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Figure 4.
Additional binding sites of I^− in I^−-substituted PSII.
(A) Fo-Fc omit map of PSII with I^− substitution (red)
contoured at σ = 3.0, superimposed on the structure of CP47
(green) obtained by the molecular replacement method, showing
the association of I^− with CP47-Cys-112. (B) Fo-Fc omit map
of PSII with I^− substitution (red) contoured at σ = 3.0,
superimposed on the structure of PsbTc (pink), showing the
association of I^− with PsbTc-Cys-12. The capsule-shaped
objects show the direction of atoms from Cα to Cβ in the 2 Cys
residues. (C) 2Fo-Fc map (blue, σ = 1.0) and omit Fo-Fc map
(red, σ = 2.0) of PSII with I^− substitution around the
region of D2-Tyr-160(Y[D]), together with the structure of D2
(green) in this region.
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