Table 1. Heme deviations from planarity.
| rms deviation* | Saddling† | Ruffling† | |
|---|---|---|---|
| H-NOX | |||
| Orthorhombic | |||
| Heme A | 0.45 | -1.092 | -1.094 |
| Heme B | 0.44 | -0.994 | -1.210 |
| Monoclinic | |||
| Heme A | 0.46 | -1.069 | -1.105 |
| Heme B | 0.33 | -0.634 | -0.814 |
| Cytochrome c3 | 0.36 | 1.034 | -0.429 |
| Peroxidase | 0.33 | -0.905 | -0.660 |
| Nitrophorin | 0.26 | 0.356 | -0.843 |
| Deoxy-FixL | 0.26 | 0.597 | -0.375 |
| Oxy-FixL | 0.19 | 0.438 | -0.323 |
| Oxy-Myoglobin | 0.12 | 0.185 | 0.011 |
RCSB protein data bank codes: Cytochrome c3, 2CDV heme 1 (38); peroxidase, 1ARP (39); nitrophorin, 1ERX (40); deoxy-FixL, 1DRM (8); oxy-FixL, 1DP6 (5); oxy-myoglobin, 1A6M (41).
*
rms deviation from planarity angstroms.
†
Heme distortions calculated using normal-coordinate analysis (37). The numerical value shown is the displacement along the normal mode in angstroms.