Question: Removing 5' Adapters from Reads
0
gravatar for hosheaa
15 months ago by
hosheaa • 20
hosheaa • 20 wrote:

Is there a way to remove 5' adapters using Trim Galore? I know that cutadapt has this capability, but does Trim Galore have this capability too? If not, any suggestion using the public Galaxy server how this could be done? Thanks

rna-seq • 681 views
ADD COMMENT • link • modified 15 months ago • written 15 months ago by hosheaa • 20
1
gravatar for hosheaa
15 months ago by
hosheaa • 20
hosheaa • 20 wrote:

Thanks, Jennifer. I think this would be a helpful tool to have available for everyone who are not able to have their own Galaxy.

But to the point at hand, I solved the problem. First, I used "manipulate fastq" to reverse complement the entire fastq file. Then, I used Trim Galore! on the reverse complement of the 5'-adapter to trim it. Then, I used manipulate fastq again to reverse complement the file back again to the way it was. Then, I used Trim Galore! on the 3'-adapter to trim it.

It worked, but it was a lot of extra steps and time.

ADD COMMENT • link written 15 months ago by hosheaa • 20

Thanks for posting back - what you describe is probably the best workaround for now. To make this less tedious going forward, consider grouping the tools into a workflow for reuse.

ADD REPLY • link written 15 months ago by Jennifer Hillman Jackson ♦ 25k
0
gravatar for Jennifer Hillman Jackson
15 months ago by
United States
Jennifer Hillman Jackson ♦ 25k wrote:

Hello,

There currently isn't a tool available at Galaxy Main (http://usegalaxy.org) to trim 5' adaptors. For now, the original cutadapt wrapper tool is the available option (sourced from the Tool Shed for use in your own Galaxy).

I opened a ticket to request that this functionality be added the to existing Trim Galore! wrapper but some other solution may come up. Follow progress here: https://github.com/bgruening/galaxytools/issues/621

Thanks, Jen, Galaxy team

ADD COMMENT • link written 15 months ago by Jennifer Hillman Jackson ♦ 25k
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