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- Download Hm_dna.fa from
http://www.tbi.univie.ac.at/~xtof/Leere/300632/Data/2802_Hm_dna.fasta
- Go to GeneMark (frame-by-frame)
http://exon.gatech.edu/genemark/fbf.cgi and upload
Hm_dna.fa. Choose B. subtilis as closest species (Running
Options)
- save the results on you computer
- Convert the fasta file (.fa) to GenBank format (.gb) with the
tool Readseq
http://iubio.bio.indiana.edu/cgi-bin/readseq.cgi. Now the
sequence has line numbering.
- Can you find the Shine-Dalgano sequence (AGGAGG) in each frame
predicted by GeneMark?
- Do another gene prediction predict with Glimmer, a IMM
(interpolated markhov model) based model
Glimmer v3.
- Upload Hm_dna.fa, select ``Glimmer Genes'', choose
``B. subtilis'' as closest species
- Retrieve results by clicking "Get Summary'', the select ``Text
Table''.
- Compare the results from both prediction, especially the
boundaries of the predicted genes (start-end) and their
orientation. Which program predicts more genes and how would you
explain this?
Christoph Flamm
2009-01-06