A1 Refereed original research article in a scientific journal
Interplay of SpkG kinase and the Slr0151 protein in the phosphorylation of ferredoxin 5 in Synechocystis sp strain PCC 6803
Authors: Martina Angeleri, Anna Zorina, Eva-Mari Aro, Natalia Battchikova
Publisher: WILEY
Publication year: 2018
Journal: FEBS Letters
Journal name in source: FEBS LETTERS
Journal acronym: FEBS LETT
Volume: 592
Issue: 3
First page : 411
Last page: 421
Number of pages: 11
ISSN: 1873-3468
eISSN: 1873-3468
DOI: https://doi.org/10.1002/1873-3468.12970
Abstract
In Synechocystis 6803, the ferredoxin 5 (Fd5) phosphoprotein and the S/T protein kinase SpkG are encoded by the slr0148 and slr0152 genes, respectively, which belong to the slr0144-slr0152 cluster. Using a targeted proteomic approach, we showed that SpkG is responsible for the phosphorylation of Fd5 on residues T18 and T72. Sequence alignments and Fd5 structure modelling suggest that these phosphorylation events modulate protein-protein interaction. Furthermore, Fd5 phosphorylation is affected by the Slr0151 protein encoded by the gene preceding spkG in the gene cluster. We propose that Slr0151 functions as an auxiliary protein in the regulation of the ratio between phosphorylated and nonphosphorylated forms of Fd5.
In Synechocystis 6803, the ferredoxin 5 (Fd5) phosphoprotein and the S/T protein kinase SpkG are encoded by the slr0148 and slr0152 genes, respectively, which belong to the slr0144-slr0152 cluster. Using a targeted proteomic approach, we showed that SpkG is responsible for the phosphorylation of Fd5 on residues T18 and T72. Sequence alignments and Fd5 structure modelling suggest that these phosphorylation events modulate protein-protein interaction. Furthermore, Fd5 phosphorylation is affected by the Slr0151 protein encoded by the gene preceding spkG in the gene cluster. We propose that Slr0151 functions as an auxiliary protein in the regulation of the ratio between phosphorylated and nonphosphorylated forms of Fd5.
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