Fig. 1: Overall structure of the IscB–ωRNA–target DNA complex.
From: Structure of the IscB–ωRNA ribonucleoprotein complex, the likely ancestor of CRISPR-Cas9

a Domain structures of the wild-type and ΔHNH mutant of OgeuIscB. BH, bridge helix. b, c Ribbon (b) and surface (c) representations of the IscB–ωRNA–target DNA complex. TS target DNA strand, NTS non-target DNA strand.