OAS2

2'-5'-oligoadenylate synthetase 2, 69/71kDa
Identifiers
Symbols	OAS2; MGC78578
External IDs	OMIM: 603350 MGI: 2180852 HomoloGene: 49478 GeneCards: OAS2 Gene
EC number	2.7.7.-
Gene Ontology Molecular function • nucleotide binding • RNA binding • ATP binding • transferase activity • nucleotidyltransferase activity Cellular component • nucleus • mitochondrion • endoplasmic reticulum • microsome • membrane Biological process • nucleobase, nucleoside, nucleotide and nucleic acid metabolic process • immune response • cytokine-mediated signaling pathway • interferon-gamma-mediated signaling pathway • type I interferon-mediated signaling pathway Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	4939	246728
Ensembl	ENSG00000111335	ENSMUSG00000032690
UniProt	P29728	n/a
RefSeq (mRNA)	NM_001032731.1	NM_145227.3
RefSeq (protein)	NP_001027903.1	NP_660262.2
Location (UCSC)	Chr 12: 113.42 – 113.45 Mb	Chr 5: 121.18 – 121.2 Mb
PubMed search	[1]	[2]

2'-5'-oligoadenylate synthetase 2 is an enzyme that in humans is encoded by the OAS2 gene.

This gene encodes a member of the 2-5A synthetase family, essential proteins involved in the innate immune response to viral infection. The encoded protein is induced by interferons and uses adenosine triphosphate in 2'-specific nucleotidyl transfer reactions to synthesize 2',5'-oligoadenylates (2-5As). These molecules activate latent RNase L, which results in viral RNA degradation and the inhibition of viral replication. The three known members of this gene family are located in a cluster on chromosome 12. Alternatively spliced transcript variants encoding different isoforms have been described.

Further reading

• Justesen J, Hartmann R, Kjeldgaard NO (2000). "Gene structure and function of the 2'-5'-oligoadenylate synthetase family". Cell. Mol. Life Sci. 57 (11): 1593–1612. doi:10.1007/PL00000644. PMID 11092454. 
• Marié I, Hovanessian AG (1992). "The 69-kDa 2-5A synthetase is composed of two homologous and adjacent functional domains". J. Biol. Chem. 267 (14): 9933–9. PMID 1577824. 
• Silverman RH, Sengupta DN (1991). "Translational regulation by HIV leader RNA, TAT, and interferon-inducible enzymes". J. Exp. Pathol. 5 (2): 69–77. PMID 1708818. 
• Marié I, Svab J, Robert N et al (1990). "Differential expression and distinct structure of 69- and 100-kDa forms of 2-5A synthetase in human cells treated with interferon". J. Biol. Chem. 265 (30): 18601–7. PMID 2211721. 
• Hovanessian AG, Laurent AG, Chebath J et al (1987). "Identification of 69-kd and 100-kd forms of 2-5A synthetase in interferon-treated human cells by specific monoclonal antibodies". EMBO J. 6 (5): 1273–80. PMC 553929. PMID 2440675. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=553929. 
• Marié I, Galabru J, Svab J, Hovanessian AG (1989). "Preparation and characterization of polyclonal antibodies specific for the 69 and 100 k-dalton forms of human 2-5A synthetase". Biochem. Biophys. Res. Commun. 160 (2): 580–587. doi:10.1016/0006-291X(89)92472-8. PMID 2470369. 
• Hovanessian AG, Svab J, Marié I et al (1988). "Characterization of 69- and 100-kDa forms of 2-5A-synthetase from interferon-treated human cells". J. Biol. Chem. 263 (10): 4945–9. PMID 3350819. 
• Solinas A, Cossu P, Poddighe P et al (1994). "Changes of serum 2',5'-oligoadenylate synthetase activity during interferon treatment of chronic hepatitis C". Liver 13 (5): 253–8. PMID 8259037. 
• Besse S, Rebouillat D, Marie I et al (1998). "Ultrastructural localization of interferon-inducible double-stranded RNA-activated enzymes in human cells". Exp. Cell Res. 239 (2): 379–392. doi:10.1006/excr.1997.3908. PMID 9521856. 
• Sarkar SN, Ghosh A, Wang HW et al (1999). "The nature of the catalytic domain of 2'-5'-oligoadenylate synthetases". J. Biol. Chem. 274 (36): 25535–25542. doi:10.1074/jbc.274.36.25535. PMID 10464285. 
• Strausberg RL, Feingold EA, Grouse LH et al (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–16903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=139241. 
• Gerhard DS, Wagner L, Feingold EA et al (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–2127. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=528928. 
• Scherer SE, Muzny DM, Buhay CJ et al (2006). "The finished DNA sequence of human chromosome 12". Nature 440 (7082): 346–351. doi:10.1038/nature04569. PMID 16541075.