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OAS2 Antibody

OAS2 Polyclonal Antibody for IF, IHC, IP, WB, ELISA

Host / Isotype

Rabbit / IgG


human, mouse





Cat no : 19279-1-AP


(2 5)oligo(A) synthase 2, 2 5 oligoadenylate synthase 2, 2 5A synthase 2, OAS2, p69 OAS / p71 OAS, p69OAS / p71OAS

Tested Applications

Positive WB detected inJurkat cells, HL-60 cells, human liver tissue, mouse lung tissue
Positive IP detected inJurkat cells
Positive IHC detected inhuman breast cancer tissue, human colon tissue, human liver cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inHepG2 cells

Recommended dilution

Western Blot (WB)WB : 1:500-1:2000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for IP and 1:500-1:1000 for WB
Immunohistochemistry (IHC)IHC : 1:20-1:200
Immunofluorescence (IF)IF : 1:10-1:100
Sample-dependent, check data in validation data gallery

Product Information

The 19279-1-AP immunogen is Fusion Protein OAS2 protein expressed in E. coli.

Tested Reactivity human, mouse
Cited Reactivity human, mouse
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen OAS2 fusion protein Ag6170
Full Name 2'-5'-oligoadenylate synthetase 2, 69/71kDa
Calculated molecular weight 82 kDa
Observed molecular weight 66-71 kDa
GenBank accession number BC049215
Gene symbol OAS2
Gene ID (NCBI) 4939
Conjugate Unconjugated
Form Liquid
Purification Method Antigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage.

Background Information

The 2-prime,5-prime oligoadenylate synthetases (OASs), such as OAS2, are interferon-induced proteins characterized by their capacity to catalyze the synthesis of 2-prime,5-prime oligomers of adenosine (2-5As). OAS2 is also named as p69 OAS / p71 OAS. It has 3 isoforms(71/69/20 kDa) produced by alternative splicing. The OAS2 isozymes are 69–71 kDa and form dimers(PMID:17765707). Glycosylation is essential for its activity(PMID:9880569). Constitutive expression of the 69-kDa form of the OAS2 protein in human cells inhibited the replication of encephalomyocarditis virus (EMCV) but not that of VSV, Sendai virus, or reovirus(PMID:16501108). This antibody is specific to isoform p71 and isoform p69 of OAS2.


Product Specific Protocols
WB protocol for OAS2 antibody 19279-1-APDownload protocol
IHC protocol for OAS2 antibody 19279-1-APDownload protocol
IF protocol for OAS2 antibody 19279-1-APDownload protocol
IP protocol for OAS2 antibody 19279-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Biochem Cell Biol

Impact of double-stranded RNA characteristics on the activation of human 2'-5'-oligoadenylate synthetase 2 (OAS2).

Authors - Amit Koul

Sci Adv

IL-27 signaling activates skin cells to induce innate antiviral proteins and protects against Zika virus infection.

Authors - Jeffery T Kwock

PLoS One

Spleen Tyrosine Kinase (Syk) Regulates Systemic Lupus Erythematosus (SLE) T Cell Signaling.

Authors - Grammatikos Alexandros P AP
  • KD Validated

Am J Physiol Lung Cell Mol Physiol

Cartilage rings contribute to the proper embryonic tracheal epithelial differentiation, metabolism, and expression of inflammatory genes.

Authors - Gianluca Turcatel

J Virol

Influenza Virus NS1 Protein RNA-Interactome Reveals Intron Targeting.

Authors - Liang Zhang

Front Immunol

Docosahexaenoic Acid Consumption Impedes Early Interferon- and Chemokine-Related Gene Expression While Suppressing Silica-Triggered Flaring of Murine Lupus.

Authors - Abby D Benninghoff