6N0S:
reference: The N-terminal domain of Staphylothermus marinus McrB shares structural homology with PUA-like RNA binding proteins., Hosford CJ, Adams MC, Niu Y, Chappie JS, J Struct Biol. 2020 Sep 1;211(3):107572. doi: 10.1016/j.jsb.2020.107572. Epub, 2020 Jul 8. PMID: 32652237

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