Cutadapt

Cutadapt removes adapter sequences, primers, poly-A tails, and other unwanted sequences from high-throughput sequencing reads to prepare data for accurate downstream genomic and transcriptomic analyses.

Key Features:

• Adapter and primer removal: Identifies and trims adapter sequences and primer regions from sequencing reads.
• Poly-A tail trimming: Detects and removes poly-A tails commonly present in RNA-seq reads to improve alignment and quantification accuracy.
• Parameter customization: Allows specification of parameters for adapter, primer, and tail detection tailored to experimental requirements and sequencing technologies.

Scientific Applications:

• RNA sequencing (RNA-seq): Preprocesses RNA-seq reads by removing adapters and poly-A tails to enable accurate mapping to reference genomes or transcriptomes.
• Metagenomics: Preprocesses metagenomic sequencing data to remove non-biological sequences introduced during library preparation (e.g., MetaGenSense workflows).
• Phylogenetic studies: Removes contaminants and non-biological sequences from input sequences for phylogenetic analyses and platforms such as NGphylogeny.fr.

Methodology:

Scans sequencing reads for known adapter and primer sequences and trims them (including poly-A tails) using exact matching and alignment-based approaches, and handles large high-throughput datasets efficiently.