Atomistic Modeling of Scattering Curves for Human IgG1/4 Reveals New Structure-Function Insights.

ABSTRACT: Small angle x-ray and neutron scattering are techniques that give solution structures for large macromolecules. The creation of physically realistic atomistic models from known high-resolution structures to determine joint x-ray and neutron scattering best-fit structures offers a, to our knowledge, new method that significantly enhances the utility of scattering. To validate this approach, we determined scattering curves for two human antibody subclasses, immunoglobulin G (IgG) 1 and IgG4, on five different x-ray and neutron instruments to show that these were reproducible, then we modeled these by Monte Carlo simulations. The two antibodies have different hinge lengths that connect their antigen-binding Fab and effector-binding Fc regions. Starting from 231,492 and 190,437 acceptable conf

SUBMITTER: Wright DW 

PROVIDER: S-EPMC6895691 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature