Fig. 5. Interaction of 35S–labelled KvLQT1 C–termini with each other. cRNAs encoding Xpress-labelled (xC.T.354–676) or myc-labelled (mycC.T.354–676) KvLQT1 C–termini (see Figure 4A) were co-translated in vitro (co) or were translated in separate experiments and mixed afterwards (mix). Then they were precipitated either with anti-Xpress antibodies (anti-Xpress) or with anti-myc antibodies (anti-myc). Precipitates were analysed by SDS–PAGE followed by autoradiography. Molecular weight markers are on the left.