Changes in Fe site structure from fetal to adult hemoglobin probed by XANES.
Iron X-ray absorption near edge structure (XANES) spectra of human fetal (F) and adult (A) deoxyhemoglobin (deoxyHb) measured at the Frascati synchrotron radiation facility reveal the different geometrical structure of the Fe-porphyrin complexes in the two proteins. By this method, having determined for the first time the variation of atomic positions in fetal and adult hemoglobin in solution (close to the 'in vivo' situation), we give further insight into the structure-function relationship in hemoglobins.
A
A
Bianconi
A
A
Congiu-Castellano
M
M
Dell'Ariccia
A
A
Giovannelli
E
E
Burattini
M
M
Castagnola
P J
PJ
Durham
D005319:Fetal Hemoglobin; D006441:Hemoglobin A; D006454:Hemoglobins; D006801:Humans; D007501:Iron; D013057:Spectrum Analysis; D014965:X-Rays
D006454:Hemoglobins; C100003:deoxyhemoglobin; D006441:Hemoglobin A; D005319:Fetal Hemoglobin; D007501:Iron