A proteomic approach to iron and copper homeostasis in cyanobacteria

Briefings in Functional Genomics & Proteomics
Berta De la CerdaMiguel A De La Rosa

Abstract

Cyanobacteria, which are considered to be the chloroplast precursors, are significant contributors to global photosynthetic productivity. The ample variety of membrane and soluble proteins containing different metals (mainly, iron and copper) has made these organisms develop a complex homeostasis with different mechanisms and tight regulation processes to fulfil their metal requirements in a changing environment. Cell metabolism is so adapted as to synthesize alternative proteins depending on the relative metal availabilities. In particular, plastocyanin, a copper protein, and cytochrome c(6), a haem protein, can replace each other to play the same physiological role as electron carriers in photosynthesis and respiration, with the synthesis of one protein or another being regulated by copper concentration in the medium. The unicellular cyanobacterium Synechocystis sp. PCC 6803 has been widely used as a model system because of completion of its genome sequence and the ease of its genetic manipulation, with a lot of proteomic work being done. In this review article, we focus on the functional characterization of knockout Synechocystis mutants for plastocyanin and cytochrome c(6), and discuss the ongoing proteomic analyses perform...Continue Reading

Citations

Oct 11, 2011·Photosynthesis Research·Francisco M Reyes-SosaFernando P Molina-Heredia
Apr 9, 2009·FEBS Letters·Ornella CastielliMiguel A De la Rosa
Mar 25, 2017·Chemistry : a European Journal·Peter CombaMartin Seefeld
Feb 2, 2018·Frontiers in Microbiology·Despo PolyviouThomas S Bibby
Mar 1, 2011·The FEBS Journal·Jonathan Martínez-FábregasMiguel Á De la Rosa
May 28, 2021·Frontiers in Bioengineering and Biotechnology·Zhang-He ZhenYin-Chu Wang

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