Metalign

Metalign performs alignment-based metagenomic profiling to estimate taxonomic composition and relative abundances from whole-genome shotgun sequencing reads.

Key Features:

• Alignment-Based Approach: Uses alignment-based methods to assign reads to reference genomes for taxonomic profiling.
• Containment Min Hash Technique: Applies a containment min hash strategy to reduce the reference database size prior to alignment, improving computational efficiency.
• Resolution of Multi-Genome Alignments: Resolves reads that align to multiple genomes to estimate organism relative abundances.

Scientific Applications:

• Microbiome profiling: Determine taxonomic composition and relative abundances of microbial communities from whole-genome shotgun sequencing.
• Medicine: Characterize microbial communities relevant to clinical studies and disease research.
• Ecology: Analyze environmental samples for biodiversity assessment and ecological monitoring.

Methodology:

Applies containment min hash to reduce the reference database, performs alignment of whole-genome shotgun sequencing reads to the reduced database, and resolves multi-genome alignments to estimate organism relative abundances.