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Paired-end SRA data comes out as a Single-end

I tried to download RNA-Seq data with accession SRX286028 (NCBI SRA data). It is Paired-end dataset and has multiple runs files (SRR870465, SRR870466, SRR870467, SRR870507, SRR870508, SRR870509, SRR870516, SRR870522, SRR870524, SRR870525).

And I decompressed all to forward and reverse files with "--split-3" sra-toolkit parameters.

All samples were split into 2 files (forward and reverse) successfully except SRR874066. It was split into a single .fastq file.

Is there a problem with the data or my sra-toolkit parameter?

rna-seq software error

SRR87406 is not part of this dataset. Did you mean SRR870466?

1 answer

It looks like the data was uploaded like that, so there's nothing you can do on your end to reliably change that. My guess is that there were issues with read #2.

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