| Literature DB >> 265510 |
M Cerdonio, A Congiu-Castellano, F Mogno, B Pispisa, G L Romani, S Vitale.
Abstract
When the magnetic susceptibility of frozen aqueous solutions of human oxyhemoglobin was measured in the range between 25 and 250 K, it showed a temperature-dependent behavior typical of a thermal equilibrium between a ground singlet state and an excited triplet state for two electrons per heme, the energy separation being [2J] = 146 cm-1. By contrast, within the same temperature range, carboxyhemoglobin was found to be diamagnetic, as already reported.Entities:
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Year: 1977 PMID: 265510 PMCID: PMC392294 DOI: 10.1073/pnas.74.2.398
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205