Figure 5
Three suggested ways of interaction between GluRS-N and Arc1p-N. (a) Stereo representation of GluRS-N (blue/yellow) superimposed on conformer 1 (brown) of a Arc1p-N tetramer (color coding as in Fig. 3 b and 4 ). Segments of GluRS-N corresponding to the interfacing elements of the E. coli GST homodimer are coloured yellow. (b) Analysis of GluRS-N surface conservation does not yield clues as to which area is likely to be involved in the GluRS-N–Arc1p-N interaction. Surface representations of GluRS-N are coloured in a white to green gradient corresponding to 10–90% sequence conservation (scoring by the Risler matrix; Risler et al., 1988 ). The three views represent the three possible modes of interaction and are oriented and centred on the respective putative interface area: GST homodimer-like interaction (left), interaction corresponding to that indicated in (a) between GluRS-N and the grey Arc1p-N monomer (middle) and interaction corresponding to that indicated in (a) between GluRS-N and the green Arc1p-N monomer (right). |