Enzymes
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Reaction participants Show >> << Hide
- Name help_outline AZD1979 Identifier CHEBI:138980 Charge 1 Formula C25H27N4O5 InChIKeyhelp_outline BKKPIQPFRAPEAY-UHFFFAOYSA-O SMILEShelp_outline C1(CN(C1)C(C=2OC(=NN2)C3=CC=C(C=C3)OC)=O)OC4=CC=C(C=C4)C[NH+]5CC6(C5)COC6 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,485 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline AZD1979 oxetane hydrolysis product Identifier CHEBI:139019 Charge 0 Formula C25H28N4O6 InChIKeyhelp_outline OTFLAJNTHVWZOG-UHFFFAOYSA-N SMILEShelp_outline C1(CN(C1)C(C=2OC(=NN2)C3=CC=C(C=C3)OC)=O)OC4=CC=C(C=C4)CN5CC(C5)(CO)CO 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,932 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:15825 | RHEA:15826 | RHEA:15827 | RHEA:15828 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Oxetane Substrates of Human Microsomal Epoxide Hydrolase.
Toselli F., Fredenwall M., Svensson P., Li X.Q., Johansson A., Weidolf L., Hayes M.A.
Oxetanyl building blocks are increasingly used in drug discovery because of the improved drug-like properties they confer on drug candidates, yet little is currently known about their biotransformation. A series of oxetane-containing analogs was studied and we provide the first direct evidence of ... >> More
Oxetanyl building blocks are increasingly used in drug discovery because of the improved drug-like properties they confer on drug candidates, yet little is currently known about their biotransformation. A series of oxetane-containing analogs was studied and we provide the first direct evidence of oxetane hydrolysis by human recombinant microsomal epoxide hydrolase (mEH). Incubations with human liver fractions and hepatocytes were performed with and without inhibitors of cytochrome P450 (P450), mEH and soluble epoxide hydrolase (sEH). Reaction dependence on NADPH was investigated in subcellular fractions. A full kinetic characterization of oxetane hydrolysis is presented, in both human liver microsomes and human recombinant mEH. In human liver fractions and hepatocytes, hydrolysis by mEH was the only oxetane ring-opening metabolic route, with no contribution from sEH or from cytochrome P450-catalyzed oxidation. Minimally altering the structural elements in the immediate vicinity of the oxetane can greatly modulate the efficiency of hydrolytic ring cleavage. In particular, higher p<i>K</i><sub>a</sub> in the vicinity of the oxetane and an increased distance between the oxetane ring and the benzylic nitrogen improve reaction rate, which is further enhanced by the presence of methyl groups near or on the oxetane. This work defines oxetanes as the first nonepoxide class of substrates for human mEH, which was previously known to catalyze the hydrolytic ring opening of electrophilic and potentially toxic epoxide-containing drugs, drug metabolites, and exogenous organochemicals. These findings will be of value for the development of biologically active oxetanes and may be exploited for the biocatalytic generation of enantiomerically pure oxetanes and diols. << Less
Drug Metab Dispos 45:966-973(2017) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.