3EUD:
reference: Structure and functional studies of the CS domain of the essential H/ACA ribonucleoparticle assembly protein SHQ1., Singh M, Gonzales FA, Cascio D, Heckmann N, Chanfreau G, Feigon J, J Biol Chem. 2009 Jan 16;284(3):1906-16. Epub 2008 Nov 19. PMID: 19019820

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