3of5 is a 2 chain structure with sequence from Fratt. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[BIOD_FRATT] Catalyzes a mechanistically unusual reaction, the ATP-dependent insertion of CO2 between the N7 and N8 nitrogen atoms of 7,8-diaminopelargonic acid (DAPA) to form an ureido ring.[HAMAP-Rule:MF_00336]