Viscosity dependence of O2 escape from respiratory proteins as a function of cosolvent molecular weight.

@article{Yedgar1995ViscosityDO,
  title={Viscosity dependence of O2 escape from respiratory proteins as a function of cosolvent molecular weight.},
  author={Saul Yedgar and Catherine T{\'e}treau and Benjamin Gavish and Daniel Lavalette},
  journal={Biophysical journal},
  year={1995},
  volume={68 2},
  pages={665-70}
}
Laser photodissociation of respiratory proteins is followed by fast geminate recombination competing with escape of the oxygen molecule into the solvent. The escape rate from myoglobin or hemerythrin has been shown previously to exhibit a reciprocal power-law dependence on viscosity. We have reinvestigated oxygen escape from hemerythrin using a number of viscous cosolvents of varying molecular weight, from glycerol to dextrans up to 500 kDa. In isoviscous solutions, the strong viscosity… CONTINUE READING