| 13 transmembrane subunits |
| A - Tilt: 5° - Segments: 1(4-26), 2(46-68) |
| B - Tilt: 4° - Segments: 1(4-26), 2(46-68) |
| C - Tilt: 5° - Segments: 1(4-26), 2(46-68) |
| D - Tilt: 4° - Segments: 1(4-26), 2(46-68) |
| E - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| F - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| G - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| H - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| I - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| J - Tilt: 4° - Segments: 1(3-26), 2(46-68) |
| K - Tilt: 5° - Segments: 1(4-26), 2(46-68) |
| L - Tilt: 5° - Segments: 1(4-26), 2(46-68) |
| M - Tilt: 5° - Segments: 1(4-26), 2(46-68) |