Figure 1: Four-way Venn diagram of orthologous genes calculated by reciprocal hits.
From: High hydrostatic pressure adaptive strategies in an obligate piezophile Pyrococcus yayanosii
P. yayanosii (yellow), P. furiosus (green), P. horikoshii (blue) and P. abyssi (purple). Numbers shown in the Venn diagram correspond to the orthologous gene groups given in the respective patterns. arCOG categories represent the information storage and processing (orange palette), cellular processes and signaling (green palette), metabolism (blue palette) and poorly characterized genes (grey palette).
