mRNA cap recognition: dominant role of enhanced stacking interactions between methylated bases and protein aromatic side chains.
Hu, G., Gershon, P.D., Hodel, A.E., Quiocho, F.A.(1999) Proc Natl Acad Sci U S A 96: 7149-7154
- PubMed: 10377383 
- DOI: 10.1073/pnas.96.13.7149
- Primary Citation of Related Structures:  
1B42, 1BKY, 1EAM, 1EQA, 3MAG, 3MCT, 4DCG - PubMed Abstract: 
We have determined, by high resolution x-ray analysis, 10 structures comprising the mRNA cap-specific methyltransferase VP39 or specific mutants thereof in the presence of methylated nucleobase analogs (N1-methyladenine, N3-methyladenine, N1-methylcytosine, N3-methylcytosine) and their unmethylated counterparts, or nucleoside N7-methylguanosine ...