So I have some sequences that don't appear to have ORFs but I want to find what they are similar to. I have been BLASTing them using the NCBI web BLAST tool but this is slow and I want to do this more quickly on my own computer. Problem: I can't find the "nr" database that is used by this web tool. I doownloaded the only nr database on the ncbi ftp but it is protein sequences. Can someone point me in the right direction?