Stark shifts and exciton coupling in PSII 'Supercores'

Vanessa Masters; Paul Smith; Elmars Krausz; Ron Pace

doi:10.1016/S0022-2313(01)00295-2

Stark shifts and exciton coupling in PSII 'Supercores'

Vanessa Masters, Paul Smith, Elmars Krausz^*, Ron Pace

^*Corresponding author for this work

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

14 Citations (Scopus)

Abstract

Low-temperature spectroscopic measurements are reported on a detergent solubilized plant photosystem II (PSII) core preparation retaining full O₂ evolving capacity but only 32 chlorophyll-a's (chl_a) per reaction center (RC). Absorption, CD, MCD and luminescence measurements in the S1 state allow the identification of the exciton splitting in P680 as 187cm^-1. Illumination converts PSII to the S2 state(s) and Stark shifts of individual PSII chromophores are identifiable. Stark shifts are analyzed in terms of structural details of PSII. The relationship of our results to the studies of preparations containing 4-6 chl_a per RC is outlined.

Original language	English
Pages (from-to)	267-270
Number of pages	4
Journal	Journal of Luminescence
Volume	94-95
DOIs	https://doi.org/10.1016/S0022-2313(01)00295-2
Publication status	Published - Dec 2001

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title = "Stark shifts and exciton coupling in PSII 'Supercores'",

abstract = "Low-temperature spectroscopic measurements are reported on a detergent solubilized plant photosystem II (PSII) core preparation retaining full O2 evolving capacity but only 32 chlorophyll-a's (chla) per reaction center (RC). Absorption, CD, MCD and luminescence measurements in the S1 state allow the identification of the exciton splitting in P680 as 187cm-1. Illumination converts PSII to the S2 state(s) and Stark shifts of individual PSII chromophores are identifiable. Stark shifts are analyzed in terms of structural details of PSII. The relationship of our results to the studies of preparations containing 4-6 chla per RC is outlined.",

keywords = "CD, Exciton coupling, MCD, Photosystem, Stark shifts",

author = "Vanessa Masters and Paul Smith and Elmars Krausz and Ron Pace",

year = "2001",

month = dec,

doi = "10.1016/S0022-2313(01)00295-2",

language = "English",

volume = "94-95",

pages = "267--270",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Stark shifts and exciton coupling in PSII 'Supercores'

AU - Masters, Vanessa

AU - Smith, Paul

AU - Krausz, Elmars

AU - Pace, Ron

PY - 2001/12

Y1 - 2001/12

N2 - Low-temperature spectroscopic measurements are reported on a detergent solubilized plant photosystem II (PSII) core preparation retaining full O2 evolving capacity but only 32 chlorophyll-a's (chla) per reaction center (RC). Absorption, CD, MCD and luminescence measurements in the S1 state allow the identification of the exciton splitting in P680 as 187cm-1. Illumination converts PSII to the S2 state(s) and Stark shifts of individual PSII chromophores are identifiable. Stark shifts are analyzed in terms of structural details of PSII. The relationship of our results to the studies of preparations containing 4-6 chla per RC is outlined.

AB - Low-temperature spectroscopic measurements are reported on a detergent solubilized plant photosystem II (PSII) core preparation retaining full O2 evolving capacity but only 32 chlorophyll-a's (chla) per reaction center (RC). Absorption, CD, MCD and luminescence measurements in the S1 state allow the identification of the exciton splitting in P680 as 187cm-1. Illumination converts PSII to the S2 state(s) and Stark shifts of individual PSII chromophores are identifiable. Stark shifts are analyzed in terms of structural details of PSII. The relationship of our results to the studies of preparations containing 4-6 chla per RC is outlined.

KW - CD

KW - Exciton coupling

KW - MCD

KW - Photosystem

KW - Stark shifts

UR - http://www.scopus.com/inward/record.url?scp=0035700456&partnerID=8YFLogxK

U2 - 10.1016/S0022-2313(01)00295-2

DO - 10.1016/S0022-2313(01)00295-2

M3 - Article

SN - 0022-2313

VL - 94-95

SP - 267

EP - 270

JO - Journal of Luminescence

JF - Journal of Luminescence

ER -

Stark shifts and exciton coupling in PSII 'Supercores'

Abstract

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