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. 2004 Jul 1;32(Web Server issue):W576–W581. doi: 10.1093/nar/gkh370

Figure 3.

Figure 3

DUF431 belongs to the superfamily of α/β-knot SAM-dependent RNA methyltransfeases. The 3D model of the cofactor-binding domain of the DUF431 consensus sequence was based on the structure of the YibK, hypothetical tRNA/rRNA methyltransferase HI0766 (33) (PDB code: 1mxi) from Haemophilus influenzae. The pseudoknot is coloured in violet. The S-adenosylhomocysteine (SAH) (grey) and positions of highly conserved residues (red dots) essential for the pseudoknot formation (Ala72) and SAH binding (Gly90) are shown.