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About:Let-7 microRNA precursor

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The Let-7 microRNA precursor was identified from a study of developmental timing in C. elegans, and was later shown to be part of a much larger class of non-coding RNAs termed microRNAs. miR-98 microRNA precursor from human is a let-7 family member. Let-7 miRNAs have now been predicted or experimentally confirmed in a wide range of species (MIPF0000002). miRNAs are initially transcribed in long transcripts (up to several hundred nucleotides) called primary miRNAs (pri-miRNAs), which are processed in the nucleus by Drosha and Pasha to hairpin structures of about 70 nucleotide. These precursors (pre-miRNAs) are exported to the cytoplasm by exportin5, where they are subsequently processed by the enzyme Dicer to a ~22 nucleotide mature miRNA. The involvement of Dicer in miRNA processing demons

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  • let-7 ist eine regulatorische microRNA mit 21 Nukleotiden, die in dem Fadenwurm Caenorhabditis elegans (C. Elegans) entdeckt wurde. Der Name steht für „letal (tödlich) 7“. Mutationen im Gen für let-7 verursachen Störungen in der zeitlichen Entwicklung von C.elegans. Dabei werden wichtige Schritte ausgelassen oder mehrfach wiederholt. Der erwachsene Wurm ist im Ergebnis deformiert oder nicht lebensfähig (daher die Bezeichnung „letal“). Die let-7-RNA ist komplementär zu Elementen in der 3'-untranslatierten (3'-UTR) Region der Entwicklungsgene , lin-28, und und reguliert so deren Übersetzung (Translation, Proteinbiosynthese). Das Gen für let-7 ist offenbar evolutionär hochkonserviert und steuert die zeitliche Entwicklung vieler Tiergruppen, so neben Fadenwürmern Insekten, Weichtiere und Wirbeltiere. (de)
  • The Let-7 microRNA precursor was identified from a study of developmental timing in C. elegans, and was later shown to be part of a much larger class of non-coding RNAs termed microRNAs. miR-98 microRNA precursor from human is a let-7 family member. Let-7 miRNAs have now been predicted or experimentally confirmed in a wide range of species (MIPF0000002). miRNAs are initially transcribed in long transcripts (up to several hundred nucleotides) called primary miRNAs (pri-miRNAs), which are processed in the nucleus by Drosha and Pasha to hairpin structures of about 70 nucleotide. These precursors (pre-miRNAs) are exported to the cytoplasm by exportin5, where they are subsequently processed by the enzyme Dicer to a ~22 nucleotide mature miRNA. The involvement of Dicer in miRNA processing demonstrates a relationship with the phenomenon of RNA interference. (en)
  • let-7是最早发现的两种microRNA之一(第一种是lin-4),发现于模式生物秀麗隱桿線蟲的基因组中,之后通过BLAST在果蝇和人类基因组中发现了同源物,形成了let-7非编码RNA家族。 (zh)
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  • Predicted secondary structure and sequence conservation of let-7 (en)
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  • RF00027 (en)
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  • MI0000001 (en)
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  • MIPF0000002 (en)
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  • let-7 microRNA precursor (en)
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  • RF00027 (en)
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  • let-7 (en)
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  • let-7是最早发现的两种microRNA之一(第一种是lin-4),发现于模式生物秀麗隱桿線蟲的基因组中,之后通过BLAST在果蝇和人类基因组中发现了同源物,形成了let-7非编码RNA家族。 (zh)
  • let-7 ist eine regulatorische microRNA mit 21 Nukleotiden, die in dem Fadenwurm Caenorhabditis elegans (C. Elegans) entdeckt wurde. Der Name steht für „letal (tödlich) 7“. Mutationen im Gen für let-7 verursachen Störungen in der zeitlichen Entwicklung von C.elegans. Dabei werden wichtige Schritte ausgelassen oder mehrfach wiederholt. Der erwachsene Wurm ist im Ergebnis deformiert oder nicht lebensfähig (daher die Bezeichnung „letal“). (de)
  • The Let-7 microRNA precursor was identified from a study of developmental timing in C. elegans, and was later shown to be part of a much larger class of non-coding RNAs termed microRNAs. miR-98 microRNA precursor from human is a let-7 family member. Let-7 miRNAs have now been predicted or experimentally confirmed in a wide range of species (MIPF0000002). miRNAs are initially transcribed in long transcripts (up to several hundred nucleotides) called primary miRNAs (pri-miRNAs), which are processed in the nucleus by Drosha and Pasha to hairpin structures of about 70 nucleotide. These precursors (pre-miRNAs) are exported to the cytoplasm by exportin5, where they are subsequently processed by the enzyme Dicer to a ~22 nucleotide mature miRNA. The involvement of Dicer in miRNA processing demons (en)
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  • Let-7 (de)
  • Let-7 microRNA precursor (en)
  • Let-7 (zh)
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