Trp-tRNA synthetase (TrpRS) has a well-understood role in translation by facilitating aminoacylation of Trp-tRNAs. The discovery of a nuclear signaling role for TrpRS as a bridging protein for DNA-PK and PARP-1, resulting in p53 activation, explains a previously curious link between interferon-γ signaling and concomitant TrpRS overexpression.
- Mathew Sajish
- Quansheng Zhou
- Paul Schimmel