RPS14,OsSDH2-1

2015-01-20 | Categories genes  | Tags mitochondria  leaf  leaf senescence  senescence  root  yield 

• Information
  • Symbol: RPS14,OsSDH2-1
  • MSU: LOC_Os08g02640
  • RAPdb: Os08g0120000
• Publication
  • A single nuclear transcript encoding mitochondrial RPS14 and SDHB of rice is processed by alternative splicing: Common use of the same mitochondrial targeting signal for different proteins, 1999, Proc Natl Acad Sci U S A.
  • LPS1, Encoding Iron-Sulfur Subunit SDH2-1 of Succinate Dehydrogenase, Affects Leaf Senescence and Grain Yield in Rice, 2020, Int J Mol Sci.
• Genbank accession number
  • AB017427
• Key message
  • The rice mitochondrial genome has a sequence homologous to the gene for ribosomal protein S14 (rps14), but the coding sequence is interrupted by internal stop codons
  • The nuclear rps14 gene encodes a long N-terminal extension showing significant similarity to a part of mitochondrial succinate dehydrogenase subunit B (SDHB) protein from human and a malarial parasite (Plasmodium falciparum)
  • Considering that the rice mitochondrial genome lacks the sdhB gene but contains the rps14-related sequence, transfer of the sdhB gene seems to have occurred before the transfer of the rps14 gene
  • The migration of the mitochondrial rps14 sequence into the already existing sdhB gene could bestow the capacity for nuclear expression and mitochondrial targeting
  • A single nuclear transcript encoding mitochondrial RPS14 and SDHB of rice is processed by alternative splicing: Common use of the same mitochondrial targeting signal for different proteins
  • Taken together, OsSDH2-1 plays a crucial role in leaf senescence and yield formation in rice
  • OsSDH2-1 gene was expressed in all organs tested, with higher expression in leaves, root tips, ovary and anthers
  • OsSDH2-1 protein was targeted to mitochondria
• Connection

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