SeqTrimMap

SeqTrimMap maps short sequencing reads produced by the AB SOLiD platform in color space to sequentially trim linker fragments and mitigate color-calling errors for accurate characterization of small RNAs such as microRNAs (miRNAs).

Key Features:

• Short-read mapping: Maps short reads from high-throughput sequencing, particularly AB SOLiD, to reference genomes in color space.
• Color-space encoding support: Processes SOLiD color-space encoding, in which reads are encoded as colors and each nucleotide is represented by two consecutive colors.
• Sequential trimming and mapping: Employs a sequential trimming and mapping approach specifically tailored for small RNA sequences.
• Linker removal: Systematically trims reads to remove linker fragments that exceed the biological length of small RNAs.
• 3'-end error mitigation: Mitigates color-calling errors that tend to increase toward the 3' end of reads.
• First-nucleotide handling: Addresses the potential loss of the first nucleotide during mapping in color space.
• miRNA-focused accuracy: Refines read preparation to enhance the accuracy of microRNA (miRNA) characterization.

Scientific Applications:

• miRNA characterization: Characterizing microRNAs (miRNAs) from AB SOLiD color-space sequencing data.
• Small RNA mapping: Mapping and analysis of small RNAs after linker removal and error mitigation.
• Error versus polymorphism discrimination: Leveraging color-space encoding to aid differentiation between sequencing errors and polymorphisms.

Methodology:

Performs sequential trimming of reads to remove linker fragments and mitigate color-calling errors, then maps the processed reads to reference genomes in SOLiD color space while accounting for potential loss of the first nucleotide.