The BAH1 and BAH2 domain is connected by an alpha-helix and there is a Cys3His coordinated Zn2+ anchors the BAH1 domain to the alpha-helix
Picture of mDNMT1-DNA complex with Zn ions shown in cyan spheres
The function of BAH1 and BAH2 domains is suggested as a platform for other protein interactions since these two domains provide a large accessible surface surrounding the catalytic domain.
