| HJT | Hypericum japonicum Thunb. ex Murray |
| PEDV | Porcine epidemic diarrhea virus |
| PED | Porcine epidemic diarrhea |
| DMEM | Dulbecco’s modified Eagle medium |
| PBS | phosphate buffer solution |
| BSA | bovine serum albumin |
| CCK-8 | Cell counting Kit-8 |
| RIPA | Radio immunoprecipitation assay |
| SDS-PAGE | Sodium dodecyl sulfate-polyacrylamide gel electrophoresis |
| PVDF | polyvinylidene fluoride |
| ECL | enhanced chemiluminescence |
| TBST | tris-buffered saline containing tween-20 |
| IPI-FX | immortal pig intestinal |
| UFLC-Q-TOF-MS/MS | ultra-fast liquid chromatography/quadrupole-time-of-flight tandem mass spectrometry system for analysis. |
| PLP-2 | papain-like protease 2 |
| 3CLpro | 3C-like protease |
| ARG | Arginine |
| SER | Serine |
| THR | Threonine |
| PHE | Phenylalanine |
| GLU | Glutamic acid |
| LYS | Lysine |
| LEU | Leucine |
| TYR | Tyrosine |
| TRP | Tryptophan |
| ILE | Isoleucine |