Ncbi Blast Command Line Align Two Sequences
2
3
Entering edit mode
10.4 years ago
Maria ▴ 170

I want to align 2 sequences using ncbi blast command line or bioperl script, I am new to blast and I found out that it compare a sequence to a database but what I need it to compare two sequences like in the web service . how to do it ? Thanks in advance

blast • 23k views
ADD COMMENT
9
Entering edit mode
10.4 years ago
blastn -query file1.fa -subject file2.fa
ADD COMMENT
1
Entering edit mode

The same 2 files when I use as input in the web service I got a result but when I use this command it gives me NO hits found

ADD REPLY
0
Entering edit mode

try to add the option -dust no, -expect 10 (I think that's the syntax. Anyway, you can get the help with blastn -help )

ADD REPLY
0
Entering edit mode

hello sir i am trying this command for my task. but still terminal show error. which i shown below. please ckeck this and help me to solve out this error codon@codon-PC-MY18XRZE4:~/ncbi-blast-2.6.0+/c++/ReleaseMT/build$ blastn -yasl2 variant x1.fasta -sra_data.fasta USAGE blastn [-h] [-help] [-import_search_strategy filename] [-export_search_strategy filename] [-task task_name] [-db database_name] [-dbsize num_letters] [-gilist filename] [-seqidlist filename] [-negative_gilist filename] [-entrez_query entrez_query] [-db_soft_mask filtering_algorithm] [-db_hard_mask filtering_algorithm] [-subject subject_input_file] [-subject_loc range] [-query input_file] [-out output_file] [-evalue evalue] [-word_size int_value] [-gapopen open_penalty] [-gapextend extend_penalty] [-perc_identity float_value] [-xdrop_ungap float_value] [-xdrop_gap float_value] [-xdrop_gap_final float_value] [-searchsp int_value] [-max_hsps_per_subject int_value] [-penalty penalty] [-reward reward] [-no_greedy] [-min_raw_gapped_score int_value] [-template_type type] [-template_length int_value] [-dust DUST_options] [-filtering_db filtering_database] [-window_masker_taxid window_masker_taxid] [-window_masker_db window_masker_db] [-soft_masking soft_masking] [-ungapped] [-culling_limit int_value] [-best_hit_overhang float_value] [-best_hit_score_edge float_value] [-window_size int_value] [-off_diagonal_range int_value] [-use_index boolean] [-index_name string] [-lcase_masking] [-query_loc range] [-strand strand] [-parse_deflines] [-outfmt format] [-show_gis] [-num_descriptions int_value] [-num_alignments int_value] [-html] [-max_target_seqs num_sequences] [-num_threads int_value] [-remote] [-version]

DESCRIPTION Nucleotide-Nucleotide BLAST 2.2.28+

Use '-help' to print detailed descriptions of command line arguments

Error: Unknown argument: "yasl2"

ADD REPLY
1
Entering edit mode
10.4 years ago

Search for already answered posts in Biostars

Blast Two Sequences

ADD COMMENT

Login before adding your answer.

Traffic: 2323 users visited in the last hour
Help About
FAQ
Access RSS
API
Stats

Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

Powered by the version 2.3.6