This (temporary image) shows the two reactions found in Drosophila from Reactome's Histidine catabolism pathway.

The plan is that this will be part of the Pathway Explorer pages and will consist of interactive pathways including the addition of gene and metabolite levels


Take me back to Histidine Catabolism

The full gap-filled version from Homo Sapians can be found here

These diagrams are from MetaCyc (HDC and CARNMT1) and can (most likely) be reproduced with PathwayTools and a Cobra model