Fig. 4.

(a) Sequence alignment of the CysG^A domain of the CysG^A–HemD fusion protein from Hb. mobilis and Hp. fasciatum (Hm_CysG^A and Hf_CysG^A, respectively) with the CysG^A domain of the CysG protein of S. enterica for which a crystal structure is available (1PJS). Identical sequence matches in the alignment are indicated by ‘*’, strongly similar matches by ‘:’, and weakly similar matches by ‘.’. (b) 3D model of the CysG^A domain for Hb. mobilis based on the above alignment. The position of the bound cofactor SAH (demethylated SAM) is also shown.