Pseudo-merohedral twinning and noncrystallographic symmetry in orthorhombic crystals of SIVmac239 Nef core domain bound to different-length TCRζ fragments

Kim, W.M.; Sigalov, A.B.; Stern, L.J.

doi:10.1107/S090744490904880X

Acta Crystallographica Section D
Acta Crystallographica
Section D STRUCTURAL BIOLOGY

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Figure 4
Twinning in an orthorhombic P2₁2₁2₁ crystal. (a) A P4₃2₁2 space-group unit cell with one molecule (arrow) per ASU (eight per unit cell) is shown with axes a, b and c labeled. (b) A P2₁2₁2₁ space-group unit cell with one molecule per ASU (four per unit cell) is shown (left) with its twin unit cell (right) related by the twin operator (y, x, −z). (c) A P2₁2₁2₁ space-group unit cell with two molecules per ASU (four per unit cell) is shown (left) with its twin unit cell (right) related by the twin operator (y, x, −z). The ASU is comprised of one blue and one black arrow related by noncrystallographic symmetry.

STRUCTURAL
BIOLOGY

ISSN: 2059-7983

Volume 66| Part 2| February 2010| Pages 163-175

https://doi.org/10.1107/S090744490904880X

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