3T7Z:
reference: Structurally Conserved Nop56/58 N-terminal Domain Facilitates Archaeal Box C/D Ribonucleoprotein-guided Methyltransferase Activity., Gagnon KT, Biswas S, Zhang X, Brown BA 2nd, Wollenzien P, Mattos C, Maxwell ES, J Biol Chem. 2012 Jun 1;287(23):19418-28. Epub 2012 Apr 11. PMID: 22496443

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