# OC Root 2nd 3rd 4th PC Gene/Definition OC.564634 Bacteria.414722 Proteobacteria.449883 Alphaproteobacteria.299960 aex.739 aex:Astex_0686 transcriptional coactivator/pterin dehydratase; K01724 4a-hydroxytetrahydrobiopterin dehydratase [EC:4.2.1.96]