학술논문

Combining small angle X-ray scattering (SAXS) with protein structure predictions to characterize conformations in solution
Document Type
chapter
Source
Subject
Biochemistry and Cell Biology
Bioinformatics and Computational Biology
Biological Sciences
Machine Learning and Artificial Intelligence
1.1 Normal biological development and functioning
Underpinning research
Generic health relevance
Protein Conformation
X-Ray Diffraction
Scattering
Small Angle
X-Rays
Models
Molecular
Proteins
BILBOMD
CASP-SAXS
FoXS
Hybrid method
Metagenomics
Protein flexibility
Protein structure prediction
Biochemistry & Molecular Biology
Biochemistry and cell biology
Language
Abstract
Accurate protein structure predictions, enabled by recent advances in machine learning algorithms, provide an entry point to probing structural mechanisms and to integrating and querying many types of biochemical and biophysical results. Limitations in such protein structure predictions can be reduced and addressed through comparison to experimental Small Angle X-ray Scattering (SAXS) data that provides protein structural information in solution. SAXS data can not only validate computational predictions, but can improve conformational and assembly prediction to produce atomic models that are consistent with solution data and biologically relevant states. Here, we describe how to obtain protein structure predictions, compare them to experimental SAXS data and improve models to reflect experimental information from SAXS data. Furthermore, we consider the potential for such experimentally-validated protein structure predictions to broadly improve functional annotation in proteins identified in metagenomics and to identify functional clustering on conserved sites despite low sequence homology.