Crystal structure of the HhaI DNA methyltransferase complexed with S-adenosyl-L-methionine.
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Cheng X, Kumar S, Posfai J, Pflugrath JW, Roberts RJ
Crystal structure of the HhaI DNA methyltransferase complexed with S-adenosyl-L-methionine.
Cell. 1993 Jul 30;74(2):299-307.
- PubMed ID
- 8343957 [ View in PubMed]
- Abstract
The first three-dimensional structure of a DNA methyltransferase is presented. The crystal structure of the DNA (cytosine-5)-methyltransferase, M.HhaI (recognition sequence: GCGC), complexed with S-adenosyl-L-methionine has been determined and refined at 2.5 A resolution. The core of the structure is dominated by sequence motifs conserved among all DNA (cytosine-5)-methyltransferases, and these are responsible for cofactor binding and methyltransferase function.