Sizing up long non-coding RNAs: do lncRNAs have secondary and tertiary structure?

Area of Science:

• Molecular Biology
• Genetics
• Epigenetics

Background:

• Long noncoding RNAs (lncRNAs) are significant regulators in epigenetics, stem cell biology, cancer, signaling, and brain function.
• LncRNAs represent a substantial portion of the transcriptome, with continuous discovery of new transcripts.
• The functional mechanisms of lncRNAs are not fully elucidated, partly due to limited structural data.

Purpose of the Study:

• To review available sequence and secondary structure data for long noncoding RNAs (lncRNAs).
• To explore the potential for determining lncRNA tertiary structures by examining existing RNA structural data and constraints.

Main Methods:

• Literature review of existing lncRNA sequence and secondary structure data.
• Analysis of crystallographic structures from other RNA systems to infer possibilities for lncRNAs.
• Discussion of constraints and potential approaches for lncRNA tertiary structure determination.

Main Results:

• A significant amount of lncRNA sequence and secondary structure information is available.
• There is a notable lack of experimentally determined tertiary structures for lncRNAs.
• Insights from other RNA structures can guide future investigations into lncRNA tertiary structures.

Conclusions:

• Understanding lncRNA structure is critical for deciphering their molecular mechanisms.
• Further research into lncRNA tertiary structures is warranted, leveraging existing RNA structural knowledge.
• Bridging the gap in structural data will advance the study of lncRNAs in various biological processes.