This COVID-19 event has been created by a combination of computational inference (see https://reactome.org/documentation/inferred-events) from SARS-CoV-1 data and manual curation, as described in the summation for the overall SARS-CoV-2 infection pathway.

Non-structural protein 14 (nsp14) of the human SARS coronavirus is a bifunctional enzyme bearing 3'-5 exoribonuclease activity involved in replication fidelity and RNA cap N7-guanine methyltransferase activity involved in 5'-RNA capping. nsp14 binds to the minimal replication and transcription complex (RTC), composed of nsp7, nsp8, and nsp12, by directly binding to nsp12 (the main RNA-dependent RNA polymerase). Binding of nsp14 does not affect the processivity of the RTC (Minskaia et al. 2006, Subissi et al. 2014).