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- W3044484785 abstract "Abstract Pentatricopeptide repeat (PPR) proteins were identified as site-specific recognition factors for RNA editing in plant mitochondria and plastids. In this study, we characterized maize (Zea mays) kernel mutant defective kernel 53 (dek53), which has an embryo lethal and collapsed endosperm phenotype. Dek53 encodes an E-subgroup PPR protein, which possesses a short PLS repeat region of only seven repeats. Subcellular localization analysis indicated that DEK53 is localized in the mitochondrion. Strand- and transcript-specific RNA-seq analysis showed that the dek53 mutation affected C-to-U RNA editing at more than 60 mitochondrial C targets. Biochemical analysis of mitochondrial protein complexes revealed a significant reduction in the assembly of mitochondrial complex III in dek53. Transmission electron microscopic examination showed severe morphological defects of mitochondria in dek53 endosperm cells. In addition, yeast two-hybrid and luciferase complementation imaging assays indicated that DEK53 can interact with the mitochondrion-targeted non-PPR RNA editing factor ZmMORF1, suggesting that DEK53 might be a functional component of the organellar RNA editosome." @default.
- W3044484785 created "2020-07-29" @default.
- W3044484785 creator A5001651109 @default.
- W3044484785 creator A5002352267 @default.
- W3044484785 creator A5014307249 @default.
- W3044484785 creator A5061877142 @default.
- W3044484785 creator A5071241832 @default.
- W3044484785 creator A5073577412 @default.
- W3044484785 creator A5087421445 @default.
- W3044484785 date "2020-07-25" @default.
- W3044484785 modified "2023-10-15" @default.
- W3044484785 title "Maize pentatricopeptide repeat protein DEK53 is required for mitochondrial RNA editing at multiple sites and seed development" @default.
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