
                                   syco 



Function

   Synonymous codon usage Gribskov statistic plot

Description

   syco 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.

   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.

Usage

   Here is a sample session with syco


% syco -plot -cfile Epseae.cut 
Synonymous codon usage Gribskov statistic plot
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

Command line arguments

   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 standard output
   -filter             boolean    Read standard input, write 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

Input file format

   syco reads a nucleic acid sequence USA.

  Input files for usage example

   'tembl:x13776' is a sequence entry in the example nucleic acid
   database 'tembl'

  Database entry: tembl:x13776

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 Pseudomona
s
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 cause
s
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        6
0
     ctacctggcg agcctggagc acgagcgggt tcgcttcgta cggcgctgag cgacagtcac       12
0
     aggagaggaa acggatggga tcgcaccagg agcggccgct gatcggcctg ctgttctccg       18
0
     aaaccggcgt caccgccgat atcgagcgct cgcacgcgta tggcgcattg ctcgcggtcg       24
0
     agcaactgaa ccgcgagggc ggcgtcggcg gtcgcccgat cgaaacgctg tcccaggacc       30
0
     ccggcggcga cccggaccgc tatcggctgt gcgccgagga cttcattcgc aaccgggggg       36
0
     tacggttcct cgtgggctgc tacatgtcgc acacgcgcaa ggcggtgatg ccggtggtcg       42
0
     agcgcgccga cgcgctgctc tgctacccga ccccctacga gggcttcgag tattcgccga       48
0
     acatcgtcta cggcggtccg gcgccgaacc agaacagtgc gccgctggcg gcgtacctga       54
0
     ttcgccacta cggcgagcgg gtggtgttca tcggctcgga ctacatctat ccgcgggaaa       60
0
     gcaaccatgt gatgcgccac ctgtatcgcc agcacggcgg cacggtgctc gaggaaatct       66
0
     acattccgct gtatccctcc gacgacgact tgcagcgcgc cgtcgagcgc atctaccagg       72
0
     cgcgcgccga cgtggtcttc tccaccgtgg tgggcaccgg caccgccgag ctgtatcgcg       78
0
     ccatcgcccg tcgctacggc gacggcaggc ggccgccgat cgccagcctg accaccagcg       84
0
     aggcggaggt ggcgaagatg gagagtgacg tggcagaggg gcaggtggtg gtcgcgcctt       90
0
     acttctccag catcgatacg cccgccagcc gggccttcgt ccaggcctgc catggtttct       96
0
     tcccggagaa cgcgaccatc accgcctggg ccgaggcggc ctactggcag accttgttgc      102
0
     tcggccgcgc cgcgcaggcc gcaggcaact ggcgggtgga agacgtgcag cggcacctgt      108
0
     acgacatcga catcgacgcg ccacaggggc cggtccgggt ggagcgccag aacaaccaca      114
0
     gccgcctgtc ttcgcgcatc gcggaaatcg atgcgcgcgg cgtgttccag gtccgctggc      120
0
     agtcgcccga accgattcgc cccgaccctt atgtcgtcgt gcataacctc gacgactggt      126
0
     ccgccagcat gggcggggga ccgctcccat gagcgccaac tcgctgctcg gcagcctgcg      132
0
     cgagttgcag gtgctggtcc tcaacccgcc gggggaggtc agcgacgccc tggtcttgca      138
0
     gctgatccgc atcggttgtt cggtgcgcca gtgctggccg ccgccggaag ccttcgacgt      144
0
     gccggtggac gtggtcttca ccagcatttt ccagaatggc caccacgacg agatcgctgc      150
0
     gctgctcgcc gccgggactc cgcgcactac cctggtggcg ctggtggagt acgaaagccc      156
0
     cgcggtgctc tcgcagatca tcgagctgga gtgccacggc gtgatcaccc agccgctcga      162
0
     tgcccaccgg gtgctgcctg tgctggtatc ggcgcggcgc atcagcgagg aaatggcgaa      168
0
     gctgaagcag aagaccgagc agctccagga ccgcatcgcc ggccaggccc ggatcaacca      174
0
     ggccaaggtg ttgctgatgc agcgccatgg ctgggacgag cgcgaggcgc accagcacct      180
0
     gtcgcgggaa gcgatgaagc ggcgcgagcc gatcctgaag atcgctcagg agttgctggg      186
0
     aaacgagccg tccgcctgag cgatccgggc cgaccagaac aataacaaga ggggtatcgt      192
0
     catcatgctg ggactggttc tgctgtacgt tggcgcggtg ctgtttctca atgccgtctg      198
0
     gttgctgggc aagatcagcg gtcgggaggt ggcggtgatc aacttcctgg tcggcgtgct      204
0
     gagcgcctgc gtcgcgttct acctgatctt ttccgcagca gccgggcagg gctcgctgaa      210
0
     ggccggagcg ctgaccctgc tattcgcttt tacctatctg tgggtggccg ccaaccagtt      216
0
     cctcgag                                                                216
7
//

Output file format

  Output files for usage example

  Graphics File: syco.ps

   [syco results]

Data files

   Codon usage table files are read in.

   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:
     * . (your current directory)
     * .embossdata (under your current directory)
     * ~/ (your home directory)
     * ~/.embossdata

Notes

   None.

References

   None.

Warnings

   The default codon usage table file is the human Ehum.cut - caution:
   this may well not be the correct species.

Diagnostic Error Messages

   None.

Exit status

   It always exits with status 0.

Known bugs

   None.

See also

   Program name                        Description
   cai          CAI codon adaptation index
   chips        Codon usage statistics
   codcmp       Codon usage table comparison
   cusp         Create a codon usage table
   getorf       Finds and extracts open reading frames (ORFs)
   marscan      Finds MAR/SAR sites in nucleic sequences
   plotorf      Plot potential open reading frames
   showorf      Pretty output of DNA translations
   sixpack      Display a DNA sequence with 6-frame translation and ORFs
   tcode        Fickett TESTCODE statistic to identify protein-coding DNA
   wobble       Wobble base plot

   wobble does the analysis of the third base.

Author(s)

   Alan Bleasby (ajb © ebi.ac.uk)
   European Bioinformatics Institute, Wellcome Trust Genome Campus,
   Hinxton, Cambridge CB10 1SD, UK

History

Target users

   This program is intended to be used by everyone and everything, from
   naive users to embedded scripts.

Comments

   None
