Description

This track displays the operon predictions done at The Institute for Genomic Research (TIGR). The method of prediction is described at this URL:

http://www.tigr.org/tigr-scripts/operons/operons.cgi

Basically, it's an approach that tries to find "conserved gene pairs", i.e. the gene sequence is conserved, and near the other gene on the same strand in more than one genome. This might not be the best method for archaeal genomes so many of the ORFs are annotated as hypothetical. In Pyrobaculum aerophilum for example, out of 2605 total genes, only 501 are predicted to be a part of one of the 174 operons.

References