4XCX: Methyltransferase Domain Of Small Rna 2'-O-Methyltransferase
reference: Crystal structure of the chemokine receptor CXCR4 in complex with a viral chemokine., Qin L, Kufareva I, Holden LG, Wang C, Zheng Y, Zhao C, Fenalti G, Wu H, Han GW, Cherezov V, Abagyan R, Stevens RC, Handel TM, Science. 2015 Jan 22. pii: 1261064. PMID: 25612609

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