DeleteomeTools: Utilizing a compendium of yeast deletion strain transcriptomes to identify co-functional genes

Area of Science:

• Yeast genetics
• Systems biology
• Computational biology

Background:

• Understanding gene function is crucial for biological research.
• The Deleteome compendium provides genome-wide yeast single-gene deletion transcriptomes.
• Predictive tools are needed to leverage this data for functional genomics.

Purpose of the Study:

• To introduce DeleteomeTools, an R package for predicting gene function using the Deleteome compendium.
• To demonstrate the package's ability to identify functional relationships between genes based on transcriptomic signatures.
• To experimentally validate a novel gene function prediction made by the software.

Main Methods:

• Utilizing the Deleteome compendium of yeast single-gene deletion transcriptomes.
• Developing functions within the R package to identify similarities in transcriptomic signatures of deletion strains.
• Employing differential expression signatures to quantify strain similarity.
• Experimental validation of predicted gene functional relationships.

Main Results:

• DeleteomeTools successfully predicted a novel functional relationship between the yeast nucleoporin Nup170 and the Ctf18-RFC complex.
• This prediction was experimentally confirmed, revealing a new link between nuclear pore complexes and DNA replication.
• The package accurately predicted a majority of existing Gene Ontology (GO) biological process annotations.

Conclusions:

• DeleteomeTools is an effective R package for predicting gene function in yeast.
• The method of using differential expression signatures offers a unique approach to discovering functional relationships.
• The software has the potential to uncover previously undetected functional links in biological systems.