Anti-OAS3 Antibody Picoband® Fluoro488 Conjugated

2'-5'-oligoadenylate synthetase 3 is an enzyme that in humans is encoded by the OAS3 gene. It is mapped to 12q24.13. This gene encodes an enzyme included in the 2', 5' oligoadenylate synthase family. This enzyme is induced by interferons and catalyzes the 2', 5' oligomers of adenosine in order to bind and activate RNase L. This enzyme family plays a significant role in the inhibition of cellular protein synthesis and viral infection resistance.

Interferon-induced, dsRNA-activated antiviral enzyme which plays a critical role in cellular innate antiviral response. In addition, it may also play a role in other cellular processes such as apoptosis, cell growth, differentiation and gene regulation. Synthesizes preferentially dimers of 2'-5'-oligoadenylates (2-5A) from ATP which then bind to the inactive monomeric form of ribonuclease L (RNase L) leading to its dimerization and subsequent activation. Activation of RNase L leads to degradation of cellular as well as viral RNA, resulting in the inhibition of protein synthesis, thus terminating viral replication. Can mediate the antiviral effect via the classical RNase L-dependent pathway or an alternative antiviral pathway independent of RNase L. Displays antiviral activity against Chikungunya virus (CHIKV), Dengue virus, Sindbis virus (SINV) and Semliki forest virus (SFV) .

1. Hovanessian, A. G., Laurent, A. G., Chebath, J., Galabru, J., Robert, N., Svab, J. Identification of 69-kd and 100-kd forms of 2-5A synthetase in interferon-treated human cells by specific monoclonal antibodies. EMBO J. 6: 1273-1280, 1987. 2. Hovnanian, A., Rebouillat, D., Mattei, M.-G., Levy, E. R., Marie, I., Monaco, A. P., Hovanessian, A. G. The human 2-prime,5-prime-oligoadenylate synthetase locus is composed of three distinct genes clustered on chromosome 12q24.2 encoding the 100-, 69-, and 40-kDa forms. Genomics 52: 267-277, 1998. 3. Lin, R.-J., Yu, H.-P., Chang, W.-C., Liao, C.-L., Lin, Y.-L. Distinct antiviral roles for human 2-prime,5-prime-oligoadenylate synthetase family members against Dengue virus infection. J. Immun. 183: 8035-8043, 2009.