GO terms from a source species are projected onto one or more target species based on gene orthology obtained from the Ensembl Compara system. Only one to one and apparent one to one orthologies are used, and only GO annotations with an evidence type of IDA, IEP, IGI, IMP or IPI are projected. Projected GO annotations using this technique will receive the evidence code, inferred from electronic anotation, 'IEA'. The UniProtKB protein accession of the annotation source will be indicated in the 'With' column of the GOA association file.