| 16 transmembrane subunits |
| A - Tilt: 5° - Segments: 1(252-274) |
| B - Tilt: 22° - Segments: 1(32-53), 2(84-107), 3(115-134), 4(185-207) |
| D - Tilt: 7° - Segments: 1(35-57), 2(95-115), 3(127-147) |
| R - Tilt: 26° - Segments: 1(44-66) |
| L - Tilt: 37° - Segments: 1(2-25) |
| N - Tilt: 13° - Segments: 1(74-95) |
| G - Tilt: 11° - Segments: 1(5-25) |
| M - Tilt: 33° - Segments: 1(66-88) |
| S - Tilt: 23° - Segments: 1(32-53), 2(84-107), 3(115-134), 4(185-207) |
| T - Tilt: 5° - Segments: 1(35-57), 2(95-115), 3(127-146) |
| U - Tilt: 27° - Segments: 1(44-66) |
| V - Tilt: 3° - Segments: 1(252-274) |
| X - Tilt: 12° - Segments: 1(5-26) |
| Y - Tilt: 11° - Segments: 1(75-95) |
| Z - Tilt: 37° - Segments: 1(2-26) |
| P - Tilt: 35° - Segments: 1(66-91) |