Fig. 2: IscB structure.
From: Structure of the IscB–ωRNA ribonucleoprotein complex, the likely ancestor of CRISPR-Cas9
The conserved catalytic residues in the RuvC domain and the PLMP motif in the PLMP domain are shown as stick models. The possible location of the HNH domain is indicated by a dashed circle. The core α-helices and β-strands in each domain are numbered in red and blue, respectively.
