Download MendeleyDifferential Structural Features of Two Mutant ADAR1p150 Z alpha Domains Associated with Aicardi-Goutieres Syndrome.
Langeberg, C.J., Nichols, P.J., Henen, M.A., Vicens, Q., Vogeli, B.(2023) J Mol Biol 435: 168040-168040
- PubMed: 36889460
- DOI: https://doi.org/10.1016/j.jmb.2023.168040
- Primary Citation of Related Structures:
8GBC, 8GBD - PubMed Abstract:
The Zα domain of ADARp150 is critical for proper Z-RNA substrate binding and is a key factor in the type-I interferon response pathway. Two point-mutations in this domain (N173S and P193A), which cause neurodegenerative disorders, are linked to decreased A-to-I editing in disease models. To understand this phenomenon at the molecular level, we biophysically and structurally characterized these two mutated domains, revealing that they bind Z-RNA with a decreased affinity. Less efficient binding to Z-RNA can be explained by structural changes in beta-wing, part of the Z-RNA-protein interface, and alteration of conformational dynamics of the proteins.
Organizational Affiliation:
Department of Biochemistry and Molecular Genetics and RNA Bioscience Initiative, University of Colorado Denver School of Medicine, Aurora, CO 80045, USA. Electronic address: CONNER.LANGEBERG@CUANSCHUTZ.EDU.
