The PRC2-binding long non-coding RNAs in human and mouse genomes are associated with predictive sequence features.

Area of Science:

• Molecular Biology
• Epigenetics
• Genomics

Background:

• Long non-coding RNAs (lncRNAs) regulate cellular processes, including epigenetics, by interacting with proteins.
• Specificity mechanisms for lncRNA-protein interactions, particularly with Polycomb repressive complex 2 (PRC2), are not well understood.

Purpose of the Study:

• To identify sequence features distinguishing lncRNAs that bind to PRC2.
• To explore the evolutionary conservation and functional significance of these features.

Main Methods:

• Computational analysis of sequence composition in human and mouse lncRNAs known to interact with PRC2.
• Development of a pipeline analyzing sequences as transitions between adjacent nucleotides.

Main Results:

• PRC2-binding lncRNAs exhibit distinct, evolutionarily conserved sequence features.
• These features allow for accurate discrimination between PRC2-binding and non-binding lncRNAs.
• Specific lncRNA fragments enriched in these features demonstrate strong PRC2 binding and high cross-species conservation.

Conclusions:

• Sequence composition is a key determinant of PRC2-lncRNA interactions.
• Identified sequence features and conserved fragments offer insights into lncRNA function in epigenetic regulation.