Å), solvent content, and non-crystallographic symmetry (NCS).

Main Results:

  • The enhanced direct method achieved success rates approaching 100%, a significant improvement from below 30% for traditional methods.
  • Average phase errors were reduced to below 40°, yielding electron density maps suitable for automated model building.
  • Demonstrated effectiveness across various challenging structural cases, including high-solvent and low-solvent content, and NCS.

Conclusions:

  • The enhanced direct method offers a robust and effective alternative for solving protein crystal structures, particularly those challenging for existing computational and experimental phasing techniques.
  • This approach significantly improves the accuracy and reliability of direct methods in protein crystallography.
  • The developed method provides a valuable tool for structural biologists, complementing predictive tools like AlphaFold3 and aiding in solving difficult structures.