Not all exons are protein coding: Addressing a common misconception.
Not all exons are protein coding: Addressing a common misconception.
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并非所有外显子都是蛋白质编码:解决一个常见的误解。
DOI:
10.1016/j.xgen.2023.100296
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发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Aspden JL
中科院分区:
文献类型:
--
作者:
Aspden JL
Exons are regions of DNA that are transcribed to RNA and retained after introns are spliced out. However, the term "exon" is often misused as synonymous to "protein coding," including in some literature and textbook definitions. In contrast, only a fraction of exonic sequences are protein coding (<30% in humans). Both exons and introns are also present in untranslated regions (UTRs) and non-coding RNAs. Misuse of the term exon is problematic, for example, "whole-exome sequencing" technology targets <25% of the human exome, primarily regions that are protein coding. Here, we argue for the importance of the original definition of an exon for making functional distinctions in genetics and genomics. Further, we recommend the use of clearer language referring to coding exonic regions and non-coding exonic regions. We propose the use of coding exome sequencing, or CES, to more appropriately describe sequencing approaches that target primarily protein-coding regions rather than all transcribed regions.
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影响因子:
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