
Databases for use with BLAST
---------------------------
The following databases are currently or future available
for BLAST searches:
SW-WGS-RAMEN-CONTIGS Silkworm (p50, 'Daizo' strain) whole genome shotgun (WGS), Ramen assemble contigs
SW-CDNA-PARTIAL-ALL Silkworm cDNA partial sequences from KAIKOcDNA database
SW-CDNA-PARTIAL-CLUST Silkworm cDNA partial sequences (clustered) from KAIKOcDNA database
Available search programs
-------------------------
blastn - Comparing a nucleotide query sequence
against a nucleotide sequence database
blastp - Comparing an amino acid query sequence
against a protein sequence database
blastx - Comparing a nucleotide query sequence translated
in all reading frames against a protein sequence database
tblastn - Comparing a protein query sequence against a nucleotide sequence
database dynamically translated in all reading frames
tblastx - Comparing the six-frame translations of a nucleotide query
sequence against the six-frame translations of a nucleotide
sequence database.
Please note that tblastx program cannot be used with the DNA,
DDBJ, EMBL, GENBANK and JAPIO databases.
Parameters
---------------------
program
Specify the search program. Choose one of the following programs.
blastn | blastp | blastx | tblastn | tblastx
No default, YOU CANNOT OMIT THIS OPTION.
Please confer "Available search programs" section.
datalib
Specify the databases in which homologous sequences are searched.
Choose from following databases.
SW-CDNA-PARTIAL-ALL | SW-CDNA-PARTIAL-CLUST
SW-WGS-RAMEN-CONTIGS
No default, YOU CANNOT OMIT THIS OPTION.
Please confer "Databases for use with BLAST" section.
wordsize
Specify the word size. You had better not change the wordsize
other than 11 for blastn. [integer]
Default value: blastn=11, others=3
Maximum Minimum
-----------------------
blastn 14 7
others 4 2
descriptions
Specify the number of one-line descriptions. [integer]
Default value: 100
alignments
Specify the number of alignments to show. [integer]
Default value: 100
expect
Specify the expected number of homologous sequences
in the database. If you need to get more sequences
with lower homology score, increase the "expect" value.
If you need only sequences with very high homology scores,
decrease the value. [Real]
Default value: 10.0
match (blastn only)
Specify the reward for a nucleotide match. [integer]
Default value: 1
mismatch (blastn only)
Specify the penalty for a nucleotide mismatch. [integer]
Default value: -3
view
Specify the alignment view options.
View parameter table:
0 = pairwise
1 = master-slave showing identities
2 = master-slave no identities
3 = flat master-slave, show identities
4 = flat master-slave, no identities
5 = master-slave no identities and blunt ends
6 = flat master-slave, no identities and blunt ends
7 = XML Blast output
Default value: 0
filter
Specify the filter query sequence (DUST with blastn, SEG with others).
SEG program is for identifying and masking segments of low compositional
complexity in amino acid sequences. [T/F]
Default value: T
gap_open
Specify the cost to open a gap
(zero invokes default behavior). [Integer]
Default value: blastn = 5, others = See "gap_extend"
gap_extend
Specify the cost to extend a gap
(zero invokes default behavior). [Integer]
Default value: blastn = 2, others = See the following
Sets of gap_open and gap_extend values (except blastn):
gap_open gap_extend
---------------------
11 1(default)
10 1
9 2
8 2
dropoff
Specify X dropoff value for gapped alignment (in bits)
(zero invokes default behavior). [integer]
Default value: 0
gi
Specify GI's in deflines. [T/F]
Default value: F
extend_hit
Specify the threshold for extending hits. [integer]
Default value: 0
gap_align (not available with tblastx)
Perform gapped alignment [T/F]
Default value: T
query_code (blastx only)
Specify Query Genetic code to be used in blastx translation
of the query.
Query genetic code table:
1 = Standard
2 = Vertebrate Mitochondrial
3 = Yeast Mitochondrial
4 = Mold Mitochondrial
5 = Invertebrate Mitochondrial
6 = Ciliate Macronuclear
9 = Echinodermate Mitochondrial
10 = Euplotid Nuclear
11 = Bacterial
12 = Alternative Yeast Nuclear
13 = Ascidian Mitochondrial
14 = Flatworm Mitochondrial
15 = Blepharisma Macronuclear
Default value: 1
