[mart-dev] How to get the 5kb upstream of TSS and 500bp downstream of TSS?

[Peng Yu]

I want to get the DNA sequence between -5kb and 500bp around TSS of a gene.

I went to
http://www.ensembl.org/biomart/martview/a90f00892a48e04d438f762f551bf48a/a90f00892a48e04d438f762f551bf48a

select Ensembl56 as database, Mus Musculus as species, go to Filters
and fill the 'Id list limit' form to add the required geneIds, then go
to Attributes, select Sequences (Unspliced (Gene)) and then check
'Upstream Flank -
5000'.

If the gene is in the negative strand, I'm wondering whether it gives
me the negative strand or the positive strand.