Structures of pseudechetoxin and pseudecin, two snake-venom cysteine-rich secretory proteins that target cyclic nucleotide-gated ion channels: implications for movement of the C-terminal cysteine-rich domain

Suzuki, N.; Yamazaki, Y.; Brown, R.L.; Fujimoto, Z.; Morita, T.; Mizuno, H.

doi:10.1107/S0907444908023512

Acta Crystallographica Section D
Acta Crystallographica
Section D BIOLOGICAL CRYSTALLOGRAPHY

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Figure 2
(a) Stereoview of the structural comparison between PsTx and Pdc. Ribbon models of PsTx and Pdc are shown in cyan and magenta, respectively. Amino-acid residues that differ between PsTx and Pdc are indicated by side chains and are labelled. The Na⁺ ion-binding site at the bottom is shown with the side chains of the coordinated residues (labelled) and the bound Na⁺ ion as a purple sphere. (b) A close-up view of the Na⁺ ion-coordination geometries in Pdc with 2F_o − F_c electron-density map contoured at 1.5σ.

BIOLOGICAL
CRYSTALLOGRAPHY

ISSN: 1399-0047

Volume 64| Part 10| September 2008| Pages 1034-1042

doi:10.1107/S0907444908023512

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