Fig. 6
ArsRMcontributes to the methylation of As(III). (A) Structural overview of ArsRM and interactions between ArsRM and its substrates As(III) and SAM. (B) Interactions of ArsRM-bound As(III). Bound arsenic is shown as purple spheres. (C) Methyltransferase activity of ArsRM. Control: reaction mixture with ArsRM only; no SAM: reaction mixture without SAM; no AS: reaction mixture without As(III); no ArsRM: reaction mixture without ArsRM; ArsRM: complete reaction mixture including ArsRM, SAM, and As(III).