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. 2022 Jul 4;23(13):7448. doi: 10.3390/ijms23137448

Figure 4.

Figure 4

Crystal structure of PKR (PDB:2VGB) showing the allosteric site with FBP bound (red sphere), dimer–dimer interface binding site where the synthetic AG-348 is known to bind, and the active site with bound PEP (green sphere). The four subunits are shown in ribbons and colored gray, cyan, purple, and pink.