Term Name:	4-hydroxy-3-methylbut-2-enyl-diphosphate synthase activity (flavodoxin)
Synonyms:	4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase activity
Definition:	Catalysis of the reaction: (2E)-4-hydroxy-3-methylbut-2-enyl diphosphate + 2 H+ + H2O + oxidized [flavodoxin] = 2-C-methyl-D-erythritol 2,4-cyclic diphosphate + reduced [flavodoxin].
Ontology:	GO: Molecular Function [GO:0141197]    QuickGO    AmiGO