A Re-evaluation of the Mole Fraction of PFR at the Red-light-induced Photostationary State of Undegraded Rye Phytochrome |
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| Authors: | Yamamoto Kotaro T; Smith William O Jr |
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| Institution: | Smithsonian Radiation Biology Laboratory, 12441 Parklawn Drive Rockville, MD 20852, U.S.A. |
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| Abstract: | Photochemical properties were determined for undegraded phytochromepurified from lyophilized rye seedlings (Secale cereale cv.Cougar). The preparation was shown to be a two-component systemduring phototransformations and dark transformation from red-light-inducedphotostationary state. The mole fraction of PFR at the 665-nm-light-inducedphotostationary state was 0.84. The ratio of the quantum yieldof photoconversion from PR to PFR to that from PFR to PR was1.53.
1 Present address: Division of Biological Regulation, NationalInstitute for Basic Biology, Myodaijicho, Okazaki 444, Japan (Received March 18, 1981; Accepted August 3, 1981) |
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