Article
A monomeric mutant of restriction endonuclease EcoRI nicks DNA without sequence specificity.
Biological chemistry - 1 Oct 2004
Fritsche Petra, Alves Jürgen
Abstract excerpt
We have mutated the monomer-monomer interface of the restriction endonuclease EcoRI in order to destabilize the homodimer and to stabilize heterodimers. Mutations of Leu158 to charged amino acid residues result in strong destabilization of the dimer. The largest effect was detected for the L158D mutant which is monomeric even at higher concentrations. It unspecifically degrades DNA by cleaving both single strands...
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