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Publication . Article . 2016

Functional update of the auxiliary proteins PsbW, PsbY, HCF136, PsbN, TerC and ALB3 in maintenance and assembly of PSII

Magdalena Plöchinger; Serena Schwenkert; Lotta von Sydow; Wolfgang P. Schröder; Jörg Meurer;
Open Access
Published: 07 Apr 2016 Journal: Frontiers in Plant Science, volume 7
Publisher: Frontiers Media S.A.
Country: Sweden
Assembly of Photosystem (PS) II in plants has turned out to be a highly complex process which, at least in part, occurs in a sequential order and requires many more auxiliary proteins than subunits present in the complex. Owing to the high evolutionary conservation of the subunit composition and the three-dimensional structure of the PSII complex, most plant factors involved in the biogenesis of PSII originated from cyanobacteria and only rarely evolved de novo. Furthermore, in chloroplasts the initial assembly steps occur in the non-appressed stroma lamellae, whereas the final assembly including the attachment of the major LHCII antenna proteins takes place in the grana regions. The stroma lamellae are also the place where part of PSII repair occurs, which very likely also involves assembly factors. In cyanobacteria initial PSII assembly also occurs in the thylakoid membrane, in so-called thylakoid centers, which are in contact with the plasma membrane. Here, we provide an update on the structures, localisations, topologies, functions, expression and interactions of the low molecular mass PSII subunits PsbY, PsbW and the auxiliary factors HCF136, PsbN, TerC and ALB3, assisting in PSII complex assembly and protein insertion into the thylakoid membrane.
Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Plant culture lcsh:SB1-1110

Medical Subject Headings: food and beverages macromolecular substances

Microsoft Academic Graph classification: Cyanobacteria biology.organism_classification biology Biophysics Protein subunit Arabidopsis Photosystem Cytochrome b559 Chloroplast Biochemistry Biogenesis Thylakoid


Arabidopsis, Assembly, Cytochrome b559, PSII Photosystem II, low molecular mass proteins, PSII photosystem II, cytochrome b559, assembly, low molecular mass proteins, Arabidopsis, Biochemistry and Molecular Biology, Biokemi och molekylärbiologi, Plant Science, Review