Figure 1
From: Exploring the evolution of protein function in Archaea
The structural census of the archaeal COGs. Venn diagram that shows the intersections of the sets of SCOP folds corresponding to the core (222/222 found in LACA), shell (468/370), and orphan (502/305) groups of arCOGs. For core only (45), shell only (108), orphans only (144), as well for the omnipresent set (139, the intersection in the middle of the diagram) ten folds are exemplified by their SCOP IDs and fold names. The complete sets of folds are given in Additional File 1.