Kinetics of EPR signal IIvf in chloroplast Photosystem II

Michael Boska; Kenneth Sauer

doi:10.1016/0005-2728(84)90160-9

Kinetics of EPR signal II_vf in chloroplast Photosystem II

Michael Boska, Kenneth Sauer

Radiology

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

30 Scopus citations

Abstract

The risetime of EPR signal II_vf (S II_vf) has been measured in oxygen-evolving Photosystem II particles from spinach chloroplasts at pH 6.0. The EPR signal shows an instrument-limited rise upon induction (t_{1 2} ≤ 3 μs). These data are consistent with a model where the species Z responsible for S II_vf is the immediate electron donor to P-680⁺ in spinach chloroplasts. A new, faster decay component of S II_vf has also been detected in these experiments.

Original language	English (US)
Pages (from-to)	84-87
Number of pages	4
Journal	BBA - Bioenergetics
Volume	765
Issue number	1
DOIs	https://doi.org/10.1016/0005-2728(84)90160-9
State	Published - Apr 26 1984

Keywords

(Spinach chloroplast)
ESR
Electron transport
Photosystem II

ASJC Scopus subject areas

Biophysics
Biochemistry
Cell Biology

Access to Document

10.1016/0005-2728(84)90160-9

Cite this

@article{362444d1426f467cada6adde033412fa,

title = "Kinetics of EPR signal IIvf in chloroplast Photosystem II",

abstract = "The risetime of EPR signal IIvf (S IIvf) has been measured in oxygen-evolving Photosystem II particles from spinach chloroplasts at pH 6.0. The EPR signal shows an instrument-limited rise upon induction (t 1 2 ≤ 3 μs). These data are consistent with a model where the species Z responsible for S IIvf is the immediate electron donor to P-680+ in spinach chloroplasts. A new, faster decay component of S IIvf has also been detected in these experiments.",

keywords = "(Spinach chloroplast), ESR, Electron transport, Photosystem II",

author = "Michael Boska and Kenneth Sauer",

note = "Funding Information: This work was supportebdy the DirectorO, ffice of EnergyR esearchO, fficeof Basic EnergyS cien-ces, Division of BiologicalE nergyC onversiona nd Conservatioonf the Departmenotf Energy,u nder contract DE-ACO3-76SF00098a, nd by a grant from the National ScienceF oundation( PCM 82-16127).",

year = "1984",

month = apr,

day = "26",

doi = "10.1016/0005-2728(84)90160-9",

language = "English (US)",

volume = "765",

pages = "84--87",

journal = "BBA - Bioenergetics",

issn = "0005-2728",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Kinetics of EPR signal IIvf in chloroplast Photosystem II

AU - Boska, Michael

AU - Sauer, Kenneth

N1 - Funding Information: This work was supportebdy the DirectorO, ffice of EnergyR esearchO, fficeof Basic EnergyS cien-ces, Division of BiologicalE nergyC onversiona nd Conservatioonf the Departmenotf Energy,u nder contract DE-ACO3-76SF00098a, nd by a grant from the National ScienceF oundation( PCM 82-16127).

PY - 1984/4/26

Y1 - 1984/4/26

N2 - The risetime of EPR signal IIvf (S IIvf) has been measured in oxygen-evolving Photosystem II particles from spinach chloroplasts at pH 6.0. The EPR signal shows an instrument-limited rise upon induction (t 1 2 ≤ 3 μs). These data are consistent with a model where the species Z responsible for S IIvf is the immediate electron donor to P-680+ in spinach chloroplasts. A new, faster decay component of S IIvf has also been detected in these experiments.

AB - The risetime of EPR signal IIvf (S IIvf) has been measured in oxygen-evolving Photosystem II particles from spinach chloroplasts at pH 6.0. The EPR signal shows an instrument-limited rise upon induction (t 1 2 ≤ 3 μs). These data are consistent with a model where the species Z responsible for S IIvf is the immediate electron donor to P-680+ in spinach chloroplasts. A new, faster decay component of S IIvf has also been detected in these experiments.

KW - (Spinach chloroplast)

KW - ESR

KW - Electron transport

KW - Photosystem II

UR - http://www.scopus.com/inward/record.url?scp=0040107675&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040107675&partnerID=8YFLogxK

U2 - 10.1016/0005-2728(84)90160-9

DO - 10.1016/0005-2728(84)90160-9

M3 - Article

AN - SCOPUS:0040107675

SN - 0005-2728

VL - 765

SP - 84

EP - 87

JO - BBA - Bioenergetics

JF - BBA - Bioenergetics

IS - 1

ER -