Biological formation of ethylene.

ABSTRACT: This review summarizes the structures, biochemical properties, and mechanisms of two major biological sources of ethylene, the ethylene-forming enzyme (EFE) and 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase (ACCO). EFE is found in selected bacteria and fungi where it catalyzes two reactions: (1) the oxygen-dependent conversion of 2-oxoglutarate (2OG) to ethylene plus three molecules of CO₂/bicarbonate and (2) the oxidative decarboxylation of 2OG while transforming l-arginine to guanidine and l-Δ¹-pyrroline-5-carboxylic acid. ACCO is present in plants where it makes the plant hormone by transforming ACC, O₂, and an external reductant to ethylene, HCN, CO₂, and water. Despite catalyzing distinct chemical reactions, EFE and ACCO are related in

SUBMITTER: Hausinger RP 

PROVIDER: S-EPMC10467617 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature