The X-ray crystal structure of the Lymphocytic choriomeningitis virus
nucleoprotein C-terminal immunosuppressive domain (LCMV NPΔ340) was determined
to 2.0 Å resolution. The structure indicates that LCMV NPΔ340, like the
other structurally characterized arenaviral nucleoproteins, adopts the fold of
an exonuclease. This structure provides a crucial three-dimensional template for
functional exploration of the replication and immunosuppression of this
prototypic arenavirus.