The human gene is found on the short arm of Chromosome 1 near the telomere (1p36.13). It is located on the Watson (plus) strand and is 55,806 bases long. The protein is 663 amino acids long with a molecular weight of 74,095 Da.[1]
Function
This gene is a member of a gene family which encodes enzymes responsible for the conversion of arginine to citrulline residues. This gene may play a role in granulocyte and macrophage development leading to inflammation and immune response.[2] PADI4 plays a role in the epigenetics, the deimination of arginines on histones 3 and 4 can act antagonistically to arginine methylation (Chromatin modifications and their function, Kouzarides 2007, Cell, review)
The protein may be found in oligomers and binds 5 calcium ions per subunit. It catalyses the reaction:
Protein L-arginine + H2O = protein L-citrulline + NH3
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Asaga H, Nakashima K, Senshu T, et al. (2001). "Immunocytochemical localization of peptidylarginine deiminase in human eosinophils and neutrophils". J. Leukoc. Biol. 70 (1): 46–51. PMID11435484.
Nakashima K, Hagiwara T, Yamada M (2003). "Nuclear localization of peptidylarginine deiminase V and histone deimination in granulocytes". J. Biol. Chem. 277 (51): 49562–8. doi:10.1074/jbc.M208795200. PMID12393868.
Suzuki A, Yamada R, Chang X, et al. (2003). "Functional haplotypes of PADI4, encoding citrullinating enzyme peptidylarginine deiminase 4, are associated with rheumatoid arthritis". Nat. Genet. 34 (4): 395–402. doi:10.1038/ng1206. PMID12833157.
Barton A, Bowes J, Eyre S, et al. (2004). "A functional haplotype of the PADI4 gene associated with rheumatoid arthritis in a Japanese population is not associated in a United Kingdom population". Arthritis Rheum. 50 (4): 1117–21. doi:10.1002/art.20169. PMID15077293.
Chavanas S, Méchin MC, Takahara H, et al. (2004). "Comparative analysis of the mouse and human peptidylarginine deiminase gene clusters reveals highly conserved non-coding segments and a new human gene, PADI6". Gene. 330: 19–27. doi:10.1016/j.gene.2003.12.038. PMID15087120.
Arita K, Hashimoto H, Shimizu T, et al. (2004). "Structural basis for Ca(2+)-induced activation of human PAD4". Nat. Struct. Mol. Biol. 11 (8): 777–83. doi:10.1038/nsmb799. PMID15247907.
Hoppe B, Heymann GA, Tolou F, et al. (2005). "High variability of peptidylarginine deiminase 4 (PADI4) in a healthy white population: characterization of six new variants of PADI4 exons 2-4 by a novel haplotype-specific sequencing-based approach". J. Mol. Med. 82 (11): 762–7. doi:10.1007/s00109-004-0584-6. PMID15338034.
Nakayama-Hamada M, Suzuki A, Kubota K, et al. (2005). "Comparison of enzymatic properties between hPADI2 and hPADI4". Biochem. Biophys. Res. Commun. 327 (1): 192–200. doi:10.1016/j.bbrc.2004.11.152. PMID15629448.
Kearney PL, Bhatia M, Jones NG, et al. (2005). "Kinetic characterization of protein arginine deiminase 4: a transcriptional corepressor implicated in the onset and progression of rheumatoid arthritis". Biochemistry. 44 (31): 10570–82. doi:10.1021/bi050292m. PMID16060666.
Ikari K, Kuwahara M, Nakamura T, et al. (2005). "Association between PADI4 and rheumatoid arthritis: a replication study". Arthritis Rheum. 52 (10): 3054–7. doi:10.1002/art.21309. PMID16200584.
Chang X, Han J (2006). "Expression of peptidylarginine deiminase type 4 (PAD4) in various tumors". Mol. Carcinog. 45 (3): 183–96. doi:10.1002/mc.20169. PMID16355400.