Guide to GO Evidence Codes

A GO annotation consists of a GO term associated with a specific reference that describes the work or analysis upon which the association between a specific GO term and gene product is based. Each annotation must also include an evidence code to indicate how the annotation to a particular term is supported. 

This document is a guide to the standard usage of the GO evidence codes. Annotators may also find the evidence code decision tree useful in selecting the correct evidence code for an annotation.