Table 1.

ar/R selectivity filters and Froger’s residues of five Pinus contorta aquaporins.

Aquaporin	ar/R Selectivity Filter				Froger’s Positions (P1–P5)
	H2	H5	Loop E1	Loop E2	P1	P2	P3	P4	P5
PiconPIP2;1	F	H	T	R	Q	S	A	F	W
PiconPIP2;2	F	H	T	R	Q	S	A	F	W
PiconPIP2;3	F	H	T	R	Q	S	A	F	W
PiconPIP1;2	F	H	T	R	Q	S	A	F	W
PiconTIP1;1	H	I	A	R	T	A	A	Y	W