Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2004-9-9
pubmed:abstractText
The light-harvesting antenna of higher plant photosystem (PS) I is known to be composed of four different types of light-harvesting complex (LHC) proteins (Lhca1-4). However, the genomic sequence of Arabidopsis thaliana contains open reading frames coding for two additional LHC type proteins (Lhca5-6) that are presumably associated with PSI. While Lhca6 might not be expressed at all, ESTs have been detected for the Lhca5 gene in Arabidopsis and a number of other plant species. Here we demonstrate the presence of the Lhca5 gene product in the thylakoid membrane of Arabidopsis as an additional type of Lhca-protein associated with PSI. Lhca5 seems to be regulated differently from the other LHC proteins since Lhca5 mRNA levels increase under high light conditions. Analyses reported here of Lhca5 in plants lacking individual Lhca1-4 proteins show that it is more abundant in plants lacking Lhca1/4, and suggest that it interacts in a direct physical fashion with Lhca2 or Lhca3. We propose that Lhca5 binds chlorophylls in a similar fashion to the other Lhca proteins and is associated with PSI only in sub-stoichiometric amounts.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0167-4412
pubmed:author
pubmed:issnType
Print
pubmed:volume
54
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
641-51
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed-meshheading:15356385-Amino Acid Sequence, pubmed-meshheading:15356385-Arabidopsis, pubmed-meshheading:15356385-Arabidopsis Proteins, pubmed-meshheading:15356385-Blotting, Western, pubmed-meshheading:15356385-Cold Temperature, pubmed-meshheading:15356385-Gene Expression Regulation, Plant, pubmed-meshheading:15356385-Light-Harvesting Protein Complexes, pubmed-meshheading:15356385-Molecular Sequence Data, pubmed-meshheading:15356385-Mutation, pubmed-meshheading:15356385-Phenotype, pubmed-meshheading:15356385-Photosystem I Protein Complex, pubmed-meshheading:15356385-Phylogeny, pubmed-meshheading:15356385-Pigments, Biological, pubmed-meshheading:15356385-Protein Binding, pubmed-meshheading:15356385-RNA, Plant, pubmed-meshheading:15356385-Reverse Transcriptase Polymerase Chain Reaction, pubmed-meshheading:15356385-Spectrometry, Fluorescence, pubmed-meshheading:15356385-Thylakoids
pubmed:year
2004
pubmed:articleTitle
Lhca5--an LHC-type protein associated with photosystem I.
pubmed:affiliation
Umeå Plant Science Centre, Department of Plant Physiology, Umeå University, S-901 87 Umeå, Sweden. ulrika.ganeteg@plantphys.umu.se
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't