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Division of Computer Research and Technology at NIH. Among other
software, the helix systems maintain and support the
GCG package and several
large nucleotide and
protein databases. See the helix web page for information about
getting a helix account.
What is GCG-Lite?
GCG-Lite is
a World Wide Web interface to the more popular utilities within the Genetics Computer Group
(GCG) suite of sequence analysis programs. It currently includes
- Sequence locator/lookup
- DNA Analysis tools
such as Map, Mapsort, Prime, Reverse, Translate.
- Protein
Analysis Tools such as Motifs, Isoelectric, Helicalwheel, MapPeptide,
PepPlot, PlotStructure, BackTranslate.
- Sequence
Comparison Tools such as Gap, Bestfit, DotPlot/Compare.
There is online help for all these tools.
How do I edit my files on helix?
There are several editors available on the helix system, and which
one you find convenient depends on your level of familiarity with
Unix, your workstation/communications setup, and your needs.
- Pico is a simple fullscreen text editor that works with
most workstation/communications setups. To edit your file, type
'pico filename'. For more info on pico, type 'man pico' at the
helix prompt. Pico is recommended for new users.
- Vi is a text editor that is based on a line editor,
and will probably work on any Unix system. The commands are not
as simple as pico, however. To edit a file, type 'vi filename'.
For more info type 'man vi' at the helix prompt.
- Jot is a mouse-based text editor which has cut-and-
paste, pull-down menus. It will work only on a workstation running
xwindows software, and is tuned for SGI machines. To edit the
file, type 'jot filename', and for more info 'man jot'.
- Emacs