|  | Aromatic/arginine selectivity filterc |  | |||
---|---|---|---|---|---|---|
Plant MIP subfamilya | Number of sequences/Total number of sequencesb | TM2 | TM5 | LE1 | LE2 | NPA substitutions (%)d |
TIPse | 90/181 | H | I/V/M | A/G/S | R | 1.1 |
 | 65/181 | H | I/V | A | V/L/I |  |
 | 16/181 | H/Q/N | T/S/A | A | R |  |
 | 5/181 | Q | V | A | R |  |
 | 3/181 | H | V | G | C |  |
SIPsf | 13/25 | V/F/I/L | V/I | P | N | 84.0 |
 | 6/25 | S/T/Y | H | G | S/A |  |
 | 3/25 | I/V | V/F | P | I/F |  |
 | 3/25 | A/S | V | P | N |  |