期刊
NATURE CHEMICAL BIOLOGY
卷 17, 期 5, 页码 601-607出版社
NATURE PORTFOLIO
DOI: 10.1038/s41589-021-00763-0
关键词
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资金
- National Natural Science Foundation of China [31671382, 32000462]
- Huaqiao University
- Postgraduates Innovative Fund in Scientific Research from Huaqiao University
- New York University Abu Dhabi Research Institute
- NYUAD Division of Science [73 71210 CGSB9, AD060]
This study identified a naturally occurring ribozyme in humans through a genome-wide approach, revealing its evolutionary path and potential functional role in vivo.
Although naturally occurring catalytic RNA molecules-ribozymes-have attracted a great deal of research interest, very few have been identified in humans. Here, we developed a genome-wide approach to discovering self-cleaving ribozymes and identified a naturally occurring ribozyme in humans. The secondary structure and biochemical properties of this ribozyme indicate that it belongs to an unidentified class of small, self-cleaving ribozymes. The sequence of the ribozyme exhibits a clear evolutionary path, from its appearance between similar to 130 and similar to 65 million years ago (Ma), to acquiring self-cleavage activity very recently, similar to 13-10 Ma, in the common ancestors of humans, chimpanzees and gorillas. The ribozyme appears to be functional in vivo and is embedded within a long noncoding RNA belonging to a class of very long intergenic noncoding RNAs. The presence of a catalytic RNA enzyme in lncRNA creates the possibility that these transcripts could function by carrying catalytic RNA domains.
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