tximport of 3 tagged RNA-seq counts from Salmon for downstream analysis with DESeq2
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Entering edit mode
rbenel ▴ 40
@rbenel-13642
Last seen 20 months ago
Israel

Hi, 

A 3' tagged RNAseq method was used to sequence my data, I then used Salmon for mapping and quantification. My question is about using tximport for downstream DESeq2. In the tximport workflow it says, "we recommend to use the original counts, e.g. txi$counts as a counts matrix, e.g. providing to DESeqDataSetFromMatrix". As DESeqDataSetFromMatrix only takes integers, is rounding after txi$counts appropriate?  

txi <- tximport(files, type = "salmon", tx2gene = tx2gene, countsFromAbundance="no") 

cts <- txi$counts
cts <- round(cts)

dds <- DESeqDataSetFromMatrix(cts,
                               colData = MetaData,
                               design = ~ ID + ... )

 

Thanks! 

tximport deseq2 rnaseq 3' tagged RNA • 1.1k views
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@mikelove
Last seen 44 minutes ago
United States

Yes that’s recommended for 3’ tagged counts.

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