Quantitative studies on the EPR signals of photosynthetic system I and ferredoxin

C. S. Yang; W. E. Blumberg

doi:10.1016/S0006-291X(72)80155-4

Quantitative studies on the EPR signals of photosynthetic system I and ferredoxin

C. S. Yang, W. E. Blumberg

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The relative sizes of the electron paramagnetic resonance absorptions of ferredoxin and photosynthetic System I were measured at 1.5°K after illuminating spinach chloroplasts at 77°K or at 1.5°K. The total amount of reduced ferredoxin produced by the irradiation was less than 10% of the induced Photosystem I free radical. The EPR signal of a second photosensitive nonheme iron center has also been observed. The reported role of ferredoxin as a primary electron acceptor is discussed.

Original language	English (US)
Pages (from-to)	422-428
Number of pages	7
Journal	Biochemical and Biophysical Research Communications
Volume	46
Issue number	2
DOIs	https://doi.org/10.1016/S0006-291X(72)80155-4
State	Published - Jan 31 1972
Externally published	Yes

All Science Journal Classification (ASJC) codes

Biophysics
Biochemistry
Molecular Biology
Cell Biology

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10.1016/S0006-291X(72)80155-4

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title = "Quantitative studies on the EPR signals of photosynthetic system I and ferredoxin",

abstract = "The relative sizes of the electron paramagnetic resonance absorptions of ferredoxin and photosynthetic System I were measured at 1.5°K after illuminating spinach chloroplasts at 77°K or at 1.5°K. The total amount of reduced ferredoxin produced by the irradiation was less than 10% of the induced Photosystem I free radical. The EPR signal of a second photosensitive nonheme iron center has also been observed. The reported role of ferredoxin as a primary electron acceptor is discussed.",

author = "Yang, {C. S.} and Blumberg, {W. E.}",

note = "Funding Information: Acknowledgments: This work was supported by USPHS Grant GM-04483 and NSF Grant GB-7459. The authors wish to thank Mrs. J. Lee for her able assistance in preparing chloroplasts, and to Dr. Jui H. Wang, Dr. S. I. Tu and Mr. K. Y. Chert for helpful discussions.",

year = "1972",

month = jan,

day = "31",

doi = "10.1016/S0006-291X(72)80155-4",

language = "English (US)",

volume = "46",

pages = "422--428",

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T1 - Quantitative studies on the EPR signals of photosynthetic system I and ferredoxin

AU - Yang, C. S.

AU - Blumberg, W. E.

N1 - Funding Information: Acknowledgments: This work was supported by USPHS Grant GM-04483 and NSF Grant GB-7459. The authors wish to thank Mrs. J. Lee for her able assistance in preparing chloroplasts, and to Dr. Jui H. Wang, Dr. S. I. Tu and Mr. K. Y. Chert for helpful discussions.

PY - 1972/1/31

Y1 - 1972/1/31

N2 - The relative sizes of the electron paramagnetic resonance absorptions of ferredoxin and photosynthetic System I were measured at 1.5°K after illuminating spinach chloroplasts at 77°K or at 1.5°K. The total amount of reduced ferredoxin produced by the irradiation was less than 10% of the induced Photosystem I free radical. The EPR signal of a second photosensitive nonheme iron center has also been observed. The reported role of ferredoxin as a primary electron acceptor is discussed.

AB - The relative sizes of the electron paramagnetic resonance absorptions of ferredoxin and photosynthetic System I were measured at 1.5°K after illuminating spinach chloroplasts at 77°K or at 1.5°K. The total amount of reduced ferredoxin produced by the irradiation was less than 10% of the induced Photosystem I free radical. The EPR signal of a second photosensitive nonheme iron center has also been observed. The reported role of ferredoxin as a primary electron acceptor is discussed.

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DO - 10.1016/S0006-291X(72)80155-4

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SN - 0006-291X

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JO - Biochemical and Biophysical Research Communications

JF - Biochemical and Biophysical Research Communications

IS - 2

ER -

Quantitative studies on the EPR signals of photosynthetic system I and ferredoxin

Abstract

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