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词汇 RNA processing
分类 英语词汇 英语翻译词典
释义

RNA processing

中文百科

转录后修饰 Post-transcriptional modification

（重定向自RNA processing）
Regulatory sequence Regulatory sequence Enhancer /silencer Promoter 5'UTR Open reading frame 3'UTR Enhancer /silencer Proximal Core Start Stop Terminator Transcription DNA Exon Exon Exon Intron Intron Post-transcriptionalmodification Pre-mRNA Protein coding region + 5' cap + Poly-A tail Translation MauremRNA Protein The structure of a eukaryotic protein-coding gene. Regulatory sequence controls when and where expression occurs for the protein coding region (red). Promoter and enhancer regions (yellow) regulate the transcription of the gene into a pre-mRNA which is modified to add a 5' cap and poly-A tail (grey) and remove introns. The mRNA 5' and 3' untranslated regions (blue) regulate translation into the final protein product.
Polycistronic operon Regulatory sequence Regulatory sequence Enhancer /silencer Operator Promoter 5'UTR ORF UTR ORF 3'UTR Enhancer /silencer Start Stop Start Stop Terminator Transcription DNA RBS Protein coding region RBS Protein coding region Translation mRNA Protein The structure of a prokaryotic operon of protein-coding genes. Regulatory sequence controls when expression occurs for the multiple protein coding regions (red). Promoter, operator and enhancer regions (yellow) regulate the transcription of the gene into an mRNA. The mRNA untranslated regions (blue) regulate translation into the final protein products.

转录后修饰（RNA修饰，或称修饰RNA）是真核细胞中，将初级转录RNA转化为成熟RNA的加工过程。一个很好的例子就是前mRNA转化为成熟的mRNA，其中包括剪接，并发生在蛋白质生物合成之前。这一加工过程对于真核生物基因组的正确翻译至关重要，这是因为真核生物的初级转录RNA中包含既包括用于编码蛋白质的外显子又包含非编码的内含子。

英语百科

Post-transcriptional modification 转录后修饰

（重定向自RNA processing）
Regulatory sequence Regulatory sequence Enhancer /silencer Promoter 5'UTR Open reading frame 3'UTR Enhancer /silencer Proximal Core Start Stop Terminator Transcription DNA Exon Exon Exon Intron Intron Post-transcriptionalmodification Pre-mRNA Protein coding region + 5' cap + Poly-A tail Translation MauremRNA Protein The structure of a eukaryotic protein-coding gene. Regulatory sequence controls when and where expression occurs for the protein coding region (red). Promoter and enhancer regions (yellow) regulate the transcription of the gene into a pre-mRNA which is modified to add a 5' cap and poly-A tail (grey) and remove introns. The mRNA 5' and 3' untranslated regions (blue) regulate translation into the final protein product.
Polycistronic operon Regulatory sequence Regulatory sequence Enhancer /silencer Operator Promoter 5'UTR ORF UTR ORF 3'UTR Enhancer /silencer Start Stop Start Stop Terminator Transcription DNA RBS Protein coding region RBS Protein coding region Translation mRNA Protein The structure of a prokaryotic operon of protein-coding genes. Regulatory sequence controls when expression occurs for the multiple protein coding regions (red). Promoter, operator and enhancer regions (yellow) regulate the transcription of the gene into an mRNA. The mRNA untranslated regions (blue) regulate translation into the final protein products.

Post-transcriptional modification or Co-transcriptional modification is a process in cell biology by which, in eukaryotic cells, primary transcript RNA is converted into mature RNA. A notable example is the conversion of precursor messenger RNA into mature messenger RNA (mRNA), which includes splicing and occurs prior to protein synthesis. This process is vital for the correct translation of the genomes of eukaryotes, including humans, because the primary RNA transcript that is produced, as a result of transcription, contains both exons, which are either coding sections of the transcript or are important sequences involved in translation, and introns, which are the non-coding sections of the primary RNA transcript.
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