Yeast and human mitochondrial helicases.
PBN-AR
Instytucja
Instytut Biochemii i Biofizyki Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Biochimica et biophysica acta
ISSN
1874-9399
EISSN
0006-3002
Wydawca
Elsevier BV
DOI
Rok publikacji
2013
Numer zeszytu
8
Strony od-do
842-853
Numer tomu
1829
Identyfikator DOI
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Autorzy
Pozostali autorzy
+ 4
Słowa kluczowe
EN
Mitochondrial degradosome;
RNA degradation;
Suv3 helicase (SUPV3L1 hSuv3p, hSuv3, Suv3p);
MSS116;
IRC3;
Twinkle
Streszczenia
Język
EN
Treść
Mitochondria are semiautonomous organelles which contain their own genome. Both maintenance and expression of mitochondrial DNA require activity of RNA and DNA helicases. In Saccharomyces cerevisiae the nuclear genome encodes four DExH/D superfamily members (MSS116, SUV3, MRH4, IRC3) that act as helicases and/or RNA chaperones. Their activity is necessary for mitochondrial RNA splicing, degradation, translation and genome maintenance. In humans the ortholog of SUV3 (hSUV3, SUPV3L1) so far is the best described mitochondrial RNA helicase. The enzyme, together with the matrix-localized pool of PNPase (PNPT1), forms an RNA-degrading complex called the mitochondrial degradosome, which localizes to distinct structures (D-foci). Global regulation of mitochondrially encoded genes can be achieved by changing mitochondrial DNA copy number. This way the proteins involved in its replication, like the Twinkle helicase (c10orf2), can indirectly regulate gene expression. Here, we describe yeast and human mitochondrial helicases that are directly involved in mitochondrial RNA metabolism, and present other helicases that participate in mitochondrial DNA replication and maintenance. This article is part of a Special Issue entitled: The Biology of RNA helicases - Modulation for life.
Inne
System-identifier
4752
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