Figure 9.
Schematic representation of the pair-wise intermolecular contacts in the rabbit skeletal tropomyosin overlap obtained by X-ray diffraction. Chains A and B are the α-helices of the tropomyosin C-terminus, which remain as a coiled-coil throughout their length. Chain I is the single α-helix of the N-terminal tropomyosin segment that interacts in an oblique manner with the C-terminal coiled-coil. The intermolecular contacts shown in this figure were abstracted from coordinates obtained from the RCSB (accession number 2Z5I) (29).