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Blast Execution Problem

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Hi, I am trying to have the command line blast work, however, I did not manage to execute it properly. I would appreciate if you can tell me what I am doing wrong. So here are the things I did so far: 1) I downloaded the Win-32 executable file from NCBI/blast/latest (2.2.26). Double-click and install the files under "C:\blast" 2) I went to Environmental Variables window and created variable BLAST with value "C:\blast\bin\", BLASTDB with "C:\blast\db\" and added "C:\blast\bin" to the variable Path 3) Under "C:\blast", I have three folders: bin, doc and db folder that I created to put the fasta database. 4) I downloaded pre-formatted non-redundant (nr) fasta database from NCBI ftp and put it under C:\blast\db 5) I used "formatdb -i nr -p T" command to create index files. 6) Now C:\blast\db has the following files: nr.00.phr, nr.00.pin, nr.00.psq, [...], nr.06.phr, nr.06.pin, nr.06.psq 7) Next I wanted to perform a protein blast search using this command: C:>blastall -p blastp -d nr -i /users/lab512/Desktop/sequence.fas -o /users/lab512/Desktop/blast_output.txt Unfortunately, I get the following error: [blastall 2.2.24] WARNING: Unable to open nr.pin [blastall 2.2.24] WARNING: Unable to open nr.pin [blastall 2.2.24] WARNING: Unable to open nr.pin [blastall 2.2.24] WARNING: Unable to open nr.pin [blastall 2.2.24] WARNING: homosapiens: Unable to open nr.pin [blastall 2.2.24] WARNING: homosapiens: Unable to open nr.pin [blastall 2.2.24] WARNING: homo ...

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