Understanding exactly how interactions between RNA molecules,  proteins, and other molecules occur has remained a scientific challenge. However, a new study has just provided the solution.

Researchers at Baylor College of Medicine, along with contributors from collaborating institutions, have developed a technique called multi-site DMS-MaP (msDMS-MaP). This new method provides a more efficient way to identify complex RNA structures and the protein-binding sites associated with them.

As corresponding author Anthony M. Mustoe explained:

"RNA molecules perform many functions inside cells. While RNA is mostly known for its role as a messenger that carries genetic instructions from DNA to make proteins, RNAs also coordinate and regulate many other cellular processes, and they accomplish this by binding proteins and other molecules."

Studying these structures has traditionally required complicated laboratory procedures that can be labor-intensive and may not always produce clear answers. The newly developed approach streamlines the process by combining structural mapping and protein interaction analysis into a single experimental workflow.

According to Mustoe:

"An important step to better understand cellular processes involving RNA is to be able to define RNA 3D structures that are key to those processes, as well as their dynamics."

The researchers demonstrated the power of the technique by tackling a question that has challenged biochemists for roughly half a century: how RNA folding contributes to the formation of ribosomes. 

Ribosomes are the molecular machines responsible for producing proteins. The team used bacterial ribosomes as a model system and discovered that ribosomal RNA contains multiple independently folded structural regions that correspond closely with protein-binding locations involved in ribosome assembly.

Mustoe described the new approach by saying:

"Current biochemical approaches for identifying RNA structures that bind to specific proteins or drugs are complex and laborious and sometimes do not provide answers. We have developed an innovative, one step biochemical approach called multi-site DMS-MaP (msDMS-MaP) that allows us to identify RNA 3D structures and protein binding sites that are crucial to specific cell functions."

The method could make advanced RNA structural studies more accessible to research groups worldwide. It could also provide valuable information for designing more effective RNA-targeted therapies and next-generation RNA vaccines.

Reflecting on the broader impact of the work, Mustoe stated:

"We found that msDMS-MaP is a powerful strategy for resolving RNA 3D structures and protein binding sites that are normally hidden to existing methods. Having this information helps us better understand how RNAs work in normal cellular processes and how things go wrong in disease."

Read the full article here for additional details. 

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