Hello Elsayed,
Your protocol below seems to be a mix of a variant detection and an
RNA-seq workflow. To build a workflow for RNA-seq, you will want to
compare your steps with the protocols in the link that I sent you.
If you want more examples, many more can be found here (for both RNA-seq
and variant analysis, these are distinct analysis). Some have workflows
that you can import and use directly or modify.
https://wiki.galaxyproject.org/Learn#Other_Tutorials
Shared Data -> Published Pages
In particular, there is a sample workflow in this tutorial that will
help you to understand what the different steps are for and what order
they go in.
https://usegalaxy.org/u/jeremy/p/galaxy-rna-seq-analysis-exercise
Best,
Jen
Galaxy team
On 1/3/14 10:57 AM, Elsayed Hejazy wrote:
*Dear Dr. Jennifer,*
A lot of thanks for your reply its really mean alot for me.
i am still NGS junior i trying to do the following steps kindly give
me the right order for these procedures
Data Description: i have to samples each sample consists of 14 FASTQ
file (7 forward and 7 reverse ) i think this mean its paired end from
Illumina then i will try the following workflow to got best results
1- Drag tow input dataset into workflow one for forward sequences file
and one for reverse to use paired end option in TOPHAT tool later and
when i run this workflow i will select multiple selection for the 7
forward files to analyse all of them at the same time
2- Drag FASTQC and link with last step for each to got if these file
may be illmina 1.8 version or older.
3- Drag FASTQ Groomer and link with last step if files older than 1.8
version to prepare as .FASTQSANGER format.
4- Drag Filter FASTQ and link with last step to remove redundancy of
sequences.
5- Drag FASTQ trimmer to remove unwanted ends of sequenced may occur
6- Drag Manipulate FASTQ and link with last step (i dont know why).
the above six steps done twice to generate to files as output to make
as input for the following steps.
7- Drag TOPHAT for illumina and make it accept paired end files and
link each file generated from QC to TOPHAT this step used to align and
map with reference genome.
8- Drag Cufflinks and link with aligned BAM file generated from TOPHAT
to create an assembly
9- Drag Cuffmerge and link with GTF file from Cufflinks this step to
merge all assemblies generated in Cufflinks
10- Drag Cuffcompare and link with last step to got detailed reports
for accuracy of all generated assemblies.
11- Drag MPileup and link with TOPHAT BAM file to generate file
containing SNPs sites.
12- Drag Pileup-to-Interval and link with MPileup step to filter the
number of output SNPs to successive one or the most accurate. (i dont
know what is the difference between this tool and Filter Pileup).
- i dont know what is the tools used to know the copy number variation
CNV
i need to know how to separate human sequences from sample may
infected with any other sequences (is this at alignment stage)
i need to know the perfect order of steps if this order is not
completely right.
Is this what i should do to make a good NGS workflow got all possible
information form dataset
Really i am so so so sorry for disturbance - waiting your reply
Best Regards,
elsayed
On Thu, Jan 2, 2014 at 6:05 PM, Jennifer Jackson <[email protected]
<mailto:[email protected]>> wrote:
Hello Elsayed,
Protocol help for RNA-seq analysis can be found here:
https://wiki.galaxyproject.org/Support#Tools_on_the_Main_server:_RNA-seq
The QA/QC steps should be done before mapping, on individual
datasets (such as replicates) or on partial or merged datasets as
needed (if that is how the data was sequenced, just be
consistent). Only keep in mind that the larger the dataset, the
more compute some of these steps can require.
Hopefully this helps,
Jen
Galaxy team
On 1/1/14 1:32 AM, Elsayed Hejazy wrote:
i need to know more about the order of steps for RNA Seq data
analysis
Is alignment and assembly should done first to combine all FASTQ
reads into one file and start analysis or i should do Quality
Control ,filtering , trimming and manipulation first and do
alignment and assembly at the end of analysis to use tophat for
example or any other analysis tools in Galaxy
Thank you
elsayed
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--
Jennifer Hillman-Jackson
http://galaxyproject.org
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Jennifer Hillman-Jackson
http://galaxyproject.org
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