1.5.3.24: sarcosine oxidase (5,10-methylenetetrahydrofolate-forming)
This is an abbreviated version!
For detailed information about sarcosine oxidase (5,10-methylenetetrahydrofolate-forming), go to the full flat file.
Reaction
Synonyms
heterotetrameric sarcosine oxidase, HSO, sarcosine oxidase, sarcosine oxidase P, sarcosine: oxygen oxidoreductase (demethylating), sarcosine:oxygen oxidoreductase (demethylating), TSOX
ECTree
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Substrates Products
Substrates Products on EC 1.5.3.24 - sarcosine oxidase (5,10-methylenetetrahydrofolate-forming)
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REACTION DIAGRAM
L-proline + O2
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poor substrate, the reduction of the enzyme with L-proline at pH 8.0 is not significant under aerobic conditions
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sarcosine + 5,6,7,8-tetrahydrofolate + 2,6-dichlorophenolindophenol
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sarcosine + 5,6,7,8-tetrahydrofolate + phenazine methosulfate
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sarcosine + 5,6,7,8-tetrahydrofolate + O2
glycine + 5,10-methylenetetrahydrofolate + H2O2
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sarcosine + 5,6,7,8-tetrahydrofolate + O2
glycine + 5,10-methylenetetrahydrofolate + H2O2
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sarcosine + 5,6,7,8-tetrahydrofolate + O2
glycine + 5,10-methylenetetrahydrofolate + H2O2
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sarcosine + 5,6,7,8-tetrahydrofolate + O2
glycine + 5,10-methylenetetrahydrofolate + H2O2
Q3ZDQ8; Q3ZDR0; Q3ZDQ7; Q3ZDQ9
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sarcosine + 5,6,7,8-tetrahydrofolate + O2
glycine + 5,10-methylenetetrahydrofolate + H2O2
Stenotrophomonas maltophilia DSM 2701
Q3ZDQ8; Q3ZDR0; Q3ZDQ7; Q3ZDQ9
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additional information
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no activity with NAD+ or NADP+ as electron acceptor in the presence or absence of various thiols (glutathione, coenzyme A, dithioerythritol)
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additional information
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oxygen cannot be replaced by methylene blue or cytochrome c. The enzyme shows no activity with N,N-dimethylglycine, glycine, betaine, choline, 1,3-dimethylurea, 1-methylguanidine, 1-methylhydantoin, sarcosyl-glycine, and sarcosyl-sarcosine
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additional information
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the reduction of the oxidized enzyme with dithiothreitol or its reoxidation with air shows slow kinetics. Moreover, the oxidized enzyme in an about 40% reduced state with dithiothreitol contains a flavin semiquinone comprising approximately 35% of the total flavin
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