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Trouble obtaining chromosome number using standalone blastn

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Hello,

I'm having trouble obtaining the exact chromosome number, when using standalone BLAST. My current setting is like below:

/...BLAST/blast-2.2.29+/bin/blastn -db GPIPE/9606/105/GCF_000001405.25_top_level -query test.fasta -out test.out -task blastn -outfmt 6 -remote -word_size=15

,where the database is GRCh37.

The result looks like:

sample1    gi|441431411|ref|NW_004166863.1|    100.00    41    0    0    38    78    527422    527382    1e-012    77.0
 

As you can see, there is gene id and the position of the reference sequence, but there is no chromosome number. I couldn't find this option in the format specifiers blast provided either. I know I could get what I want by standalone BLAT, but I need to ensure BLAST also works, because it has a windows version. I also understand if I use a XML or query-anchored format, I could locate the chromosome information in a hard way. However I'm just disappointed that I can't find it in the tabular format... Could some help me please? 

Thank you!

Helene


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