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

Question

[tjdrnjsqpf]

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?

[WouterDeCoster]

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

[tjdrnjsqpf]

oops.. Yes it is typo. I fixed it.

Answer 1

[Devon Ryan]

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.