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XANES study of iron displacement in the haem of myoglobin |
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| Authors: | A Bianconi A Congiu-Castellano M Dell'Ariccia A Giovannelli P J Durham E Burattini M Barteri |
| Affiliation: | 1. Dipartimento di Fisica, Università di Roma ‘La Sapienza’, 00185 Roma, Italy;2. SERC, Daresbury Laboratory, Daresbury, Warrington, WA4 4AD, England;3. CNR-INFN, Laboratori Nazionali di Frascati, 00044 FrascatiItaly;4. Dipartimento di Chimica, Università di Roma La Sapienza, 00185 Roma, Italy |
| Abstract: | The XANES (X-ray absorption near edge structure) spectra of deoxy human adult haemoglobin (HbA) and myoglobin (Mb) have been measured at the wiggler beam line of the Frascati synchrotron radiation facility. The XANES are interpreted by the multiple scattering cluster theory. The variations in the XANES between HbA and Mb are assigned to changes in the Fe-porphyrin geometry. |
| Keywords: | Myoglobin Hemoglobin XANES X-ray absorption Synchrotron radiation Heme structure |
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