Bottom-up design of calcium channels from defined selectivity filter geometry.

ABSTRACT: Native ion channels play key roles in biological systems, and engineered versions are widely used as chemogenetic tools and in sensing devices^1,2. Protein design has been harnessed to generate pore-containing transmembrane proteins, but the capability to design ion selectivity based on the interactions between ions and selectivity filter residues, a crucial feature of native ion channels³, has been constrained by the lack of methods to place the metal-coordinating residues with atomic-level precision. Here we describe a bottom-up RFdiffusion-based approach to construct Ca²⁺ channels from defined selectivity filter residue geometries, and use this approach to design symmetric oligomeric channels with Ca²⁺ selectivity filters having different coord

SUBMITTER: Liu Y 

PROVIDER: S-EPMC11702685 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature