Rationalizing the effects of RNA modifications on protein interactions

Area of Science:

• Molecular Biology
• Genetics
• Bioinformatics

Background:

• RNA modifications are critical regulators of gene expression.
• These modifications alter RNA structure and influence interactions with RNA-binding proteins (RBPs).

Purpose of the Study:

• To investigate the impact of N6-methyladenosine (m6A), A-to-I editing, and pseudouridine (Ψ) on RNA secondary structure and RBP interactions.
• To classify RBPs based on their binding specificity to RNA modifications and structural dependence.
• To develop a predictive algorithm for RNA modification effects on protein-RNA binding.

Main Methods:

• Genome-wide analysis of RNA secondary structure and protein-RNA interaction data.
• Classification of RBPs into modification-specific/structure-independent and modification-unspecific/structure-dependent categories.
• Development and application of the catRAPID 2.2 RNA modifications algorithm.

Main Results:

• Identified distinct binding behaviors of RBPs, such as m6A readers (e.g., YTHDF2) showing modification-specific binding.
• Observed that A-to-I editing generally reduces protein interactions, while Ψ enhances RNA stability with variable effects.
• Demonstrated the utility of the catRAPID 2.2 algorithm in predicting modification-induced changes in protein-RNA binding.

Conclusions:

• RNA modifications significantly modulate protein-RNA interactions through both direct recognition and structural alterations.
• The catRAPID 2.2 algorithm provides a valuable tool for understanding and predicting the functional consequences of RNA modifications.
• This work offers new insights into RNA biology and potential applications in RNA engineering.