Table 2. Analysis of the quaternary association in M20D proteases.

Name/PDB code	Quaternary arrangement	Buried surface area at the interface (Å2)	ΔG diss (kcal mol−1)
SACOL0085	Tetramer	15530	36.8
	Dimer AB	3920	6.2
	Dimer CD	3460	4.5
1ysj	Dimer	2630	3.9
1xmb	Monomer	—	—