3.1.1.49: sinapine esterase
This is an abbreviated version!
For detailed information about sinapine esterase, go to the full flat file.
Word Map on EC 3.1.1.49
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3.1.1.49
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seedlings
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brassica
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napus
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lipases
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brassicaceae
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antinutritive
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sinapate
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sinapoylmalate
- 3.1.1.49
- seedlings
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brassica
- napus
- lipases
- brassicaceae
-
antinutritive
- sinapate
- sinapoylmalate
Reaction
Synonyms
aromatic choline esterase, BnLIP2, BnSCE3, BnSCE3/BnLIP2, esterase, sinapine, SCE, sinapine esterase, sinapoylcholine(sinapine) esterase
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Substrates Products
Substrates Products on EC 3.1.1.49 - sinapine esterase
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REACTION DIAGRAM
4-coumaroylcholine + H2O
coumaric acid + choline
20% of activity with sinapoylcholine
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benzoylcholine + H2O
benzoate + choline
18% of activity with sinapoylcholine
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additional information
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BnSCE3 reveals a broad substrate specificity toward phenolic choline esters, even accepting phosphatidylcholine, pointing to a phospholipase A-like activity
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caffeic acid + choline
25% of activity with sinapoylcholine
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cinnamic acid + choline
51% of activity with sinapoylcholine
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ferulic acid + choline
37% of activity with sinapoylcholine
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choline + sinapate
i.e. sinapine
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sinapoylcholine + H2O
sinapic acid + choline
role for the GDSL lipase-like BnSCE3/BnLIP2 as a sinapine esterase, catalyzing hydrolysis of sinapine during seed germination, leading, via 1-O-sinapoyl-beta-glucose, to sinapoyl-L-malate in the seedlings
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