Information on EC - choline monooxygenase

for references in articles please use BRENDA:EC1.14.15.7
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EC Tree
IUBMB Comments
The spinach enzyme, which is located in the chloroplast, contains a Rieske-type [2Fe-2S] cluster, and probably also a mononuclear Fe centre. Requires Mg2+. Catalyses the first step of glycine betaine synthesis. In many bacteria, plants and animals, betaine is synthesized in two steps: (1) choline to betaine aldehyde and (2) betaine aldehyde to betaine. Different enzymes are involved in the first reaction. In plants, the reaction is catalysed by this enzyme whereas in animals and many bacteria it is catalysed by either membrane-bound EC (choline dehydrogenase) or soluble EC (choline oxidase) . The enzyme involved in the second step, EC (betaine-aldehyde dehydrogenase), appears to be the same in plants, animals and bacteria. In some bacteria, betaine is synthesized from glycine through the actions of EC (glycine/sarcosine N-methyltransferase) and EC (sarcosine/dimethylglycine N-methyltransferase).
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The expected taxonomic range for this enzyme is: Eukaryota, Bacteria, Archaea
choline monooxygenase, ahcmo, apcmo, more
choline + O2 + reduced ferredoxin + 2 H+ = betaine aldehyde hydrate + H2O + oxidized ferredoxin
show the reaction diagram
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