Drosophila protease ClpXP specifically degrades DmLRPPRC1 controlling mitochondrial mRNA and translation.
Sci Rep
; 7(1): 8315, 2017 08 16.
Article
em En
| MEDLINE
| ID: mdl-28814717
ABSTRACT
ClpXP is the major protease in the mitochondrial matrix in eukaryotes, and is well conserved among species. ClpXP is composed of a proteolytic subunit, ClpP, and a chaperone-like subunit, ClpX. Although it has been proposed that ClpXP is required for the mitochondrial unfolded protein response, additional roles for ClpXP in mitochondrial biogenesis are unclear. Here, we found that Drosophila leucine-rich pentatricopeptide repeat domain-containing protein 1 (DmLRPPRC1) is a specific substrate of ClpXP. Depletion or introduction of catalytically inactive mutation of ClpP increases DmLRPPRC1 and causes non-uniform increases of mitochondrial mRNAs, accumulation of some unprocessed mitochondrial transcripts, and modest repression of mitochondrial translation in Drosophila Schneider S2 cells. Moreover, DmLRPPRC1 over-expression induces the phenotypes similar to those observed when ClpP is depleted. Taken together, ClpXP regulates mitochondrial gene expression by changing the protein level of DmLRPPRC1 in Drosophila Schneider S2 cells.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Biossíntese de Proteínas
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RNA Mensageiro
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Proteínas Mitocondriais
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Endopeptidase Clp
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Drosophila
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RNA Mitocondrial
Limite:
Animals
Idioma:
En
Ano de publicação:
2017
Tipo de documento:
Article