Linked Life Data

14640696

Source:http://linkedlifedata.com/resource/pubmed/id/14640696

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
48
pubmed:dateCreated
2003-12-3
pubmed:abstractText
Irradiation of the photosynthetic machinery with strong light induces damage to the photosystem II complex (PSII), and this phenomenon is referred to as photodamage. In an attempt to characterize the mechanism of photodamage to PSII, we examined the events associated with photodamage by monitoring the phenomenon in Synechocystis sp. PCC 6803 at a low temperature. After the activity of PSII had been reduced to 10% of the original activity by exposure of Synechocystis cells to strong light at 10 degrees C, recovery was allowed to proceed at 34 degrees C in darkness. Under these conditions, approximately 50% of the activity of PSII was restored within 60 min. The recovery in darkness did not require protein synthesis, as demonstrated by Western blotting analysis and a radiolabeling experiment with [(35)S]methionine. We also observed a similar recovery of PSII in darkness in isolated thylakoid membranes. Our findings, together with those of other studies, suggest the presence of an intermediate form of photodamaged PSII that is generated prior to the formation of photodamaged PSII.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0006-2960
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
42
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
14277-83
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Dissection of photodamage at low temperature and repair in darkness suggests the existence of an intermediate form of photodamaged photosystem II.
pubmed:affiliation
Department of Regulation Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't