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Figure 2.
Figure 2. Structure of the β:δ Complex(A) View along the
edge of the β ring, centered on Domain 2 of β. (B) View
showing the intermolecular interface involving Domain 3 of β.
Structures shown in color are the β subunit and the δ subunit
from the crystal structure of the complex. For reference, a
second β monomer is shown in gray, taken from the crystal
structure of the dimeric form of β (Kong et al., 1992), PDB
code 2POL. The β-interaction element on δ (helix α4 and the
loop following it) is colored yellow, and the side chains of two
key hydrophobic residues of δ (Leu-73 and Phe-74) are shown
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