protein-lysine 6-oxidase activity
Definition
Target type: molecularfunction
Catalysis of the reaction: peptidyl-L-lysyl-peptide + H2O + O2 = peptidyl-allysyl-peptide + NH3 + hydrogen peroxide. [EC:1.4.3.13]
Protein-lysine 6-oxidase activity catalyzes the oxidation of the ε-amino group of lysine residues in proteins to the corresponding α-aminoadipic-δ-semialdehyde, with the concomitant reduction of molecular oxygen to hydrogen peroxide. This enzymatic activity is typically associated with lysine-specific demethylases (LSDs), which play crucial roles in epigenetic regulation by controlling the methylation status of lysine residues in histones and other proteins. The reaction mechanism involves the formation of a covalent intermediate between the enzyme and the lysine substrate, followed by the removal of the methyl group from the lysine residue and its oxidation to α-aminoadipic-δ-semialdehyde. The enzyme's active site contains a non-heme iron cofactor, which is essential for catalysis. This iron atom is coordinated by a conserved histidine residue and a carboxylate group, and it undergoes redox cycling during the reaction. The activity of protein-lysine 6-oxidase is tightly regulated by various factors, including substrate availability, cofactor concentration, and post-translational modifications. Disruption of protein-lysine 6-oxidase activity can lead to dysregulation of gene expression and cellular function, contributing to various diseases.'
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Proteins (5)
| Protein | Definition | Taxonomy |
|---|---|---|
| Protein-lysine 6-oxidase | [no definition available] | Bos taurus (cattle) |
| Lysyl oxidase homolog 2 | A lysyl oxidase homolog 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y4K0] | Homo sapiens (human) |
| Lysyl oxidase homolog 4 | A lysyl oxidase homolog 4 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q96JB6] | Homo sapiens (human) |
| Lysyl oxidase homolog 3 | A lysyl oxidase homolog 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P58215] | Homo sapiens (human) |
| Protein-lysine 6-oxidase | A protein-lysine 6-oxidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P28300] | Homo sapiens (human) |
Compounds (15)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| phenethylamine | 2-phenylethylamine : A phenylethylamine having the phenyl substituent at the 2-position. phenethylamine: RN given refers to parent cpd; structure in Merck Index, 9th ed, #7016 | alkaloid; aralkylamine; phenylethylamine | Escherichia coli metabolite; human metabolite; mouse metabolite |
| pyrithione | pyrithione : A pyridinethione that is pyridine-2(1H)-thione in which the hydrogen attached to the nitrogen is replaced by a hydroxy group. It is a Zn(2+) ionophore; the zinc salt is used as an antifungal and antibacterial agent. pyrithione: split from cephalosporin molecule; some metal complexes of this have fumarate reductase inhibitory activity and may be useful against trypanosomes; RN given refers to parent cpd; structure | monohydroxypyridine; pyridinethione | ionophore |
| aminopropionitrile | Aminopropionitrile: Reagent used as an intermediate in the manufacture of beta-alanine and pantothenic acid. | aminopropionitrile | antineoplastic agent; antirheumatic drug; collagen cross-linking inhibitor; plant metabolite |
| disulfiram | organic disulfide; organosulfur acaricide | angiogenesis inhibitor; antineoplastic agent; apoptosis inducer; EC 1.2.1.3 [aldehyde dehydrogenase (NAD(+))] inhibitor; EC 3.1.1.1 (carboxylesterase) inhibitor; EC 3.1.1.8 (cholinesterase) inhibitor; EC 5.99.1.2 (DNA topoisomerase) inhibitor; ferroptosis inducer; fungicide; NF-kappaB inhibitor | |
| thiram | thiram : An organic disulfide that results from the formal oxidative dimerisation of N,N-dimethyldithiocarbamic acid. It is widely used as a fungicidal seed treatment. Thiram: A dithiocarbamate chemical, used commercially in the rubber processing industry and as a fungicide. In vivo studies indicate that it inactivates the enzyme GLUTATHIONE REDUCTASE. It has mutagenic activity and may induce chromosomal aberrations. | organic disulfide | antibacterial drug; antifungal agrochemical; antiseptic drug |
| benzylamine | aminotoluene : Any member of the class of toluenes carrying one or more amino groups. | aralkylamine; primary amine | allergen; EC 3.5.5.1 (nitrilase) inhibitor; plant metabolite |
| 4-nitrobenzylamine | 4-nitrobenzylamine: RN given refers to parent cpd | ||
| 1-deoxynojirimycin | 1-deoxy-nojirimycin: structure in first source duvoglustat : An optically active form of 2-(hydroxymethyl)piperidine-3,4,5-triol having 2R,3R,4R,5S-configuration. | 2-(hydroxymethyl)piperidine-3,4,5-triol; piperidine alkaloid | anti-HIV agent; anti-obesity agent; bacterial metabolite; EC 3.2.1.20 (alpha-glucosidase) inhibitor; hepatoprotective agent; hypoglycemic agent; plant metabolite |
| miglustat | miglustat : A hydroxypiperidine that is deoxynojirimycin in which the amino hydrogen is replaced by a butyl group. miglustat: a glucosylceramide synthase inhibitor | piperidines; tertiary amino compound | anti-HIV agent; EC 2.4.1.80 (ceramide glucosyltransferase) inhibitor |
| 4-fluorobenzylamine | |||
| 4-pyridylmethylamine | 4-pyridylmethylamine: structure given in first source | ||
| mor-14 | N-methyldeoxynojirimycin: glucosidase inhibitor | hydroxypiperidine; piperidine alkaloid; tertiary amino compound | anti-HIV agent; cardioprotective agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; plant metabolite |
| homonojirimycin | homonojirimycin: inhibits alpha-glucosidase; RN given for (2R-(2alpha,3alpha,4beta,5alpha,6beta))-isomer; structure in first source | ||
| n-nonyl-1-deoxynojirimycin | N-nonyldeoxynojirimycin : A hydroxypiperidine that is deoxynojirimycin (duvoglustat) in which the amino hydrogen is replaced by a nonyl group. | hydroxypiperidine; tertiary amino compound | antiviral agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; EC 3.2.1.45 (glucosylceramidase) inhibitor |
| somatostatin | heterodetic cyclic peptide; peptide hormone |