A glimpse of this procedure can be seen through the read-only versions of KOALA and GFIT tools available on the KO and GENES entry pages, respectively. The quality of KEGG ortholog annotation can be examined by two additional tools. The ortholog table tool displays the status of KO assignment for a given set of K numbers, which is useful to check the completeness of a pathway or a complex. The gene cluster tool displays the status of KO assignment along the chromosomal position of a given genome, which is useful to check the consistency of annotation for operon-like structures in bacterial genomes.
