Structural basis of PAM-dependent target DNA recognition by the Cas9 endonuclease : Nature : Nature
a, Detailed view of the minor groove of the PAM region. b, Hydrogen-bonding interactions (dashed lines) of the +1 phosphate (+1P) with the Lys 1107–Ser 1109 (phosphate lock) loop. c, Superposition of the unwound target DNA strand with an ideal B-form DNA ...