A purine-histidine relationship in Escherichia coli.
D004926:Escherichia coli / Q000378:metabolism*; D006639:Histidine; D053858:Metabolic Networks and Pathways; D011687:Purines / Q000378:metabolism*
D011687:Purines; D006639:Histidine; C030985:purine
ESCHERICHIA COLI/metabolism; PURINES/metabolism