2'-5'-oligoadenylate synthase

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2'-5'-oligoadenylate synthase

In molecular biology, 2'-5'-oligoadenylate synthetase (2-5A synthetase) is an enzyme (EC 2.7.7.84) that reacts to interferon signal. It is an antiviral enzyme that counteracts viral attack by degrading RNAs, both viral and host. The enzyme uses ATP in 2'-specific nucleotidyl transfer reactions to synthesize 2'-5'-oligoadenylates, which activate latent ribonuclease (RNase-L), resulting in degradation of viral RNA and inhibition of virus replication.[1]

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2'-5'-oligoadenylate synthetase
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Pig 2'-5'-oligoadenylate synthetase, N- and C-terminal domains coloured red and blue, respectively. PDB: 1PX5
Identifiers
SymbolOAS1_C
PfamPF10421
InterProIPR018952
Available protein structures:
Pfam  structures / ECOD  
PDBRCSB PDB; PDBe; PDBj
PDBsumstructure summary
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The C-terminal half of 2'-5'-oligoadenylate synthetase, also referred to as domain 2 of the enzyme, is largely alpha-helical and homologous to a tandem ubiquitin repeat. It carries the region of enzymatic activity between[clarification needed] at the extreme C-terminal end.[2]

Human proteins

See also

References

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