[ensembl-dev] Using Ensemble to find TGFb1 and aligning sequence using ClustalW
Giulietta
gspudich at ebi.ac.uk
Mon Apr 22 16:44:29 BST 2013
Hi Paul,
The dev list is really for questions about the API, and local
installations. For questions along the lines of BLAST and how to decide
which transcript to use, it may be better to email us at
helpdesk at ensembl.org
The answer to your question depends on what you are trying to do. What
is your hypothesis or the question you are trying to answer with your
comparison?
Two out of the four splice variants are protein coding, as you can see
in the Transcript Table at the top of Gene and Transcript views (like
this one):
http://www.ensembl.org/Homo_sapiens/Gene/Summary?db=core;g=ENSG00000105329;r=19:41807492-41859816;t=ENST00000221930
(TGFB1-001 and 004 are protein coding).
The first transcript (TGFB-001) is part of the CCDS set, meaning the
coding sequence and protein sequence are agreed upon between several
genomic projects. In other words, TGFB-001 has a high quality (high
confidence) coding sequence.
The second protein-coding transcript in the table (TGFB-004) is not in
the CCDS. If you look at the 'General identifiers' section of the
Transcript Tab, you can find out what the transcript matches to (outside
Ensembl)- in this case it's a TrEMBL cDNA:
http://www.ensembl.org/Homo_sapiens/Transcript/Similarity?db=core;g=ENSG00000105329;r=19:41807492-41859816;t=ENST00000598758
You can see the protein/cDNA sequence for each transcript in the cDNA
link at the left of the Transcript Tab, which might allow you a more
informed choice.
http://www.ensembl.org/Homo_sapiens/Transcript/Sequence_cDNA?db=core;g=ENSG00000105329;r=19:41807492-41859816;t=ENST00000598758
Let us know (on helpdesk at ensembl.org) if you want to discuss this further.
Best wishes,
Giulietta (Ensembl Helpdesk)
On 20/04/2013 09:54, BASIL PAUL Ochieng wrote:
> Hi
> It my first time, exactly a week to use ensemble and do not have
> bioinformatics skills.
> Could you please help me know which part of the sequence is to be
> pasted and run for comparison.
> TGFB1 has 4 variants/transcripts,am i to paste and compare the
> sequence of each variant on BLAST/ClustalW to compare with cDNA?
>
> Thanks
> Paul
> Immunogenetics course
> Manchester
>
>
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