Correlating membrane-protein dynamics with function: Integrating bioinformatics, molecular dynamics, and single-molecule FRET.

ABSTRACT: We present a strategy that deploys structural bioinformatics, molecular simulation, and single-molecule FRET microscopy for observing the ligand-dependent conformational dynamics of integral membrane proteins in situ. We focus on representative members of the small monotopic phosphoglycosyl transferase (SmPGT) superfamily, which catalyze transfer of a phosphosugar from a soluble nucleotide-sugar donor to a membrane-embedded polyprenol phosphate acceptor in the initiating step of glycoconjugate biosynthesis in prokaryotes. Substrate-specific structural features were identified across the superfamily and correlated with ligand-dependent conformational dynamics in all-atom simulations. To experimentally validate the role of this motion in ligand binding, we developed a platform to moni

SUBMITTER: Higinbotham HR 

PROVIDER: S-EPMC12157426 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature