Recognition of Dimethylarginine Analogues by Tandem Tudor Domain Protein Spindlin1

Miriam R. B. Porzberg, Laust Moesgaard, Catrine Johansson, Udo Oppermann, Jacob Kongsted, Jasmin Mecinović*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Epigenetic readout of the combinatorial posttranslational modification comprised of trimethyllysine and asymmetric dimethylarginine (H3K4me3R8me2a) takes place via biomolecular recognition of tandem Tudor-domain-containing protein Spindlin1. Through comparative thermodynamic data and molecular dynamics simulations, we sought to explore the binding scope of asymmetric dimethylarginine mimics by Spindlin1. Herein, we provide evidence that the biomolecular recognition of H3K4me2R8me2a is not significantly affected when R8me2a is replaced by dimethylarginine analogues, implying that the binding of K4me3 provides the major binding contribution. High-energy water molecules inside both aromatic cages of the ligand binding sites contribute to the reader–histone association upon displacement by histone peptide, with the K4me3 hydration site being lower in free energy due to a flip of Trp151
Original languageEnglish
Article number983
JournalMolecules
Volume27
Issue number3
Number of pages12
ISSN1420-3049
DOIs
Publication statusPublished - Feb 2022

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