Abstract
The distinctions of the solvent-proton longitudinal magnetic relaxation (PMES.) mechanisms between high-spin ferric aquo and fluoro complexes of some haemoproteins are discussed here. It becomes apparent that the "transition" from the exchange-limited PMR to the fast-exchange PMR mechanism upon addition of fluoride to some of the aquocomplexes is due to a more intense solvent-dynamics in the vicinity of the paramagnetic haem in the fluoromet derivatives This can be rationalized by a conformational change induced by the fluoride ion, an effect not observed by X-ray analysis thus far. A possible mechanism of this change is indicated here.
Original language | English (US) |
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Pages (from-to) | 395-398 |
Number of pages | 4 |
Journal | Biophysical Chemistry |
Volume | 5 |
Issue number | 3 |
DOIs | |
State | Published - Sep 1976 |
ASJC Scopus subject areas
- Biophysics
- Biochemistry
- Organic Chemistry