Contact Us

Licensing and Subscriptions

For subscriptions to the BioCyc website: click here.

For licensing of the locally installable Pathway Tools software and BioCyc data files:

  • By academic and government users: click here.
  • By commercial users:

User Support

For problems accessing the BioCyc site, see our troubleshooting guide.

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. can also 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 .