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The Human 2',5'-Oligoadenylate Synthetase Family: Interferon-Induced Proteins with Unique Enzymatic Properties

Rebouillat, Dominique, Hovanessian, Ara G.·1999·Journal of Interferon & Cytokine Research

Abstract

2',5'-Oligoadenylate synthetase (2',5'-OAS) was discovered and characterized as an interferon (IFN)-induced enzyme that in the presence of double-stranded (ds) RNA converts ATP into 2',5'-linked oligomers of adenosine with the general formula pppA(2'p'A)n, n > or = 1. The product is pppG2'p5'G when GTP is used as a substrate. Now, 20 years later, this activity is attributed to several well-characterized, homologous, and IFN-induced proteins in human cells. Three distinct forms of 2',5'-OAS exist, small, medium, and large, which contain 1, 2, and 3 OAS units, respectively, and are encoded by distinct genes clustered on the 2',5'-OAS locus on human chromosome 12. Recently, other IFN-induced proteins homologous to the OAS unit but devoid of the typical 2',5'-OAS catalytic activity have been described. These OAS-related proteins are encoded by a gene located at the proximity of the 2',5'-OAS locus. These findings illustrate the apparent structural and functional complexity of the human 2',5'-OAS family.

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Metadata

Authors
Rebouillat, D., & Hovanessian, A. G.
Venue
Journal of Interferon & Cytokine Research
Published
1999-04
Volume
19
Issue
4
Pages
295-308
ISSN
  • 1079-9907 (ISSN-L)
  • 1557-7465
OpenAlex
W2120696122
Cited by
232
References
0
FWCI
5.02
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: The Human 2',5'-Oligoadenylate Synthetase Family: Interferon-Induced Proteins with Unique Enzymatic Properties. https://app.cochat.ai/papers/10.1089/107999099313992
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Rebouillat, D., & Hovanessian, A. G. (1999). The Human 2',5'-Oligoadenylate Synthetase Family: Interferon-Induced Proteins with Unique Enzymatic Properties. Journal of Interferon & Cytokine Research. https://doi.org/10.1089/107999099313992

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