Linked Life Data

19247507

Source:http://linkedlifedata.com/resource/pubmed/id/19247507

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2009-2-27
pubmed:abstractText
An electrometric technique was used to investigate the generation of a photovoltage (Deltapsi) by Mn-depleted spinach photosystem II (PS II) core particles incorporated into liposomes. In the presence of MnCl2, the fast kinetically unresolvable phase of Deltapsi generation, related to electron transfer between the redox-active tyrosine YZ and the primary plastoquinone acceptor QA was followed by an additional electrogenic phase (tau approximately 20 micros, approximately 5% of the phase attributed to YZoxQA-). The latter phase was ascribed to the transfer of an electron from the Mn, bound to the Mn-binding site of the PS II reaction center to the YZox. An additional electrogenicity observed upon addition of synthetic trinuclear Mn complex-1 has a tau approximately 50 micros (approximately 4% of the YZoxQA) and tau approximately 160 ms (approximately 25%). The fast electrogenic component could be ascribed to reduction of YZox by Mn, delivered to the Mn-binding site in Mn-depleted samples after the release of the tripod ligands from the complex-1 while the slow electrogenic phase to the electron transfer from the Mn-containing complex-1 attached to the protein-water boundary to the oxidized Mn at the protein-embedded Mn-binding site.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
1474-905X
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
162-6
pubmed:meshHeading
pubmed:year
2009
pubmed:articleTitle
Electrogenic reactions on the donor side of Mn-depleted photosystem II core particles in the presence of MnCl2 and synthetic trinuclear Mn-complexes.
pubmed:affiliation
A.N. Belozersky Institute of Physical-Chemical Biology, Moscow State University, Moscow, 119992, Russia.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't