MÖSSBAUER SPECTROSCOPIC STUDIES OF IRON-SULPHUR PROTEINS WITH FOUR-IRON ACTIVE CENTRES

摘要

A large class of iron-sulphur proteins have active centres containing four iron atoms. Mössbauer spectra obtained from four members of this group show a common pattern of behaviour. A complete theoretical understanding of these spectra requires computer fitting using a suitable Hamiltonian. Good fits have been obtained for the spectra of both redox states of Bacillus stearothermophilus ferredoxin obtained in a range of temperatures and applied magnetic fields.