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Figure 1.
Figure 1. Unbound Compact Structure of Native Ca^2+-CaM(A)
Stereoview of the electron density (2Fo-Fc at 1 s level) for the
N-domain of Ca^2+-CaM, showing the N-terminal acetoalanine
(n-ACE) and residues 2, 3, and 4 as a ball and stick model.
Carbon atoms are green, oxygens are red, and nitrogens are
blue.(B) Stereoview of the ribbon diagram of Ca^2+-CaM showing
interdomain contacts. The CaM backbone is purple, loops are
brown, and calciums are blue spheres. The sidechains that make
contact (including 16 hydrogen bonds (<3.4 Å) and 24 van der
Waals interactions (<4 Å)) between domains are shown (atom
colors as Figure 1A, with sulfur yellow). Helices are numbered
from I-VIII.
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