Stereochemistry of iron in deoxyhaemoglobin.
The EXAFS of human deoxyhaemoglobin closely resembles that of a synthetic model in which the displacement of the iron from the mean porphyrin plane is 0.426 +/- 0.004 A, similar to the displacement of 0.56 +/- 0.03 A found by single crystal X-ray analysis of deoxyhaemoglobin. We find the same Fe-N of 2.06 +/- 0.01 A distance as Eisenberger et al., but show that the displacement of the iron from the nitrogen plane cannot be calculated from that distance.
D004577:Electron Probe Microanalysis / Q000379:methods; D005583:Fourier Analysis; D006454:Hemoglobins; D006801:Humans; D007501:Iron / Q000032:analysis*; D011485:Protein Binding; D011487:Protein Conformation; D014961:X-Ray Diffraction
D006454:Hemoglobins; C100003:deoxyhemoglobin; D007501:Iron