The VZV ORF20 RHIM forms heteromeric complexes with RHIMs from RIPK3 and ZBP1.

(A) Schematic representation of fluorescence detection from dilute solutions containing two different fluorophores in a nanolitre confocal volume. Samples are excited simultaneously with two overlapping lasers and emission from the YPet and mCherry fluorophores is recorded separately. Coincident bursts in the two channels indicate formation of heteromeric complexes containing two different proteins (B-I). Representative fluorescent time traces collected from ORF20_1-114-mCherry, ORF20_1-114mut-mCherry, YPet-RIPK3_387-518 or YPet-ZBP1_170-355 fusion proteins, alone or mixed in pairs under conditions that allow co-assembly. The proteins present in each mixture are indicated for each part of the figure. Inserts show detail of 1 s dual fluorescence recording, indicated by star on the full time trace.