| Tissue Specificity | Expressed in eosinophils and neutrophils, not expressed in peripheral monocytes or lymphocytes. |
| Post Translational Modifications | Autocitrullination at Arg-372 and Arg-374 inactivates the enzyme. |
| Function | Catalyzes the citrullination/deimination of arginine residues of proteins such as histones, thereby playing a key role in histone code and regulation of stem cell maintenance. Citrullinates histone H1 at 'Arg-54' (to form H1R54ci), histone H3 at 'Arg-2', 'Arg-8', 'Arg-17' and/or 'Arg-26' (to form H3R2ci, H3R8ci, H3R17ci, H3R26ci, respectively) and histone H4 at 'Arg-3' (to form H4R3ci). Acts as a key regulator of stem cell maintenance by mediating citrullination of histone H1: citrullination of 'Arg-54' of histone H1 (H1R54ci) results in H1 displacement from chromatin and global chromatin decondensation, thereby promoting pluripotency and stem cell maintenance. Promotes profound chromatin decondensation during the innate immune response to infection in neutrophils by mediating formation of H1R54ci. Required for the formation of neutrophil extracellular traps (NETs).NETs are mainly composed of DNA fibers and are released by neutrophils to bind pathogens during inflammation. Citrullination of histone H3 prevents their methylation by CARM1 and HRMT1L2/PRMT1 and represses transcription. Citrullinates EP300/P300 at 'Arg-2142', which favors its interaction with NCOA2/GRIP1. |
| Protein Name | Protein-Arginine Deiminase Type-4Hl-60 PadPeptidylarginine Deiminase IvProtein-Arginine Deiminase Type Iv |
| Database Links | Reactome: R-HSA-3247509 |
| Cellular Localisation | CytoplasmNucleusCytoplasmic GranuleCytoplasmic Granules Of Eosinophils And Neutrophils |
| Alternative CLIA Names | Protein-Arginine Deiminase Type-4 CLIA kitHl-60 Pad CLIA kitPeptidylarginine Deiminase Iv CLIA kitProtein-Arginine Deiminase Type Iv CLIA kitPADI4 CLIA kitPAD4 CLIA kitPADI5 CLIA kitPDI5 CLIA kit |
| Specificity | This kit recognizes Human PADI4 in samples. No significant cross-reactivity or interference between Human PADI4 and analogues was observed. |
| Reproducibility | Both intra-CV and inter-CV are |
Information sourced from Uniprot.org
| Item | Specifications | Storage |
| Micro CLIA Plate (Dismountable) | 96T: 8 wells ×12 strips strips | -20℃, 6 months |
| Reference Standard | 96T: 2 vials 48T: 1 vial | -20℃, 6 months |
| Concentrated Biotinylated Detection Ab (100×) | 96T: 1 vial, 120 μL 60 μL | -20℃, 6 months |
| Concentrated HRP Conjugate (100×) | 96T: 1 vial, 120 μL 60 μL | -20℃ (Protect from light), 6 months |
| Reference Standard & Sample Diluent | 1 vial, 20 mL | 2-8°C, 6 months |
| Biotinylated Detection Ab Diluent | 1 vial, 14 mL | 2-8°C, 6 months |
| HRP Conjugate Diluent | 1 vial, 14 mL | 2-8°C, 6 months |
| Concentrated Wash Buffer (25×) | 1 vial, 30 mL | 2-8°C, 6 months |
| Substrate Reagent A | 1 vial, 5 mL | 2-8℃ (Protect from light) |
| Substrate Reagent B | 1 vial, 5 mL | 2-8℃ (Protect from light) |
| Plate Sealer | 5 pieces | |
| Manual | 1 copy | |
| Certificate of Analysis | 1 copy | |
| Sample Type | Range (%) | Average Recovery (%) |
| Serum(n=8) | 98-110 | 103 |
| EDTA plasma(n=8) | 99-114 | 106 |
| Cell culture media(n=8) | 88-100 | 95 |
| | Intra-assay Precision | Intra-assay Precision | Intra-assay Precision | Inter-assay Precision | Inter-assay Precision | Inter-assay Precision |
| Sample | 1.00 | 2.00 | 3.00 | 1.00 | 2.00 | 3.00 |
| n | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 | 20.00 |
| Mean (pg/mL) | 196.88 | 406.01 | 1941.91 | 213.15 | 388.35 | 1806.50 |
| Standard deviation | 21.26 | 39.75 | 205.84 | 27.41 | 35.34 | 134.04 |
| CV (%) | 10.80 | 9.79 | 10.60 | 12.86 | 9.10 | 7.42 |
