pepwheel(1) Draw a helical wheel diagram for a protein sequence


pepwheel -sequence sequence -wheel boolean [-steps integer] [-turns integer] -graph graph -amphipathic toggle -squares string -diamonds string -octags string
pepwheel -help



is a command line program from EMBOSS ("the European Molecular Biology Open Software Suite"). It is part of the "Display,Protein:2D Structure" command group(s).


Input section

-sequence sequence

Output section

-wheel boolean

Default value: Y

-steps integer

The number of residues plotted per turn is this value divided by the 'turns' value. Default value: 18

-turns integer

The number of residues plotted per turn is the 'steps' value divided by this value. Default value: 5

-graph graph

Markup section

-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'.

-squares string

By default the aliphatic residues ILVM are marked with squares. Default value: ILVM

-diamonds string

By default the residues DENQST are marked with diamonds. Default value: DENQST

-octags string

By default the positively charged residues HKR are marked with octagons. Default value: HKR


Bugs can be reported to the Debian Bug Tracking system (, or directly to the EMBOSS developers (


Debian Med Packaging Team <[email protected]>

Wrote the script used to autogenerate this manual page.


This manual page was autogenerated from an Ajax Control Definition of the EMBOSS package. It can be redistributed under the same terms as EMBOSS itself.