Glutathione Singlet oxygen

Devasagayam, T.P.A.; Sundquist, A.R.; Di Mascio, P.; Kaiser, S.; Sies, H.
J. Photochem. Photobiol., B 9, 105-116 (1991)

Reaction: Glutathione + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O

k = 2.4 × 10⁶(L mol^-1 s^-1), pH = 7.4, T = 310K

Experimental method: Chemical reaction
Analytical method: infrared luminescence
Data type: Derived from steady state measurements

used solvent k_d = 1.9 × 10⁴ s^-1; ¹O₂* from NDPO₂.

Chacon, J.N.; Truscott, T.G.
J. Photochem. Photobiol., B 11, 261-267 (1991)

Reaction: Glutathione + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O

k = 8.7 × 10⁵(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Absolute value measured directly
Excitation wavelength: 694 nm

Photosensitizer = Methylene Blue. [Sensitizer] = 3.0 × 10^-5 (mol L^-1).

Di Mascio, P.; Devasagayam, T.P.A.; Kaiser, S.; Sies, H.
Biochem. Soc. Trans. 18, 1054-1056 (1990)

Reaction: Glutathione + ¹O₂^* ® products and/or physical quenching
Solvent: CHCl₃, 50%, EtOH, 50%

k = 5.9 × 10⁷(L mol^-1 s^-1), T = 310K

Experimental method: Chemical reaction
Analytical method: infrared luminescence
Data type: Derived from steady state measurements

used solvent k_d = 1 × 10⁵ s^-1; ¹O₂* from NDPO₂.

Di Mascio, P.; Devasagayam, T.P.A.; Kaiser, S.; Sies, H.
Biochem. Soc. Trans. 18, 1054-1056 (1990)

Reaction: Glutathione + ¹O₂^* ® products
Solvent: CHCl₃, 50%, EtOH, 50%

k_react = 1.7 × 10⁶(L mol^-1 s^-1), T = 310K

Experimental method: Chemical reaction
Analytical method: chemical analysis
Data type: Derived from steady state measurements

used solvent k_d = 1 × 10⁵ s^-1; ¹O₂* from NDPO₂.

Rougee, M.; Bensasson, R.V.; Land, E.J.; Pariente, R.
Photochem. Photobiol. 47, 485-489 (1988)

Reaction: Glutathione + ¹O₂^* ® products and/or physical quenching
Solvent: D₂O

k £ 4 × 10⁴(L mol^-1 s^-1)

Experimental method: Flash photolysis
Analytical method: infrared luminescence
Data type: Derived from pH study

Photosensitizer = H₂TPPS^4- or H₂TMpyP⁴⁺; calcd. from k_obs = 2.9 × 10⁶ at pH 7 and pK_a(D₂O) = 9.2.