ureides
Ureides are a class of nitrogen-rich organic compounds derived from the degradation of purines that contain the ureide motif. The best-known ureides in plants are allantoin and allantoate, with uric acid acting as an upstream precursor in many species. Ureides are particularly important in certain plants as forms of organic nitrogen that can be transported over long distances.
Biochemical pathways and transport: In many plants, purine catabolism proceeds from uric acid to allantoin via
Physiological role and significance: The ureide pathway provides an efficient mechanism for long-distance transport of organic
Distribution and context: Ureide metabolism is well characterized in leguminous crops such as soybeans and common