Proteomics

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The Arabidopsis NOT4A E3 ligase promotes PGR3 expression and regulates chloroplast function

ABSTRACT: Chloroplast function requires the coordinated action of nuclear- and chloroplast-derived proteins, including several hundred nuclear-encoded pentatricopeptide repeat (PPR) proteins that regulate plastid mRNA metabolism. Despite their large number and importance, regulatory mechanisms controlling PPR expression are poorly understood. Here we show that the Arabidopsis NOT4A ubiquitin-ligase positively regulates PROTON GRADIENT 3 (PGR3), a PPR protein required for translating 30S ribosome subunits and several thylakoid-localised photosynthetic components within chloroplasts.

INSTRUMENT(S): Synapt MS

ORGANISM(S): Arabidopsis Thaliana (mouse-ear Cress)

TISSUE(S): Leaf, Shoot

SUBMITTER: Sacha Baginsky  

LAB HEAD: Sacha Baginsky

PROVIDER: PXD022584 | Pride | 2021-09-09

REPOSITORIES: Pride

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Dataset's files

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20180821_acuxc_mut1_001-rpt.raw.zip Raw
20180821_acuxc_mut1_001-rpt_20180901120334.zip Other
20180821_acuxc_mut1_002.raw.zip Raw
20180821_acuxc_mut1_002_20180902023809.zip Other
20180821_acuxc_mut1_003.raw.zip Raw
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Publications

Chloroplast function requires the coordinated action of nuclear- and chloroplast-derived proteins, including several hundred nuclear-encoded pentatricopeptide repeat (PPR) proteins that regulate plastid mRNA metabolism. Despite their large number and importance, regulatory mechanisms controlling PPR expression are poorly understood. Here we show that the Arabidopsis NOT4A ubiquitin-ligase positively regulates the expression of PROTON GRADIENT REGULATION 3 (PGR3), a PPR protein required for trans  ...[more]

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