Table 2.

The amino acid residues, given in three-letter codes, lining pores of the EcHKT1;2, OsHKT1;5 and VpTrkH transporters. The predicted selectivity filter residues are underlined.

Protein	Accession number	Pore residues 1							Residue number
EcHKT1;2	AF176036_1	Thr	Thr	Val	Ser	Ser	Met	Ser	91–97
		Ala	Ser	Cys	Gly	Phe	Val	Pro	259–265
		Arg	His	Thr	Gly	Glu	Thr	Val	383–389
		Gly	Asn	Val	Gly	Phe	Thr	Thr	488–494
OsHKT1;5	A2WNZ9.2	Thr	Val	Ser	Ser	Met	Val	Ala	73–79
		Ala	Asn	Cys	Gly	Phe	Val	Pro	261–267
		Arg	His	Ser	Gly	Glu	Met	Val	388–394
		Gly	Asn	Val	Gly	Phe	Ser	Thr	492–498
VpTrkH	Q87TN7.1	Thr	Thr	Thr	Gly	Ala	Thr	Val	110–116
		Ala	Ile	Gly	Gly	Phe	Ser	Thr	219–225
		Thr	Thr	Ala	Gly	Phe	Thr	Thr	319–325
		Asn	Asn	Leu	Gly	Pro	Gly	Leu	436–442

¹Residues are coloured according to conservation predictions analysed by the ConSurf server [81].