
                                  pepnet 



Function

   Displays proteins as a helical net

Description

   This is a method of displaying the residues of a protein in a simple
   3,4,3,4 repeating pattern that emulates at a simple level the
   arrangement of residues around an alpha helix.

   It is therefore easy to see patterns of amphipathicity that you may
   wish to investigate in more detail by using displays such as pepwheel.

   You can specify which residues to mark up in squares, diamonds and
   octagons.

Usage

   Here is a sample session with pepnet


% pepnet -sask 
Displays proteins as a helical net
Input sequence: tsw:gcn4_yeast
     Begin at position [start]: 253
       End at position [end]: 274
Graph type [x11]: cps

Created pepnet.ps

   Go to the input files for this example
   Go to the output files for this example

Command line arguments

   Standard (Mandatory) qualifiers:
  [-sequence]          sequence   Sequence USA
   -graph              graph      Graph type

   Additional (Optional) qualifiers (* if not always prompted):
*  -squares            string     By default the aliphatic residues ILVM are
                                  marked with squares.
*  -diamonds           string     By default the residues DENQST are marked
                                  with diamonds.
*  -octags             string     By default the positively charged residues
                                  HKR are marked with octagons.

   Advanced (Unprompted) qualifiers:
   -amphipathic        toggle     If this is true then the residues ACFGILMVWY
                                  are marked as squares and all other
                                  residues are unmarked. This overrides any
                                  other markup that you may have specified
                                  using the qualifiers '-squares', '-diamonds'
                                  and '-octags'.

   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

   "-graph" associated qualifiers
   -gprompt             boolean    Graph prompting
   -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

   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 deaths


   Standard (Mandatory) qualifiers Allowed values Default
   [-sequence]
   (Parameter 1) Sequence USA Readable sequence Required
   -graph Graph type EMBOSS has a list of known devices, including
   postscript, ps, hpgl, hp7470, hp7580, meta, colourps, cps, xwindows,
   x11, tektronics, tekt, tek4107t, tek, none, null, text, data, xterm,
   png, xml EMBOSS_GRAPHICS value, or x11
   Additional (Optional) qualifiers Allowed values Default
   -squares By default the aliphatic residues ILVM are marked with
   squares. Any string is accepted ILVM
   -diamonds By default the residues DENQST are marked with diamonds. Any
   string is accepted DENQST
   -octags By default the positively charged residues HKR are marked with
   octagons. Any string is accepted HKR
   Advanced (Unprompted) qualifiers Allowed values Default
   -amphipathic If this is true then the residues ACFGILMVWY are marked
   as squares and all other residues are unmarked. This overrides any
   other markup that you may have specified using the qualifiers
   '-squares', '-diamonds' and '-octags'. Toggle value Yes/No No

Input file format

   pepnet reads any protein sequence USA.

  Input files for usage example

   'tsw:gcn4_yeast' is a sequence entry in the example protein database
   'tsw'

  Database entry: tsw:gcn4_yeast

ID   GCN4_YEAST     STANDARD;      PRT;   281 AA.
AC   P03069; P03068;
DT   21-JUL-1986 (Rel. 01, Created)
DT   21-JUL-1986 (Rel. 01, Last sequence update)
DT   15-JUL-1999 (Rel. 38, Last annotation update)
DE   GENERAL CONTROL PROTEIN GCN4 (AMINO ACID BIOSYNTHESIS REGULATORY
DE   PROTEIN).
GN   GCN4 OR ARG9 OR AAS3 OR YEL009C.
OS   Saccharomyces cerevisiae (Baker's yeast).
OC   Eukaryota; Fungi; Ascomycota; Hemiascomycetes; Saccharomycetales;
OC   Saccharomycetaceae; Saccharomyces.
RN   [1]
RP   SEQUENCE FROM N.A.
RX   MEDLINE; 85038531.
RA   HINNEBUSCH A.G.;
RT   "Evidence for translational regulation of the activator of general
RT   amino acid control in yeast.";
RL   Proc. Natl. Acad. Sci. U.S.A. 81:6442-6446(1984).
RN   [2]
RP   SEQUENCE FROM N.A.
RX   MEDLINE; 84298088.
RA   THIREOS G., PENN M.D., GREER H.;
RT   "5' untranslated sequences are required for the translational control
RT   of a yeast regulatory gene.";
RL   Proc. Natl. Acad. Sci. U.S.A. 81:5096-5100(1984).
RN   [3]
RP   SEQUENCE FROM N.A.
RC   STRAIN=S288C / AB972;
RA   DIETRICH F.S., MULLIGAN J.T., HENNESSEY K.M., ALLEN E., ARAUJO R.,
RA   AVILES E., BERNO A., BRENNAN T., CARPENTER J., CHEN E., CHERRY J.M.,
RA   CHUNG E., DUNCAN M., GUZMAN E., HARTZELL G., HUNICKE-SMITH S.,
RA   HYMAN R., KAYSER A., KOMP C., LASHKARI D., LEW H., LIN D.,
RA   MOSEDALE D., NAKAHARA K., NAMATH A., NORGREN R., OEFNER P., OH C.,
RA   PETEL F.X., ROBERTS D., SEHL P., SCHRAMM S., SHOGREN T., SMITH V.,
RA   TAYLOR P., WEI Y., YELTON M., BOTSTEIN D., DAVIS R.W.;
RL   Submitted (DEC-1994) to the EMBL/GenBank/DDBJ databases.
RN   [4]
RP   DOMAINS.
RX   MEDLINE; 87002456.
RA   HOPE I.A., STRUHL K.;
RT   "Functional dissection of a eukaryotic transcriptional activator
RT   protein, GCN4 of yeast.";
RL   Cell 46:885-894(1986).
RN   [5]
RP   X-RAY CRYSTALLOGRAPHY (1.8 ANGSTROMS) OF 250-281.
RX   MEDLINE; 92054531.
RA   O'SHEA E.K., KLEMM J.D., KIM P.S., ALBER T.;
RT   "X-ray structure of the GCN4 leucine zipper, a two-stranded, parallel
RT   coiled coil.";
RL   Science 254:539-544(1991).


  [Part of this file has been deleted for brevity]

CC   -!- SUBCELLULAR LOCATION: NUCLEAR.
CC   -!- SIMILARITY: TO OTHER BZIP PROTEINS.
CC   --------------------------------------------------------------------------
CC   This SWISS-PROT entry is copyright. It is produced through a collaboration
CC   between  the Swiss Institute of Bioinformatics  and the  EMBL outstation -
CC   the European Bioinformatics Institute.  There are no  restrictions on  its
CC   use  by  non-profit  institutions as long  as its content  is  in  no  way
CC   modified and this statement is not removed.  Usage  by  and for commercial
CC   entities requires a license agreement (See http://www.isb-sib.ch/announce/
CC   or send an email to license@isb-sib.ch).
CC   --------------------------------------------------------------------------
DR   EMBL; K02205; AAA34640.1; -.
DR   EMBL; K02649; AAA65521.1; -.
DR   EMBL; U18530; AAB64486.1; -.
DR   PIR; A03604; RGBYA1.
DR   PIR; A03605; RGBYA2.
DR   PDB; 1ZTA; 15-APR-93.
DR   PDB; 2ZTA; 15-OCT-92.
DR   PDB; 1YSA; 31-OCT-93.
DR   PDB; 1DGC; 22-JUN-94.
DR   PDB; 2DGC; 08-MAR-96.
DR   PDB; 1GCL; 03-JUN-95.
DR   PDB; 1GCM; 29-JAN-96.
DR   PDB; 1SWI; 08-NOV-96.
DR   PDB; 1ZII; 07-JUL-97.
DR   PDB; 1ZIJ; 07-JUL-97.
DR   PDB; 1ZIK; 07-JUL-97.
DR   PDB; 1ZIL; 07-JUL-97.
DR   PDB; 1ZIM; 07-JUL-97.
DR   PDB; 1PIQ; 30-SEP-98.
DR   PDB; 1CE9; 25-MAR-99.
DR   TRANSFAC; T00321; -.
DR   SGD; L0000683; GCN4.
DR   PFAM; PF00170; bZIP; 1.
DR   PROSITE; PS00036; BZIP_BASIC; 1.
KW   Amino-acid biosynthesis; Transcription regulation; Activator;
KW   DNA-binding; Nuclear protein; 3D-structure.
FT   DOMAIN      106    125       REQUIRED FOR TRANSCRIPTIONAL ACTIVATION.
FT   DNA_BIND    231    249       BASIC MOTIF.
FT   DOMAIN      253    274       LEUCINE-ZIPPER.
FT   CONFLICT    239    281       ARRSRARKLQRMKQLEDKVEELLSKNYHLENEVARLKKLVG
FT                                ER -> PGVLVRESCKE (IN REF. 2).
FT   HELIX       227    276
FT   TURN        277    277
SQ   SEQUENCE   281 AA;  31310 MW;  A2155238 CRC32;
     MSEYQPSLFA LNPMGFSPLD GSKSTNENVS ASTSTAKPMV GQLIFDKFIK TEEDPIIKQD
     TPSNLDFDFA LPQTATAPDA KTVLPIPELD DAVVESFFSS STDSTPMFEY ENLEDNSKEW
     TSLFDNDIPV TTDDVSLADK AIESTEEVSL VPSNLEVSTT SFLPTPVLED AKLTQTRKVK
     KPNSVVKKSH HVGKDDESRL DHLGVVAYNR KQRSIPLSPI VPESSDPAAL KRARNTEAAR
     RSRARKLQRM KQLEDKVEEL LSKNYHLENE VARLKKLVGE R
//

Output file format

  Output files for usage example

  Graphics File: pepnet.ps

   [pepnet results]

Data files

   None.

Notes

   None.

References

   None.

Warnings

   None.

Diagnostic Error Messages

   None.

Exit status

   It exits with a status of 0.

Known bugs

   None.

See also

    Program name                         Description
   abiview        Reads ABI file and display the trace
   cirdna         Draws circular maps of DNA constructs
   garnier        Predicts protein secondary structure
   helixturnhelix Report nucleic acid binding motifs
   hmoment        Hydrophobic moment calculation
   lindna         Draws linear maps of DNA constructs
   pepcoil        Predicts coiled coil regions
   pepwheel       Shows protein sequences as helices
   prettyplot     Displays aligned sequences, with colouring and boxing
   prettyseq      Output sequence with translated ranges
   remap          Display sequence with restriction sites, translation etc
   seealso        Finds programs sharing group names
   showalign      Displays a multiple sequence alignment
   showdb         Displays information on the currently available databases
   showfeat       Show features of a sequence
   showseq        Display a sequence with features, translation etc
   sixpack        Display a DNA sequence with 6-frame translation and ORFs
   textsearch     Search sequence documentation. Slow, use SRS and Entrez!
   tmap           Displays membrane spanning regions

Author(s)

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

History

   Written (2000) - Alan Bleasby

Target users

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

Comments

   None
