TABLE 2.

Interacting surfaces in PhoPN and interactions at the protein-protein interface

Type of contacts	Surface A		Surface B
	Residue	Location	Residue	Location
Polar	K89	α4	K89 m.c. oxygena	α3
	T102	β5	K66	α3
	T102 m.c. oxygen	β5	K66	α3
	P104 m.c. oxygen	β5-α5	K66	α3
	E109	α5	K66	α3
	S106	β5-α5	E94	α4
	R108	α5	D88	β4-α4
	R113	α5	D60	α3
	R119	α5	D84 m.c. oxygen	β4-α4
Apolar	A112	α5	I62	α3
	A112	α5	L91	α4

^am.c. oxygen, main chain oxygen.