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lncRNA - Long Non-coding RNAs02:39

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In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
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Beyond the RNA-dependent function of LncRNA genes.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Epigenetics

Background:

  • Long non-coding RNAs (lncRNAs) have gained significant research interest.
  • Research has primarily focused on the regulatory roles of lncRNA transcripts.
  • Emerging evidence suggests lncRNA genes possess functions independent of their RNA products.

Purpose of the Study:

  • To highlight genome-based regulatory functions of lncRNA genes.
  • To explore the diverse mechanisms underlying these gene-level functions.
  • To provide an outlook on determining lncRNA gene functional mechanisms.

Main Methods:

  • Review of existing literature on lncRNA gene functions.
  • Analysis of case studies demonstrating locus-specific regulation.
  • Discussion of experimental approaches for mechanistic elucidation.

Main Results:

  • Transcription of lncRNA loci can exert regulatory control.
  • Mechanisms for genome-based lncRNA functions are varied and complex.
  • Examples of lncRNA genes with non-transcript functions are presented.

Conclusions:

  • lncRNA genes offer regulatory potential through both their transcripts and their transcription.
  • Understanding these diverse mechanisms is crucial for advancing lncRNA research.
  • Further investigation is needed to fully characterize lncRNA gene functions.