This is a test version of Biostars. For the public version, visit https://www.biostars.org.
Galaxy Bowtie2 fastq recognition

So Bowtie2 in Galaxy does not recognize my fastq which is output from BBMap Clumpify, has the following message under the input file box:

Nucleotide-space: Must have Sanger-scaled quality values with ASCII offset 33

Wondering how I can change the fastq format so it is recognized. Thanks.

galaxy bowtie2 fastq

1 answer

You may have to fastqgroom the file even though it should be in the correct sanger format already. Or use the "pencil" icon to edit the properties --> Datatype tab --> Make sure it is set to fastqsanger/fastqsanger.gz (depending on what format the file is in --> Save.

Its odd because I checked it with BBMap:

 bash testformat.sh

and got the following:

sanger  fastq   gz  single-ended    76bp

Odd things happen once you move away from the command line :-)

Yes this is generally out of expediency as I am creating several fresh Bowtie2 indexes in the CL.

Why not stick with BBMap suite for downstream analysis? Check the edited answer above if you need to continue with Galaxy.

Log in to answer this question.