TransLiG

TransLiG assembles de novo transcriptomes from high-throughput RNA-seq by integrating sequence depth and paired-end information through phasing paths and iterative construction of line graphs derived from splicing graphs to improve isoform reconstruction.

Key Features:

• De novo transcriptome assembly: Constructs transcript sequences directly from RNA-seq reads without relying on a reference genome.
• Integration of sequence depth and paired-end information: Leverages read abundance and paired-end connectivity to inform assembly decisions.
• Phasing paths: Uses phasing paths to capture connectivity among exons and reads for improved transcript reconstruction.
• Iterative line-graph construction from splicing graphs: Builds and refines line graphs derived from splicing graphs in iterative steps to resolve transcript structures.
• Isoform resolution: Enhances identification and separation of alternative isoforms in complex transcriptomes.
• Error reduction: Reduces assembly errors through its integrated graph-based and phasing-path methodology.
• Performance: Demonstrates improvements in accuracy and computational efficiency compared with existing de novo assemblers.
• Empirical validation: Evaluated using synthetic datasets and real RNA-seq data from diverse biological samples.

Scientific Applications:

• De novo transcriptome reconstruction: Generating transcriptomes from RNA-seq data when references are unavailable or incomplete.
• Alternative splicing analysis: Resolving and quantifying alternative splicing isoforms within complex transcriptomes.
• Isoform discovery and characterization: Identifying novel isoforms and refining transcript models from sequencing data.
• Genomics and transcriptomics studies: Supporting studies that require precise RNA sequence reconstruction and isoform-level resolution.

Methodology:

Integrates sequence depth and paired-end information via phasing paths and iteratively constructs line graphs from splicing graphs to refine transcriptome assembly and resolve isoforms.