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NMR Observation of Intermolecular Hydrogen Bonds between Protein Tyrosine Side-Chain OH and DNA Phosphate Groups.


ABSTRACT: Hydrogen bonds between protein side-chain hydroxyl (OH) and phosphate groups are one of the most common types of intermolecular hydrogen bonds in protein-DNA/RNA complexes. Using NMR spectroscopy, we identified and characterized the hydrogen bonds between tyrosine side-chain OH and DNA phosphate groups in a protein-DNA complex. These OH groups exhibited relatively slow hydrogen-exchange rates and sizable scalar couplings between hydroxyl 1H and DNA phosphate 31P nuclei across the hydrogen bonds. Information about intermolecular hydrogen bonds facilitates investigations of the DNA/RNA recognition by the protein.

SUBMITTER: Yu B 

PROVIDER: S-EPMC7021563 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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NMR Observation of Intermolecular Hydrogen Bonds between Protein Tyrosine Side-Chain OH and DNA Phosphate Groups.

Yu Binhan B   Pletka Channing C CC   Iwahara Junji J  

The journal of physical chemistry. B 20200130 6


Hydrogen bonds between protein side-chain hydroxyl (OH) and phosphate groups are one of the most common types of intermolecular hydrogen bonds in protein-DNA/RNA complexes. Using NMR spectroscopy, we identified and characterized the hydrogen bonds between tyrosine side-chain OH and DNA phosphate groups in a protein-DNA complex. These OH groups exhibited relatively slow hydrogen-exchange rates and sizable scalar couplings between hydroxyl <sup>1</sup>H and DNA phosphate <sup>31</sup>P nuclei acro  ...[more]

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