The question of how proteins recognize specific DNA sequences in the face of vastly higher concentrations of non-specific DNA remains unclear. One suggested mechanism involves the formation of hydrogen bonds with specific bases, primarily in the major groove. The comprehensive analysis of the three-dimensional structures of protein–DNA complexes now shows that the binding of arginine residues to narrow minor grooves is a widely used mode for protein–DNA recognition.
- Remo Rohs
- Sean M. West
- Barry Honig
