4BF9:
reference: Major reorientation of tRNA substrates defines specificity of dihydrouridine synthases., Byrne RT, Jenkins HT, Peters DT, Whelan F, Stowell J, Aziz N, Kasatsky P, Rodnina MV, Koonin EV, Konevega AL, Antson AA, Proc Natl Acad Sci U S A. 2015 Apr 22. pii: 201500161. PMID: 25902496

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