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Structural features of PPM1 family. A. Crystal structure of PPM1A, extracted from https://structure.ncbi.nlm.nih.gov/icn3d/share.html?jT2XiUe6vY7NqXAp8. B. Illustration of PPM1 structure showing the distribution of β-sheet, α-helical, and 13 loops (L1–L13).
