Table 2. Interaction surfaces between the α and β-subunits of MPP and between the β-subunit and the bound peptide substrate in MPP active site.

	α-MPP versus β-MPP		Substrate versus β-MPP
	Start value	End value	Start value	End value
WT	2110 Å2	1812 Å2	-	-
WT + substrate	2110 Å2	2336 Å2	886 Å2	886 Å2
ΔGRL MPP	1850 Å2	1907 Å2	-	-
ΔGRL MPP + substrate	1850 Å2	1428 Å2	886 Å2	861 Å2