AS-EAST: a functional annotation tool for putative proteins encoded by alternatively spliced transcripts.

Area of Science:

• Genomics
• Proteomics
• Bioinformatics

Background:

• Alternative splicing (AS) generates diverse protein isoforms from a single gene.
• Understanding the functional impact of AS is crucial for molecular biology.
• Existing tools may not comprehensively assess functional consequences of AS-driven protein alterations.

Purpose of the Study:

• To introduce AS-EAST, an online tool for functional annotation of proteins from alternative splicing.
• To enable users to evaluate functional domains within AS-altered protein regions.
• To facilitate inference of altered inter-molecular interactions based on 3D structures.

Main Methods:

• Input of transcript sequences to identify AS-altered regions in putative proteins.
• Analysis of functional domain presence within altered regions.
• Assessment of AS event impact on protein interaction residues using 3D structural data.

Main Results:

• AS-EAST identifies specific protein regions affected by alternative splicing events.
• The tool allows evaluation of whether critical functional domains are included or excluded in altered regions.
• It predicts potential loss of inter-molecular interactions by analyzing effects on key residues.

Conclusions:

• AS-EAST provides a valuable resource for functional annotation of AS-generated proteins.
• The tool aids in prioritizing experimental validation of novel splice isoforms.
• It enhances the understanding of alternative splicing's role in protein function and networks.