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. Author manuscript; available in PMC: 2021 Sep 1.
Published in final edited form as: Science. 2020 Jun 19;368(6497):1381–1385. doi: 10.1126/science.aaz6748

Fig. 1. The oxidized P-clusters in Av1*.

Fig. 1.

Structures of P-clusters at (A–C) Chain-A/B interface (P-cluster(A/B)) and (D–F) Chain-C/D interface (P-cluster(C/D)) of Av1*. Chain-A and Chain-C are the α-subunits, and Chain-B and Chain-D are the β-subunits of the two αβ-dimers of Av1*. (A, D) The P-clusters are shown in ball-and-stick presentation, and the key residues interacting with the P-clusters are indicated as sticks. Chain-A and Chain-C are shown as wheat ribbons, and Chain-B and Chain-D are shown as light-blue ribbons. (B, C) P-cluster(A/B) and (E, F) P-cluster(C/D) superimposed with (B, E) the anomalous density maps calculated at 7100 eV at a resolution of 2.18 Å and contoured at 4.0 σ, showing the position of sulfur atoms (mint-blue mesh); and with (C, F) the anomalous density maps calculated at 7141 eV at a resolution of 2.1 Å and contoured at 15.0 σ, showing the position of iron atoms (red mesh). Color code of atoms: Fe, orange; S, yellow; O, red; N, blue.