Literature summary extracted from

Duhaiman, A.S.
Inhibition of zeta-crystallin by coumarins: a structure-activity study (1996), J. Protein Chem., 15, 261-264.

Inhibitors

EC Number	Inhibitors	Comment	Organism	Structure
1.6.5.5	4-Hydroxycoumarin	reversible time-independent inhibition. Only dicoumarol, 4-hydroxycoumarin and warfarin inhibit in micromolar ranges. 7-Hydroxy-4-methylcoumarin is ineffective. Competitive inhibition with respect to 2,6-dichlorophenolindophenol, uncompetitive with respect to NADPH. Phenolic hydroxyl group at the C-4 position in the coumarin skeleton is important for the maximal inhibition. Sequence of potency for the inhibitors in descending order: dicoumarol, 4-hydroxycoumarin, warfarin, coumarin	Camelus dromedarius
1.6.5.5	coumarin	reversible time-independent inhibition. Only dicoumarol, 4-hydroxycoumarin and warfarin inhibit in micromolar ranges. 7-Hydroxy-4-methylcoumarin is ineffective. Competitive inhibition with respect to 2,6-dichlorophenolindophenol, uncompetitive with respect to NADPH. Phenolic hydroxyl group at the C-4 position in the coumarin skeleton is important for the maximal inhibition. Sequence of potency for the inhibitors in descending order: dicoumarol, 4-hydroxycoumarin, warfarin, coumarin	Camelus dromedarius
1.6.5.5	dicoumarol	reversible time-independent inhibition. Only dicoumarol, 4-hydroxycoumarin and warfarin inhibit in micromolar ranges. 7-Hydroxy-4-methylcoumarin is ineffective. Competitive inhibition with respect to 2,6-dichlorophenolindophenol, uncompetitive with respect to NADPH. Phenolic hydroxyl group at the C-4 position in the coumarin skeleton is important for the maximal inhibition.Sequence of potency for the inhibitors in descending order: dicoumarol, 4-hydroxycoumarin, warfarin, coumarin	Camelus dromedarius
1.6.5.5	warfarin	reversible time-independent inhibition. Only dicoumarol, 4-hydroxycoumarin and warfarin inhibit in micromolar ranges. 7-Hydroxy-4-methylcoumarin is ineffective. Competitive inhibition with respect to 2,6-dichlorophenolindophenol, uncompetitive with respect to NADPH. Phenolic hydroxyl group at the C-4 position in the coumarin skeleton is important for the maximal inhibition. Sequence of potency for the inhibitors in descending order: dicoumarol, 4-hydroxycoumarin, warfarin, coumarin	Camelus dromedarius

Organism

EC Number	Organism	UniProt	Comment	Textmining
1.6.5.5	Camelus dromedarius	-	camel	-

Source Tissue

EC Number	Source Tissue	Comment	Organism	Textmining
1.6.5.5	lens	-	Camelus dromedarius	-

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Release 2023.1 (January 2023)