Low-temperature spectroscopy of fully active PSII cores. Comparisons with CP43, CP47, D1/D2/cyt b559 fragments

Sindra Peterson Arskold; Barry J. Prince; Elmars Krausz; Paul J. Smith; Ron J. Pace; Rafael Picorel; Michael Seibert

doi:10.1016/j.jlumin.2004.01.023

Low-temperature spectroscopy of fully active PSII cores. Comparisons with CP43, CP47, D1/D2/cyt b₅₅₉ fragments

Sindra Peterson Arskold, Barry J. Prince, Elmars Krausz^*, Paul J. Smith, Ron J. Pace, Rafael Picorel, Michael Seibert

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

21 Citations (Scopus)

Abstract

Comparisons of absorption spectra of photosystem II (PSII) core complexes with those of isolated CP43, CP47 and D1/D2/cyt b₅₅₉ complexes show broadenings and shifts upon disassembly of the PSII core material. Spectra of PSII cores isolated from plants and cyanobacteria reveal marked changes in energies and intensities of the sharp features associated with P680. Low-temperature, illumination-induced electrochromic shifts in PSII cores allow identification of an excitation localized on pheopytin-a (pheo a) in D1. A weak interaction between an exciton component of P680 and the D1 pheo a, both located near 684nm, is suggested. MCD spectra of 5- and 6-chlorophyll a D1/D2/cytochrome b₅₅₉ preparations provide links to photoactive pigments in intact PSII cores.

Original language	English
Pages (from-to)	97-100
Number of pages	4
Journal	Journal of Luminescence
Volume	108
Issue number	1-4
DOIs	https://doi.org/10.1016/j.jlumin.2004.01.023
Publication status	Published - Jun 2004
Event	Proceedings of the Fourtheenth International Conference - Christchurch, New Zealand Duration: 3 Aug 2003 → 8 Aug 2003

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@article{4d3758ecf12b4520824f8537a85b0123,

title = "Low-temperature spectroscopy of fully active PSII cores. Comparisons with CP43, CP47, D1/D2/cyt b559 fragments",

abstract = "Comparisons of absorption spectra of photosystem II (PSII) core complexes with those of isolated CP43, CP47 and D1/D2/cyt b559 complexes show broadenings and shifts upon disassembly of the PSII core material. Spectra of PSII cores isolated from plants and cyanobacteria reveal marked changes in energies and intensities of the sharp features associated with P680. Low-temperature, illumination-induced electrochromic shifts in PSII cores allow identification of an excitation localized on pheopytin-a (pheo a) in D1. A weak interaction between an exciton component of P680 and the D1 pheo a, both located near 684nm, is suggested. MCD spectra of 5- and 6-chlorophyll a D1/D2/cytochrome b559 preparations provide links to photoactive pigments in intact PSII cores.",

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

author = "Arskold, {Sindra Peterson} and Prince, {Barry J.} and Elmars Krausz and Smith, {Paul J.} and Pace, {Ron J.} and Rafael Picorel and Michael Seibert",

year = "2004",

month = jun,

doi = "10.1016/j.jlumin.2004.01.023",

language = "English",

volume = "108",

pages = "97--100",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

number = "1-4",

note = "Proceedings of the Fourtheenth International Conference ; Conference date: 03-08-2003 Through 08-08-2003",

}

TY - JOUR

T1 - Low-temperature spectroscopy of fully active PSII cores. Comparisons with CP43, CP47, D1/D2/cyt b559 fragments

AU - Arskold, Sindra Peterson

AU - Prince, Barry J.

AU - Krausz, Elmars

AU - Smith, Paul J.

AU - Pace, Ron J.

AU - Picorel, Rafael

AU - Seibert, Michael

PY - 2004/6

Y1 - 2004/6

N2 - Comparisons of absorption spectra of photosystem II (PSII) core complexes with those of isolated CP43, CP47 and D1/D2/cyt b559 complexes show broadenings and shifts upon disassembly of the PSII core material. Spectra of PSII cores isolated from plants and cyanobacteria reveal marked changes in energies and intensities of the sharp features associated with P680. Low-temperature, illumination-induced electrochromic shifts in PSII cores allow identification of an excitation localized on pheopytin-a (pheo a) in D1. A weak interaction between an exciton component of P680 and the D1 pheo a, both located near 684nm, is suggested. MCD spectra of 5- and 6-chlorophyll a D1/D2/cytochrome b559 preparations provide links to photoactive pigments in intact PSII cores.

AB - Comparisons of absorption spectra of photosystem II (PSII) core complexes with those of isolated CP43, CP47 and D1/D2/cyt b559 complexes show broadenings and shifts upon disassembly of the PSII core material. Spectra of PSII cores isolated from plants and cyanobacteria reveal marked changes in energies and intensities of the sharp features associated with P680. Low-temperature, illumination-induced electrochromic shifts in PSII cores allow identification of an excitation localized on pheopytin-a (pheo a) in D1. A weak interaction between an exciton component of P680 and the D1 pheo a, both located near 684nm, is suggested. MCD spectra of 5- and 6-chlorophyll a D1/D2/cytochrome b559 preparations provide links to photoactive pigments in intact PSII cores.

KW - CD

KW - Exciton coupling

KW - MCD

KW - Photosystem

KW - Stark shifts

UR - http://www.scopus.com/inward/record.url?scp=2342544879&partnerID=8YFLogxK

U2 - 10.1016/j.jlumin.2004.01.023

DO - 10.1016/j.jlumin.2004.01.023

M3 - Conference article

SN - 0022-2313

VL - 108

SP - 97

EP - 100

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 1-4

T2 - Proceedings of the Fourtheenth International Conference

Y2 - 3 August 2003 through 8 August 2003

ER -

Low-temperature spectroscopy of fully active PSII cores. Comparisons with CP43, CP47, D1/D2/cyt b₅₅₉ fragments

Abstract

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