Displacement of ferrous ion out of heme plane in oxygenated state of hemoglobin

Value 0.12 Angstrom
Organism Human Homo sapiens
Reference Fermi G, Perutz MF, Shaanan B, Fourme R. The crystal structure of human deoxyhaemoglobin at 1.74 A resolution. J Mol Biol. 1984 May 15 175(2):159-74PubMed ID6726807
Primary Source Shaanan B. Structure of human oxyhaemoglobin at 2.1 A resolution. J Mol Biol. 1983 Nov 25 171(1):31-59.PubMed ID6644819
Method The structure of human oxyhaemoglobin was determined by single crystal X-ray analysis at 2.1 A resolution. Data were collected on an Arndt-Wonacott camera at -2 degrees C. The structure was refined to an R factor of 0.223 by the Jack-Levitt method, starting from Baldwin's model of human carbon monoxide haemoglobin.
Comments The distance of the iron from the mean plane of N(porphyrin) is 0.40(5) A and 0.36(5) A, respectively, at the alpha and beta haems, in contrast to the corresponding distance of +0.12(8) A and -0.11(8) A in oxyhaemoglobin ( Shaanan , 1983). Figures in parentheses are standard deviations of last digit.
Entered by Uri M
ID 104202