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If you use this service, could you please send us a mail to npsang@ibcp.fr with details about your usage of the NPSA service (tools used, frequency, type of sequence, ..) ? Could you explain what makes this service unique for you ? Could you please add information about your country and your laboratory ? Thanks

A brief introduction to GOR IV
GOR IV is the fourth version of GOR secondary structure prediction methods based on the information theory. There is no defined decision constant. GOR IV uses all possible pair frequencies within the window of 17 amino acid residues.

Availability in NPS@
This method is available :

• At URL : https://npsa-prabi.ibcp.fr/NPSA/npsa_gor4.html.
• In secondary consensus prediction at URL : https://npsa-prabi.ibcp.fr/NPSA/npsa_seccons.html.
• In protein sequences multiple alignement at URLs :
  • CLUSTALW : https://npsa-prabi.ibcp.fr/NPSA/npsa_clustalw.html
  • MULTALIN : https://npsa-prabi.ibcp.fr/NPSA/npsa_multalin.html
• when you work with a sequence in NPS@ if you make a consensus secondary prediction on it.

Parameters
No parameter required.

NPS@ GOR4 output example
You can see:

• MPSA/ANTHEPROT link to view the prediction in these local protein sequence analysis softwares.
• The color coded prediction (a sequence line and below the corresponding predicted states).
• The sequence length.
• The percentage of each secondary element.
• Two graphics. The first to better visualize the prediction. In the second, there are the score curves for each predicted state.
• The paramaters used.
• Link on the prediction result text file.

References