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Interferons induce accumulation of diadenosine triphosphate (Ap3A) in human cultured cells
A Vartanian1, A Narovlyansky, A Amchenkova
1Engelhardt Institute of Molecular Biology, Russian Academy Sciences, Moscow, Russia.
FEBS Letters
|February 26, 1996
Abstract:
After incubation of human monocytes J96 and human myeloid leukemia HL60 cells with interferons (IFN) alpha or gamma, the Ap3A concentration considerably increases in parallel with accumulation of tryptophanyl-tRNA synthetase (TrpRS, EC 6.1.1.2). The Ap3A formation in response to IFNs is catalysed by an excessive amount of TrpRS. Although the Ap3A function still remains unknown, its accumulation may imply the Ap3A involvement in the IFN-signalling pathway.