Deep Knot Structure for Construction of Active Site and Cofactor Binding Site of tRNA Modification Enzyme
Nureki, O., Watanabe, K., Fukai, S., Ishii, R., Endo, Y., Hori, H., Yokoyama, S.(2004) Structure 12: 593-602
- PubMed: 15062082 
- DOI: 10.1016/j.str.2004.03.003
- Primary Citation of Related Structures:  
1V2X - PubMed Abstract: 
The tRNA(Gm18) methyltransferase (TrmH) catalyzes the 2'-O methylation of guanosine 18 (Gua18) of tRNA. We solved the crystal structure of Thermus thermophilus TrmH complexed with S-adenosyl-L-methionine at 1.85 A resolution. The catalytic domain contains a deep trefoil knot, which mutational analyses revealed to be crucial for the formation of the catalytic site and the cofactor binding pocket ...