PMID: 8343957

Authors:

Cheng X, Kumar S, Posfai J, Pflugrath JW, Roberts RJ

Title:

Crystal structure of the HhaI DNA methyltransferase complexed with S-adenosyl-L-methionine.

Journal:

Cell. 1993 Jul 30;74(2):299-307.

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.