Update History


Introduction to BioCyc
13075 Databases
Guided Tour
Pathway Tools Software
Pathway Tools Blog
Linking to BioCyc
Contact Us


Subscribe to BioCyc
Metabolic Posters
Genome Posters
Software/Database Downloads
Web Services

Contact Us


For licensing of Pathway Tools and BioCyc by academic and government users, click here.

For licensing of Pathway Tools and BioCyc by commercial users,

User Support

To report problems with this website or one of its databases, or to request assistance, send email to

To report problems in a particular data page on this site, click the button "Report Errors or Provide Feedback" at the bottom of the page. The resulting error report will tell us on exactly what page you encountered an error.

We can help with:

  • Problems connecting to the website
  • Requests for a new feature in the website
  • Requests for assistance in performing some task
  • Reporting omissions, redundancies, ambiguities, or errors in a database
  • Reporting errors in software, documentation, or the website

To report problems with a locally installed copy of the Pathway Tools software, send email to .