Antagonizes the binding of 2-5A (5'-phosphorylated 2',5'-linked oligoadenylates) by RNase L through direct interaction with RNase L and therefore inhibits its endoribonuclease activity. May play a central role in the regulation of mRNA turnover. Antagonizes the anti-viral effect of the interferon-regulated 2-5A/RNase L pathway. May act as a chaperone for post-translational events during HIV-1 capsid assembly.
Belongs to the ABC transporter superfamily. ABCE family. Contains 2 4Fe-4S ferredoxin-type domains. Contains 2 ABC transporter domains.
Cytoplasm. Mitochondrion. Localized to clusters of virus formation at the plasma membrane.