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syco |
syco may is a frame-specific gene finder that tries to recognize protein coding sequences by virtue of the similarity of their codon usage to a codon frequency table. Given a codon usage file and an input nucleotide sequence, syco draws a plot of the synonymous codon usage Gribskov statistic calculated for windows over the sequence. The same data may be written to an output file. syco finds regions of each forward reading frame of a nucleic acid sequence that show strong codon preference. syco is useful for locating protein coding regions, determining their reading frames, estimating the level of expression of a gene, and locating nucleic acid sequencing errors. It is essential to use the correct codon usage file for the species.
% syco -plot -cfile Epseae.cut Draw synonymous codon usage statictic plot for a nucleotide sequence Input nucleotide sequence: tembl:x13776 Graph type [x11]: ps Created syco.ps |
Go to the input files for this example
Go to the output files for this example
Standard (Mandatory) qualifiers (* if not always prompted):
[-sequence] sequence Nucleotide sequence filename and optional
format, or reference (input USA)
-cfile codon Codon usage file
* -graph xygraph [$EMBOSS_GRAPHICS value, or x11] Graph type
(ps, hpgl, hp7470, hp7580, meta, cps, x11,
tekt, tek, none, data, xterm, png, gif)
* -outfile outfile [*.syco] Output file name
Additional (Optional) qualifiers: (none)
Advanced (Unprompted) qualifiers:
-window integer [30] Averaging window (Any integer value)
-uncommon boolean [N] Show common codon usage
-minimum float [.15] Minimum value for a common codon
(Number from 0.000 to 0.990)
-[no]plot toggle [Y] Produce plot
Associated qualifiers:
"-sequence" associated qualifiers
-sbegin1 integer Start of the sequence to be used
-send1 integer End of the sequence to be used
-sreverse1 boolean Reverse (if DNA)
-sask1 boolean Ask for begin/end/reverse
-snucleotide1 boolean Sequence is nucleotide
-sprotein1 boolean Sequence is protein
-slower1 boolean Make lower case
-supper1 boolean Make upper case
-sformat1 string Input sequence format
-sdbname1 string Database name
-sid1 string Entryname
-ufo1 string UFO features
-fformat1 string Features format
-fopenfile1 string Features file name
"-cfile" associated qualifiers
-format string Data format
"-graph" associated qualifiers
-gprompt boolean Graph prompting
-gdesc string Graph description
-gtitle string Graph title
-gsubtitle string Graph subtitle
-gxtitle string Graph x axis title
-gytitle string Graph y axis title
-goutfile string Output file for non interactive displays
-gdirectory string Output directory
"-outfile" associated qualifiers
-odirectory string Output directory
General qualifiers:
-auto boolean Turn off prompts
-stdout boolean Write first file to standard output
-filter boolean Read first file from standard input, write
first file to standard output
-options boolean Prompt for standard and additional values
-debug boolean Write debug output to program.dbg
-verbose boolean Report some/full command line options
-help boolean Report command line options. More
information on associated and general
qualifiers can be found with -help -verbose
-warning boolean Report warnings
-error boolean Report errors
-fatal boolean Report fatal errors
-die boolean Report dying program messages
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| Standard (Mandatory) qualifiers | Allowed values | Default | |
|---|---|---|---|
| [-sequence] (Parameter 1) |
Nucleotide sequence filename and optional format, or reference (input USA) | Readable sequence | Required |
| -cfile | Codon usage file | Codon usage file in EMBOSS data path | |
| -graph | Graph type | EMBOSS has a list of known devices, including ps, hpgl, hp7470, hp7580, meta, cps, x11, tekt, tek, none, data, xterm, png, gif | EMBOSS_GRAPHICS value, or x11 |
| -outfile | Output file name | Output file | <*>.syco |
| Additional (Optional) qualifiers | Allowed values | Default | |
| (none) | |||
| Advanced (Unprompted) qualifiers | Allowed values | Default | |
| -window | Averaging window | Any integer value | 30 |
| -uncommon | Show common codon usage | Boolean value Yes/No | No |
| -minimum | Minimum value for a common codon | Number from 0.000 to 0.990 | .15 |
| -[no]plot | Produce plot | Toggle value Yes/No | Yes |
ID X13776; SV 1; linear; genomic DNA; STD; PRO; 2167 BP.
XX
AC X13776; M43175;
XX
DT 19-APR-1989 (Rel. 19, Created)
DT 14-NOV-2006 (Rel. 89, Last updated, Version 24)
XX
DE Pseudomonas aeruginosa amiC and amiR gene for aliphatic amidase regulation
XX
KW aliphatic amidase regulator; amiC gene; amiR gene.
XX
OS Pseudomonas aeruginosa
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
XX
RN [1]
RP 1167-2167
RA Rice P.M.;
RT ;
RL Submitted (16-DEC-1988) to the EMBL/GenBank/DDBJ databases.
RL Rice P.M., EMBL, Postfach 10-2209, Meyerhofstrasse 1, 6900 Heidelberg, FRG.
XX
RN [2]
RP 1167-2167
RX DOI; 10.1016/0014-5793(89)80249-2.
RX PUBMED; 2495988.
RA Lowe N., Rice P.M., Drew R.E.;
RT "Nucleotide sequence of the aliphatic amidase regulator gene of Pseudomonas
RT aeruginosa";
RL FEBS Lett. 246(1-2):39-43(1989).
XX
RN [3]
RP 1-1292
RX PUBMED; 1907262.
RA Wilson S., Drew R.;
RT "Cloning and DNA seqence of amiC, a new gene regulating expression of the
RT Pseudomonas aeruginosa aliphatic amidase, and purification of the amiC
RT product.";
RL J. Bacteriol. 173(16):4914-4921(1991).
XX
RN [4]
RP 1-2167
RA Rice P.M.;
RT ;
RL Submitted (04-SEP-1991) to the EMBL/GenBank/DDBJ databases.
RL Rice P.M., EMBL, Postfach 10-2209, Meyerhofstrasse 1, 6900 Heidelberg, FRG.
XX
DR GOA; Q51417.
DR UniProtKB/Swiss-Prot; Q51417; AMIS_PSEAE.
XX
[Part of this file has been deleted for brevity]
FT /replace=""
FT /note="ClaI fragment deleted in pSW36, constitutive
FT phenotype"
FT misc_feature 1
FT /note="last base of an XhoI site"
FT misc_feature 648..653
FT /note="end of 658bp XhoI fragment, deletion in pSW3 causes
FT constitutive expression of amiE"
FT conflict 1281
FT /replace="g"
FT /citation=[3]
XX
SQ Sequence 2167 BP; 363 A; 712 C; 730 G; 362 T; 0 other;
ggtaccgctg gccgagcatc tgctcgatca ccaccagccg ggcgacggga actgcacgat 60
ctacctggcg agcctggagc acgagcgggt tcgcttcgta cggcgctgag cgacagtcac 120
aggagaggaa acggatggga tcgcaccagg agcggccgct gatcggcctg ctgttctccg 180
aaaccggcgt caccgccgat atcgagcgct cgcacgcgta tggcgcattg ctcgcggtcg 240
agcaactgaa ccgcgagggc ggcgtcggcg gtcgcccgat cgaaacgctg tcccaggacc 300
ccggcggcga cccggaccgc tatcggctgt gcgccgagga cttcattcgc aaccgggggg 360
tacggttcct cgtgggctgc tacatgtcgc acacgcgcaa ggcggtgatg ccggtggtcg 420
agcgcgccga cgcgctgctc tgctacccga ccccctacga gggcttcgag tattcgccga 480
acatcgtcta cggcggtccg gcgccgaacc agaacagtgc gccgctggcg gcgtacctga 540
ttcgccacta cggcgagcgg gtggtgttca tcggctcgga ctacatctat ccgcgggaaa 600
gcaaccatgt gatgcgccac ctgtatcgcc agcacggcgg cacggtgctc gaggaaatct 660
acattccgct gtatccctcc gacgacgact tgcagcgcgc cgtcgagcgc atctaccagg 720
cgcgcgccga cgtggtcttc tccaccgtgg tgggcaccgg caccgccgag ctgtatcgcg 780
ccatcgcccg tcgctacggc gacggcaggc ggccgccgat cgccagcctg accaccagcg 840
aggcggaggt ggcgaagatg gagagtgacg tggcagaggg gcaggtggtg gtcgcgcctt 900
acttctccag catcgatacg cccgccagcc gggccttcgt ccaggcctgc catggtttct 960
tcccggagaa cgcgaccatc accgcctggg ccgaggcggc ctactggcag accttgttgc 1020
tcggccgcgc cgcgcaggcc gcaggcaact ggcgggtgga agacgtgcag cggcacctgt 1080
acgacatcga catcgacgcg ccacaggggc cggtccgggt ggagcgccag aacaaccaca 1140
gccgcctgtc ttcgcgcatc gcggaaatcg atgcgcgcgg cgtgttccag gtccgctggc 1200
agtcgcccga accgattcgc cccgaccctt atgtcgtcgt gcataacctc gacgactggt 1260
ccgccagcat gggcggggga ccgctcccat gagcgccaac tcgctgctcg gcagcctgcg 1320
cgagttgcag gtgctggtcc tcaacccgcc gggggaggtc agcgacgccc tggtcttgca 1380
gctgatccgc atcggttgtt cggtgcgcca gtgctggccg ccgccggaag ccttcgacgt 1440
gccggtggac gtggtcttca ccagcatttt ccagaatggc caccacgacg agatcgctgc 1500
gctgctcgcc gccgggactc cgcgcactac cctggtggcg ctggtggagt acgaaagccc 1560
cgcggtgctc tcgcagatca tcgagctgga gtgccacggc gtgatcaccc agccgctcga 1620
tgcccaccgg gtgctgcctg tgctggtatc ggcgcggcgc atcagcgagg aaatggcgaa 1680
gctgaagcag aagaccgagc agctccagga ccgcatcgcc ggccaggccc ggatcaacca 1740
ggccaaggtg ttgctgatgc agcgccatgg ctgggacgag cgcgaggcgc accagcacct 1800
gtcgcgggaa gcgatgaagc ggcgcgagcc gatcctgaag atcgctcagg agttgctggg 1860
aaacgagccg tccgcctgag cgatccgggc cgaccagaac aataacaaga ggggtatcgt 1920
catcatgctg ggactggttc tgctgtacgt tggcgcggtg ctgtttctca atgccgtctg 1980
gttgctgggc aagatcagcg gtcgggaggt ggcggtgatc aacttcctgg tcggcgtgct 2040
gagcgcctgc gtcgcgttct acctgatctt ttccgcagca gccgggcagg gctcgctgaa 2100
ggccggagcg ctgaccctgc tattcgcttt tacctatctg tgggtggccg ccaaccagtt 2160
cctcgag 2167
//
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EMBOSS data files are distributed with the application and stored in the standard EMBOSS data directory, which is defined by the EMBOSS environment variable EMBOSS_DATA.
To see the available EMBOSS data files, run:
% embossdata -showall
To fetch one of the data files (for example 'Exxx.dat') into your current directory for you to inspect or modify, run:
% embossdata -fetch -file Exxx.dat
Users can provide their own data files in their own directories. Project specific files can be put in the current directory, or for tidier directory listings in a subdirectory called ".embossdata". Files for all EMBOSS runs can be put in the user's home directory, or again in a subdirectory called ".embossdata".
The directories are searched in the following order:
The default codon usage table file is the human Ehum.cut - caution: this may well not be the correct species.
| Program name | Description |
|---|---|
| cai | Calculate codon adaptation index |
| chips | Calculates Nc codon usage statistic |
| codcmp | Codon usage table comparison |
| cusp | Create a codon usage table from nucleotide sequence(s) |
| getorf | Finds and extracts open reading frames (ORFs) |
| marscan | Finds matrix/scaffold recognition (MRS) signatures in DNA sequences |
| plotorf | Plot potential open reading frames in a nucleotide sequence |
| showorf | Display a nucleotide sequence and translation in pretty format |
| sixpack | Display a DNA sequence with 6-frame translation and ORFs |
| tcode | Identify protein-coding regions using Fickett TESTCODE statistic |
| wobble | Plot third base position variability in a nucleotide sequence |