Aminoacyl tRNA synthetase complex-interacting multifunctional protein 1 is a protein that in humans is encoded by the AIMP1gene.[1][2][3]
The protein encoded by this gene is a cytokine that may be induced by apoptosis and is also released from professional antigen-presenting cells such as dendritic cells. The release of this cytokine renders the tumor-associated vasculature sensitive to tumor necrosis factor. The precursor of SCYE1 (pro-SCYE1) is identical to the p43 subunit, which is associated with the multiaminoacyl-tRNA synthetase complex (mARS). Pro-SCYE1 may function in binding RNA as part of the tRNA synthetase complex in normal cells and in stimulating inflammatory responses after proteolytic cleavage in tumor cells.[3] As an inflammatory cytokine, AIMp1/p43 has demonstrated the ability to skew T-helper polarization in the direction of Th-1, and its homozygous deletion leads to a hyper-polarized Th-2 phenotype.
↑Kao J, Houck K, Fan Y, Haehnel I, Libutti SK, Kayton ML, Grikscheit T, Chabot J, Nowygrod R, Greenberg S, et al. (Nov 1994). "Characterization of a novel tumor-derived cytokine. Endothelial-monocyte activating polypeptide II". J Biol Chem. 269 (40): 25106–19. PMID7929199.
↑Kao J, Fan YG, Haehnel I, Brett J, Greenberg S, Clauss M, Kayton M, Houck K, Kisiel W, Seljelid R, et al. (May 1994). "A peptide derived from the amino terminus of endothelial-monocyte-activating polypeptide II modulates mononuclear and polymorphonuclear leukocyte functions, defines an apparently novel cellular interaction site, and induces an acute inflammatory response". J Biol Chem. 269 (13): 9774–82. PMID7545917.
↑Lee, Yeon Sook; Han Jung Min; Son Sung Hwa; Choi Jin Woo; Jeon Eun Ju; Bae Suk-Chul; Park Young In; Kim Sunghoon (Jul 2008). "AIMP1/p43 downregulates TGF-beta signaling via stabilization of smurf2". Biochem. Biophys. Res. Commun. United States. 371 (3): 395–400. doi:10.1016/j.bbrc.2008.04.099. PMID18448069.
Further reading
Kao J, Ryan J, Brett G, et al. (1992). "Endothelial monocyte-activating polypeptide II. A novel tumor-derived polypeptide that activates host-response mechanisms". J. Biol. Chem. 267 (28): 20239–47. PMID1400342.
Quevillon S; Agou F; Robinson JC; Mirande M (1998). "The p43 component of the mammalian multi-synthetase complex is likely to be the precursor of the endothelial monocyte-activating polypeptide II cytokine". J. Biol. Chem. 272 (51): 32573–9. doi:10.1074/jbc.272.51.32573. PMID9405472.
Quevillon S, Robinson JC, Berthonneau E, et al. (1999). "Macromolecular assemblage of aminoacyl-tRNA synthetases: identification of protein-protein interactions and characterization of a core protein". J. Mol. Biol. 285 (1): 183–95. doi:10.1006/jmbi.1998.2316. PMID9878398.
Park SG, Jung KH, Lee JS, et al. (1999). "Precursor of pro-apoptotic cytokine modulates aminoacylation activity of tRNA synthetase". J. Biol. Chem. 274 (24): 16673–6. doi:10.1074/jbc.274.24.16673. PMID10358004.
Kim Y, Shin J, Li R, et al. (2000). "A novel anti-tumor cytokine contains an RNA binding motif present in aminoacyl-tRNA synthetases". J. Biol. Chem. 275 (35): 27062–8. doi:10.1074/jbc.C000216200. PMID10852899.
Shalak V, Kaminska M, Mitnacht-Kraus R, et al. (2001). "The EMAPII cytokine is released from the mammalian multisynthetase complex after cleavage of its p43/proEMAPII component". J. Biol. Chem. 276 (26): 23769–76. doi:10.1074/jbc.M100489200. PMID11306575.
Chang SY; Park SG; Kim S; Kang CY (2002). "Interaction of the C-terminal domain of p43 and the alpha subunit of ATP synthase. Its functional implication in endothelial cell proliferation". J. Biol. Chem. 277 (10): 8388–94. doi:10.1074/jbc.M108792200. PMID11741979.
Battersby S; Boddy SC; Critchley HO; Jabbour HN (2002). "Expression and localization of endothelial monocyte-activating polypeptide II in the human endometrium across the menstrual cycle: regulation of expression by prostaglandin E(2)". J. Clin. Endocrinol. Metab. 87 (8): 3928–35. doi:10.1210/jc.87.8.3928. PMID12161535.
Park H, Park SG, Kim J, et al. (2003). "Signaling pathways for TNF production induced by human aminoacyl-tRNA synthetase-associating factor, p43". Cytokine. 20 (4): 148–53. doi:10.1006/cyto.2002.1992. PMID12543078.
Ahn HC; Kim S; Lee BJ (2003). "Solution structure and p43 binding of the p38 leucine zipper motif: coiled-coil interactions mediate the association between p38 and p43". FEBS Lett. 542 (1–3): 119–24. doi:10.1016/S0014-5793(03)00362-4. PMID12729910.
Kim MJ, Park BJ, Kang YS, et al. (2003). "Downregulation of FUSE-binding protein and c-myc by tRNA synthetase cofactor p38 is required for lung cell differentiation". Nat. Genet. 34 (3): 330–6. doi:10.1038/ng1182. PMID12819782.
Mueller CA, Schluesener HJ, Conrad S, et al. (2004). "Spinal cord injury induces lesional expression of the proinflammatory and antiangiogenic cytokine EMAP II". J. Neurotrauma. 20 (10): 1007–15. doi:10.1089/089771503770195858. PMID14588117.
Murray JC, Symonds P, Ward W, et al. (2004). "Colorectal cancer cells induce lymphocyte apoptosis by an endothelial monocyte-activating polypeptide-II-dependent mechanism". J. Immunol. 172 (1): 274–81. doi:10.4049/jimmunol.172.1.274. PMID14688335.
Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID14702039.
Murray JC, Heng YM, Symonds P, et al. (2004). "Endothelial monocyte-activating polypeptide-II (EMAP-II): a novel inducer of lymphocyte apoptosis". J. Leukoc. Biol. 75 (5): 772–6. doi:10.1189/jlb.1003487. PMID14982944.
