How to download the Homo_sapiens.GRCh38.100.gtf and Homo_sapiens.GRCh38.dna.primary_assembly.fa files for my analysis?
I am trying to perform STAR alignment and I need the reference files for indexing. I would like to know how to download the Homo_sapiens.GRCh38.100.gtf and Homo_sapiens.GRCh38.dna.primary_assembly.fa files so that I can use my following code for indexing :
STAR --runMode genomeGenerate \
--genomeDir ${FILE_PATH}/star_gff_genome_index \
--genomeFastaFiles ${FILE_PATH}/annotation/Homo_sapiens.GRCh38.dna.primary_assembly.fa \
--sjdbGTFfile ${FILE_PATH}/annotation/Homo_sapiens.GRCh38.100.gtf \
--sjdbOverhang 100 \
--runThreadN 21
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http://ftp.ensembl.org/pub/release-104/fasta/homo_sapiens/dna/
http://ftp.ensembl.org/pub/release-104/gtf/homo_sapiens/
Change the links to release 100 if you really want the same annotation version.
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Use the one from GENCODE. That's what the authors also recommend using.
https://www.gencodegenes.org/human/
Check the STAR manual. They refer to the specific versions that you need.
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use wget !