Fig. 2. Structure of the V1 region.
(A) Surface representation. Scale bar, 25 Å. (B) Cross-section through the V1 region viewed from V1 towards VO. ADP is shown in green. (C) Superposition of the catalytic AB pairs (left) and closeup of the conformations of the nucleotide binding sites (right). Scale bar, 5 Å. (D) Interaction of subunits B2, E1, and G2. N and C termini of models are indicated by ‘*’. (E) A continuous β-sheet is formed by E1 and B2 (purple arrowhead).