It is now the 3rd CHALLENGE Period for CACAO Fall 2017! It will end on Sunday October 22, 2017 at 11:59 pm CDT
This is your chance to challenge other team's annotations. You may also DEFEND or suggest improvements to your own annotations IF they have been challenged. Please note, although we ENCOURAGE challenges, an excess of identical challenges that do not appear to be applicable to the annotation or well thought out will be considered spam and ignored.

Have any questions? Please email us at

Category:Phage Hunters Spring 2017

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the intercollegiate annotation competition!
The Community Assessment of Community Annotation with Ontologies (CACAO) is a competition for teams of undergrads around the world to improve the functional annotation of genes. CACAO was developed and is currently run at Texas A&M University, along with many other institutions. If you are interested in participating, please email us -


Calendar of Rounds

Inning Activity Start End Notes



  • 2017-01-30
  • 06:00 PM
  • 2017-04-02
  • 05:59 PM

Instruction inning



  • 2017-04-02
  • 06:00 PM
  • 2017-04-09
  • 11:59 PM

First annotation inning



  • 2017-04-10
  • 01:00 AM
  • 2017-04-16
  • 11:59 PM

Annotation/challenge inning



  • 2017-04-17
  • 01:00 AM
  • 2017-04-23
  • 11:59 PM

Last annotation inning



  • 2017-04-24
  • 01:00 AM
  • 2017-06-02
  • 11:59 PM

Last chance to annotate/challenge!

Phage Hunters Spring 2017

Quick Links

  • Don't forget - no binding terms (i.e. DNA binding, etc) & no response to terms (i.e. response to heat, etc)
  • For more help on evidence codes
Look through the helpful handouts for students, this includes printable documents

Participating schools

  • University of Maryland, Baltimore County
  • Virginia Commonwealth University
  • Drexel University
  • Ekiti-State University
  • James Madison University

Lecture slides

Background info is at the About CACAO page. Links to new material will be posted here.

The below material is for regular CACAO, NOT the Phage Hunters. It may still be useful for students for background info.

Virus-related GO terms

  • For those of you interested in annotating proteins from viruses and phages:
  1. Serrano-Heras, G et al. (2007) Protein p56 from the Bacillus subtilis phage phi29 inhibits DNA-binding ability of uracil-DNA glycosylase. Nucleic Acids Res. 35 5393-401 PubMed GONUTS page


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