5c5d is a 4 chain structure with sequence from Trede. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
[Q73PV9_TREDE] Catalyzes the conversion of N5-carboxyaminoimidazole ribonucleotide (N5-CAIR) to 4-carboxy-5-aminoimidazole ribonucleotide (CAIR).[HAMAP-Rule:MF_01929][PIRNR:PIRNR001338]