Site of electron acceptance by 3,6-dichloro-2,5-dimethoxy-p-benzoquinone and its relation to the bicarbonate effect on photosynthetic electron transport

G. Sarojini, Henry Daniell, Willem Vermaas

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The photosystem II electron acceptor 3,6-dichloro-2,5-dimethoxy-p-benzoquinone [DCDMQ] is suggested to replace the second quinone-type two electron acceptor B (or R); the DCDMQ Hill reaction is sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but is insensitive to dry heptane extraction of thylakoids and other photosystem II inhibitors. Addition of HCO3 - to CO2-depleted thylakoids in silicomolybdate, DCDMQ, diaminodurene and ferricyanide Hill reactions brought about 1,3,10 and 10 fold increase in the electron transport rates; these data confirm that HCO3 - affects both Q- to B and B2- to PQ reactions.

Original languageEnglish (US)
Pages (from-to)944-951
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume102
Issue number3
DOIs
StatePublished - Oct 15 1981
Externally publishedYes

Fingerprint

Bicarbonates
Electron Transport
Thylakoids
Photosystem II Protein Complex
Electrons
Diuron
Heptanes
3,6-dichloro-2,5-dimethoxy-4-benzoquinone

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

@article{f0c5c3814272405680b88be14c9d6292,
title = "Site of electron acceptance by 3,6-dichloro-2,5-dimethoxy-p-benzoquinone and its relation to the bicarbonate effect on photosynthetic electron transport",
abstract = "The photosystem II electron acceptor 3,6-dichloro-2,5-dimethoxy-p-benzoquinone [DCDMQ] is suggested to replace the second quinone-type two electron acceptor B (or R); the DCDMQ Hill reaction is sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but is insensitive to dry heptane extraction of thylakoids and other photosystem II inhibitors. Addition of HCO3 - to CO2-depleted thylakoids in silicomolybdate, DCDMQ, diaminodurene and ferricyanide Hill reactions brought about 1,3,10 and 10 fold increase in the electron transport rates; these data confirm that HCO3 - affects both Q- to B and B2- to PQ reactions.",
author = "G. Sarojini and Henry Daniell and Willem Vermaas",
year = "1981",
month = "10",
day = "15",
doi = "10.1016/0006-291X(81)91629-6",
language = "English (US)",
volume = "102",
pages = "944--951",
journal = "Biochemical and Biophysical Research Communications",
issn = "0006-291X",
publisher = "Academic Press Inc.",
number = "3",

}

TY - JOUR

T1 - Site of electron acceptance by 3,6-dichloro-2,5-dimethoxy-p-benzoquinone and its relation to the bicarbonate effect on photosynthetic electron transport

AU - Sarojini, G.

AU - Daniell, Henry

AU - Vermaas, Willem

PY - 1981/10/15

Y1 - 1981/10/15

N2 - The photosystem II electron acceptor 3,6-dichloro-2,5-dimethoxy-p-benzoquinone [DCDMQ] is suggested to replace the second quinone-type two electron acceptor B (or R); the DCDMQ Hill reaction is sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but is insensitive to dry heptane extraction of thylakoids and other photosystem II inhibitors. Addition of HCO3 - to CO2-depleted thylakoids in silicomolybdate, DCDMQ, diaminodurene and ferricyanide Hill reactions brought about 1,3,10 and 10 fold increase in the electron transport rates; these data confirm that HCO3 - affects both Q- to B and B2- to PQ reactions.

AB - The photosystem II electron acceptor 3,6-dichloro-2,5-dimethoxy-p-benzoquinone [DCDMQ] is suggested to replace the second quinone-type two electron acceptor B (or R); the DCDMQ Hill reaction is sensitive to 3-(3,4-dichlorophenyl)-1,1-dimethylurea, but is insensitive to dry heptane extraction of thylakoids and other photosystem II inhibitors. Addition of HCO3 - to CO2-depleted thylakoids in silicomolybdate, DCDMQ, diaminodurene and ferricyanide Hill reactions brought about 1,3,10 and 10 fold increase in the electron transport rates; these data confirm that HCO3 - affects both Q- to B and B2- to PQ reactions.

UR - http://www.scopus.com/inward/record.url?scp=0019881918&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019881918&partnerID=8YFLogxK

U2 - 10.1016/0006-291X(81)91629-6

DO - 10.1016/0006-291X(81)91629-6

M3 - Article

C2 - 7306199

AN - SCOPUS:0019881918

VL - 102

SP - 944

EP - 951

JO - Biochemical and Biophysical Research Communications

JF - Biochemical and Biophysical Research Communications

SN - 0006-291X

IS - 3

ER -