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Pepsin inhibitor-3-like repeated domain Pepsin inhibitor-3 consisting of two domains, each comprising an antiparallel beta-sheet flanked by an alpha-helix. In the enzyme-inhibitor complex, the N-terminal beta-strand of PI-3 pairs with one strand of the active site flap region of pepsin. The two domains are tandem repeats of sequence, and has therefore been termed repeated domain. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",