Ming Yi, Ronald J. Podhajsky, et al.
SPIE Photonics West BiOS 2011
Recent magnetic studies have shown that in the pH range 1 to 11 the bacterial heme protein ferricytochrome c′ can undergo reversible transitions between various pure high-spin and quantum mechanically mixed (intermediate and high)-spin protein states. The EPR data presented here extend the recent work to high alkaline pH and show that above pH 11.6 reversible transitions occur between various pure high-spin and pure low-spin protein states. The new data and the previous magnetic studies of the protein are discussed in the context of the entatic nature of the iron-porphyrin complex in ferricytochrome c′. EPR data are also provided concerning an anomalous, but reversible, transition to a protein state with reduced heme iron, triggered by freezing and thawing at physiological pH. © 1975.
Ming Yi, Ronald J. Podhajsky, et al.
SPIE Photonics West BiOS 2011
Kahn Rhrissorrakrai, Filippo Utro, et al.
bioRxiv
Pushpak Pati, Antonio Foncubierta-Rodriguez, et al.
Medical Image Analysis
Uri Kartoun, Akl C. Fahed, et al.
European Heart Journal Open