Table I.
AQPs of maizea
| Nameb | Accession No. | No. of Amino Acids |
|---|---|---|
| ZmPIP1-1 (ZmPIP1a) | X82633 | 288 |
| ZmPIP1-2 (ZmPIP1b) | AF131201 | 289 |
| ZmPIP1-3 | AF326487 | 292 |
| ZmPIP1-4 | AF326488 | 292 |
| ZmPIP1-5 | AF326489 | 288 |
| ZmPIP1-6 | AF326490 | 296 |
| ZmPIP2-1 | AF326491 | 290 |
| ZmPIP2-2 | AF326492 | 292 |
| ZmPIP2-3 | AF326493 | 289 |
| ZmPIP2-4 | AF326494 | 288 |
| ZmPIP2-5 (ZmPIP2a)c | AF130975 | 290 |
| ZmPIP2-6 | AF326495 | 288 |
| ZmPIP2-7 | AF326496 | 287 |
| ZmTIP1-1 (ZmTIP1)c | AF037061 | 250 |
| ZmTIP1-2 | AF326500 | 254 |
| ZmTIP2-1 | AF326501 | 249 |
| ZmTIP2-2 | AF326502 | 250 |
| ZmTIP2-3 | AF326503 | 247 |
| ZmTIP3-1 | AF326504 | 262 |
| ZmTIP4-1 | AF326505 | 255 |
| ZmTIP4-2 | AF326506 | 257 |
| ZmTIP4-3 | AF326507 | 249 |
| ZmTIP4-4 | AF326508 | 252 |
| ZmTIP5-1 | AF326509 | 260 |
| ZmSIP1-1 | AF326497 | 245 |
| ZmSIP1-2 | AF326498 | 243 |
| ZmSIP2-1 | AF326499 | 249 |
| ZmNIP1-1 | AF326483 | 282 |
| ZmNIP2-1 | AF326484 | 294 |
| ZmNIP2-2 | AF326485 | 295 |
| ZmNIP3-1 | AF326486 | 302 |
a
After the revision of this paper was accepted, we succeeded in cloning full-length cDNAs of two other maize AQPs. Their sequences have been submitted to GenBank and are: ZmTIP3-2 (accession no. AF342809) and ZmNIP2-3 (accession no. A342810). The nos. reflect their sequence identity to existing AQPs on a cladogram.
b
The previous published names are in parentheses (Chaumont et al., 1998, 2000).
c
These are the only two maize AQPs that have been shown to have good water channel activity in oocytes. ZmPIP1-1 and ZmPIP1-2 were inactive and the others have been tested.