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Domain organization and tertiary structure of ZPR1. (A) Schematic illustration of the modular architecture of ZPR1, which consists of two homologous Zn2+ finger-A/B domain modules. (B) Ribbon representation of the tertiary structure of ZPR1. (C) Structural alignment of the first ZnF in ZPR1 with the ZnF in eEIF2. (D) Structural alignment of the β-helix in the ZPR1 A domain with the β-helix in the Trp RNA-binding protein TRAP.
