Details of three major clusters in the network linking the TAP and HMS complexes with annotated regulons (Figure 3). Individual complexes are identified by their alphanumerical code as in Figure 3 and depicted by ellipsoid frames, whereas regulons are denoted by the name of the bound transcription factor and depicted as rectangles. Individual complexes and regulons appear in different colors in a given cluster. Genes involved in complexes or regulons are enclosed by frames as in Figure 1. (a) Yeast proteasome cluster; (b) ribonucleoside diphosphate reductase cluster; (c) histone cluster.