Fig. 3.

Dimer interfaces. (A) The topside view of the βγ complex. The γ-subunit is shown as a surface representation in which the residues interacting with bα₁ (cyan) are colored orange and those interacting with HTH (dark blue) are colored yellow. ZBD is not shown. (B) The interactions between bα₁ and the back side of the G domain. The residues involved in the contacts are shown as stick models, along with hydrogen bonds (dashed red lines). The conservative residues and the residues mentioned in the text are labeled. (C) The interactions between HTH and the topside of the G domain.