Figure 2.
Neither His128 nor I218 provides binding specificity of 7 to bsNOS. (A) WT bsNOS–7 with 2FO– FC map contoured at 2.0σ reveals a 3.3 Å H-bond interaction between His128 and the hydroxyl group of 7. (B) H128S-bsNOS–7 crystal structure with 2FO – FC map contoured at 1.5σ. (C) I218V-bsNOS–7 crystal structure with 2FO – FC map contoured at 1.8σ. (D) 2D chemical structure of 7.