title: A previously found thylakoid membrane protein of 14kDa (TMP14) is a novel subunit of plant photosystem I and is designated PSI-P.
abstract: We show that the thylakoid membrane phosphoprotein TMP14 is a novel subunit of plant photosystem I (PSI). Blue native/SDS-PAGE and sucrose gradient fractionation demonstrated the association of the protein exclusively with PSI. We designate the protein PSI-P. The presence of PSI-P subunit in Arabidopsis mutants lacking other PSI subunits was analyzed and suggested a location in the proximity of PSI-L, -H and -O subunits. The PSI-P protein was not differentially phosphorylated in state 1 and state 2.
authors.affiliation: Plant Biochemistry Laboratory, Department of Plant Biology, The Royal Veterinary and Agricultural University, 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark.
authors.forename: Anastassia
authors.initials: A
authors.lastname: Khrouchtchova
authors.forename: Maria
authors.initials: M
authors.lastname: Hansson
authors.forename: Virpi
authors.initials: V
authors.lastname: Paakkarinen
authors.forename: Julia P
authors.initials: JP
authors.lastname: Vainonen
authors.forename: Suping
authors.initials: S
authors.lastname: Zhang
authors.forename: Poul Erik
authors.initials: PE
authors.lastname: Jensen
authors.forename: Henrik Vibe
authors.initials: HV
authors.lastname: Scheller
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Vener
authors.forename: Eva-Mari
authors.initials: EM
authors.lastname: Aro
authors.forename: Anna
authors.initials: A
authors.lastname: Haldrup
mesh_terms: D017360:Arabidopsis / Q000166:cytology / Q000235:genetics / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D004268:DNA-Binding Proteins; D007525:Isoelectric Focusing; D008027:Light; D008565:Membrane Proteins / Q000737:chemistry / Q000378:metabolism*; D008958:Models, Molecular; D008970:Molecular Weight; D010766:Phosphorylation; D045331:Photosystem I Protein Complex / Q000737:chemistry* / Q000378:metabolism; D010940:Plant Proteins / Q000737:chemistry / Q000378:metabolism*; D021122:Protein Subunits / Q000737:chemistry / Q000378:metabolism*; D020524:Thylakoids / Q000737:chemistry* / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; C504242:At2g46820 protein, Arabidopsis; D004268:DNA-Binding Proteins; D008565:Membrane Proteins; D045331:Photosystem I Protein Complex; D010940:Plant Proteins; D021122:Protein Subunits