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Spliced Transcripts Alignment to a Reference (STAR) is an ultrafast RNA-seq aligner.

STAR (Spliced Transcripts Alignment to a Reference) is a standalone aligner specifically designed for RNA-seq data. It employs a seed-based approach, enabling ultrafast and accurate alignment of RNA-seq reads to a reference genome. STAR excels at detecting splice junctions and handling large mammalian genomes with substantial memory requirements (16-32GB RAM). Its architecture involves two main stages: seed searching and spliced alignment. It utilizes maximal mappable prefix (MMP) search to efficiently identify potential alignment locations, followed by precise spliced alignment using a dynamic programming approach. Use cases include gene expression quantification, isoform discovery, and variant calling in RNA-seq experiments.
STAR (Spliced Transcripts Alignment to a Reference) is a standalone aligner specifically designed for RNA-seq data.
Explore all tools that specialize in ultrafast read mapping. This domain focus ensures STAR delivers optimized results for this specific requirement.
Explore all tools that specialize in detection via spliced alignment. This domain focus ensures STAR delivers optimized results for this specific requirement.
Explore all tools that specialize in support for gene expression quantification. This domain focus ensures STAR delivers optimized results for this specific requirement.
STAR efficiently detects and aligns reads across splice junctions using a two-pass mapping approach, enhancing accuracy in transcriptome analysis.
Leverages a maximal mappable prefix (MMP) search algorithm and efficient indexing to achieve high alignment speeds.
Designed to handle large mammalian genomes with reasonable memory requirements (16-32GB RAM).
STAR can discover novel splice junctions directly from the RNA-seq data, without relying on pre-annotated databases.
Supports multiple output formats, including SAM and BAM, facilitating integration with downstream analysis tools.
Download the latest STAR release from GitHub.
Uncompress the downloaded file using tar -xzf STAR-2.7.11b.tar.gz.
Navigate to the STAR source directory using cd STAR-2.7.11b/source.
Compile STAR using make STAR.
For processors without AVX support, specify the SIMD architecture (e.g., make STAR CXXFLAGS_SIMD=sse).
Add the STAR executable to your system's PATH.
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"STAR is highly regarded for its speed and accuracy in RNA-seq alignment, making it a favorite in the genomics community."
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