Target type: molecularfunction
Catalysis of the reaction: N6-octadecanoyl-L-lysyl-[protein] + NAD+ + H2O = octadecanoyl-ADP-D-ribose + L-lysyl-[protein] + nicotinamide. [PMID:23552949, RHEA:70563]
NAD-dependent protein depalmitoylase activity is a critical enzymatic function involved in the removal of palmitic acid, a saturated fatty acid, from proteins. This process, known as depalmitoylation, plays a vital role in regulating protein function, localization, and interactions.
Palmitoylation is a reversible post-translational modification where palmitic acid is attached to cysteine residues in proteins. This modification can alter protein conformation, enhance membrane association, and facilitate protein-protein interactions.
NAD-dependent protein depalmitoylases, also known as acyl-protein thioesterases, utilize NAD+ as a cofactor to catalyze the hydrolysis of the thioester bond between palmitic acid and cysteine residues. The enzyme's active site contains a catalytic triad of amino acids, typically consisting of a serine, a histidine, and an aspartate residue, that facilitate the hydrolysis reaction.
The removal of palmitic acid by NAD-dependent protein depalmitoylases can have profound effects on protein function. Depalmitoylation can disrupt membrane association, alter protein-protein interactions, and expose cryptic signaling motifs, leading to changes in protein activity, localization, and stability.
This enzymatic activity is crucial in a wide range of cellular processes, including:
* **Signal transduction:** Depalmitoylation regulates the activity of signaling proteins, such as G protein-coupled receptors and Ras GTPases, by modulating their membrane association and interactions with downstream effectors.
* **Protein trafficking:** Depalmitoylation controls the localization and transport of proteins by influencing their interactions with chaperones and trafficking machinery.
* **Cellular morphology:** Depalmitoylation influences the organization and dynamics of cellular structures, such as the cytoskeleton and lipid rafts.
Defects in NAD-dependent protein depalmitoylase activity can lead to a range of cellular dysfunction and contribute to the development of various diseases, including cancer, neurodegenerative disorders, and metabolic diseases.
In summary, NAD-dependent protein depalmitoylase activity is a crucial enzymatic process that regulates protein function, localization, and interactions by removing palmitic acid from proteins. This activity is essential for a wide range of cellular processes and plays a significant role in maintaining cellular homeostasis.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| NAD-dependent protein deacetylase sirtuin-6 | An NAD-dependent protein deacylase sirtuin-6 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q8N6T7] | Homo sapiens (human) |
| NAD-dependent protein deacetylase sirtuin-2 | An NAD-dependent protein deacetylase sirtuin-2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q8IXJ6] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| niacinamide | nicotinamide : A pyridinecarboxamide that is pyridine in which the hydrogen at position 3 is replaced by a carboxamide group. | pyridine alkaloid; pyridinecarboxamide; vitamin B3 | anti-inflammatory agent; antioxidant; cofactor; EC 2.4.2.30 (NAD(+) ADP-ribosyltransferase) inhibitor; EC 3.5.1.98 (histone deacetylase) inhibitor; Escherichia coli metabolite; geroprotector; human urinary metabolite; metabolite; mouse metabolite; neuroprotective agent; Saccharomyces cerevisiae metabolite; Sir2 inhibitor |
| pyrazinamide | pyrazinecarboxamide : A monocarboxylic acid amide resulting from the formal condensation of the carboxy group of pyrazinoic acid (pyrazine-2-carboxylic acid) with ammonia. A prodrug for pyrazinoic acid, pyrazinecarboxamide is used as part of multidrug regimens for the treatment of tuberculosis. | monocarboxylic acid amide; N-acylammonia; pyrazines | antitubercular agent; prodrug |
| pyrazinoic acid | pyrazine-2-carboxylic acid : The parent compound of the class of pyrazinecarboxylic acids, that is pyrazine bearing a single carboxy substituent. The active metabolite of the antitubercular drug pyrazinamide. pyrazinoic acid: active metabolite of pyrazinamide; structure | pyrazinecarboxylic acid | antitubercular agent; drug metabolite |
| bisindolylmaleimide i | bisindolylmaleimide I: a bis(indolyl)maleimide | ||
| 2-(1-(2-(1-methylpyrrolidino)ethyl)-1h-indol-3-yl)maleimide | bisindolylmaleimide II: protein kinase C inhibitor; see also bisindolylmaleimide I | ||
| bisindolylmaleimide iv | indoles; maleimides | ||
| bisindolylmaleimide v | bisindolylmaleimide V: used as a negative control compound for protein kinase C inhibition; structure in first source; | indoles | |
| go 6976 | indolocarbazole; organic heterohexacyclic compound | EC 2.7.11.13 (protein kinase C) inhibitor | |
| idebenone | 1,4-benzoquinones; primary alcohol | antioxidant; ferroptosis inhibitor | |
| nsc 664704 | kenpaullone : An indolobenzazepine that is paullone in which the hydrogen at position 9 is replaced by a bromo substituent. It is an ATP-competitive inhibitor of cyclin-dependent kinases (CDKs) and glycogen synthase kinase 3beta (GSK3beta). kenpaullone: inhibits CDK1/cyclin B; structure in first source | indolobenzazepine; lactam; organobromine compound | cardioprotective agent; EC 2.7.11.22 (cyclin-dependent kinase) inhibitor; EC 2.7.11.26 (tau-protein kinase) inhibitor; geroprotector |
| fenamic acid | fenamic acid : An aminobenzoic acid that is the N-phenyl derivative of anthranilic acid. It acts as a parent skeleton for the synthesis of several non-steroidal anti-inflammatory drugs. fenamic acid: has chloride and potassium channel-blocking activity; RN given refers to parent cpd | aminobenzoic acid; secondary amino compound | membrane transport modulator |
| ro 31-8220 | Ro 31-8220: a protein kinase C inhibitor | imidothiocarbamic ester; indoles; maleimides | EC 2.7.11.13 (protein kinase C) inhibitor |
| fenofibrate | benzochromenone; delta-lactone; naphtho-alpha-pyrone | platelet aggregation inhibitor; Sir2 inhibitor | |
| suramin | suramin : A member of the class of phenylureas that is urea in which each of the amino groups has been substituted by a 3-({2-methyl-5-[(4,6,8-trisulfo-1-naphthyl)carbamoyl]phenyl}carbamoyl)phenyl group. An activator of both the rabbit skeletal muscle RyR1 and sheep cardiac RyR2 isoform ryanodine receptor channels, it has been used for the treatment of human African trypanosomiasis for over 100 years. Suramin: A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties. | naphthalenesulfonic acid; phenylureas; secondary carboxamide | angiogenesis inhibitor; antinematodal drug; antineoplastic agent; apoptosis inhibitor; EC 2.7.11.13 (protein kinase C) inhibitor; GABA antagonist; GABA-gated chloride channel antagonist; purinergic receptor P2 antagonist; ryanodine receptor agonist; trypanocidal drug |
| suramin sodium | suramin sodium : An organic sodium salt that is the hexasodium salt of suramin. It is an FDA approved drug for African sleeping sickness and river blindness. | organic sodium salt | angiogenesis inhibitor; antinematodal drug; antineoplastic agent; apoptosis inhibitor; EC 2.7.11.13 (protein kinase C) inhibitor; GABA antagonist; GABA-gated chloride channel antagonist; purinergic receptor P2 antagonist; ryanodine receptor agonist; trypanocidal drug |
| toxoflavin | toxoflavin : A pyrimidotriazine that is 1,6-dimethyl-1,5,6,7-tetrahydropyrimido[5,4-e][1,2,4]triazine with oxo groups at positions 5 and 7. toxoflavin: azapteridine antibiotic; structure | carbonyl compound; pyrimidotriazine | antibacterial agent; antineoplastic agent; apoptosis inducer; bacterial metabolite; toxin; virulence factor; Wnt signalling inhibitor |
| 1-(4-nitrophenyl)piperazine | 1-(4-nitrophenyl)piperazine: structure in first source | ||
| rubimaillin | rubimaillin : A benzochromene that is 2H-benzo[h]chromene which is substituted by two methyl groups at position 2, a methoxycarbonyl group at position 5, and a hydroxy group at position 6. Found in the Chinese medical plant Rubia cordifola, It has an anti-cancer effect by inhibition of TNF-alpha-induced NF-kappaB activation. It is also a dual inhibitor of acyl-CoA:cholesterol acyltransferase 1 and 2 (ACAT1 and ACAT2), but is more selective for the ACAT2 isozyme. rubimaillin: structure given in first source | benzochromene; methyl ester; phenols | acyl-CoA:cholesterol acyltransferase 2 inhibitor; anti-inflammatory agent; antineoplastic agent; apoptosis inducer; neuroprotective agent; NF-kappaB inhibitor; plant metabolite |
| 5-chloropyrazinamide | |||
| paullone | paullone : An indolobenzazepine that is 5,6,7,12-tetrahydroindolo[3,2-d][1]benzazepine carrying an oxo substituent at position 6. paullone: structure in first source | indolobenzazepine; lactam | EC 2.7.11.22 (cyclin-dependent kinase) inhibitor; EC 2.7.11.26 (tau-protein kinase) inhibitor |
| hyperforin | hyperforin : A cyclic terpene ketone that is a prenylated carbobicyclic acylphloroglucinol derivative produced by St. John's Wort, Hypericum perforatum. hyperforin: a prenylated acylphloroglucinol derivative; antibiotic component of novoimanine; psychoactive agent in St. John's wort; Russian; structure; | ||
| trichostatin a | trichostatin A: chelates zinc ion in the active site of histone deacetylases, resulting in preventing histone unpacking so DNA is less available for transcription; do not confuse with TRICHOSANTHIN which is a protein; found in STREPTOMYCES | antibiotic antifungal agent; hydroxamic acid; trichostatin | bacterial metabolite; EC 3.5.1.98 (histone deacetylase) inhibitor; geroprotector |
| resveratrol | trans-resveratrol : A resveratrol in which the double bond has E configuration. | resveratrol | antioxidant; phytoalexin; plant metabolite; quorum sensing inhibitor; radical scavenger |
| (3R,5S)-fluvastatin | (3R,5S)-fluvastatin : A (6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid diastereoisomer in which the stereocentres beta- and delta- to the carboxy group have R and S configuration, respectively. The drug fluvastatin is an equimolar mixture of this compound and its enantiomer. | (6E)-7-[3-(4-fluorophenyl)-1-(propan-2-yl)-1H-indol-2-yl]-3,5-dihydroxyhept-6-enoic acid; statin (synthetic) | |
| 3-(1-azepanylsulfonyl)-n-(3-bromphenyl)benzamide | 3-(1-azepanylsulfonyl)-N-(3-bromphenyl)benzamide: a sirtuin 2 inhibitor; structure in first source | ||
| 1,4-bis[2-(4-hydroxyphenyl)ethylamino]anthracene-9,10-dione | anthraquinone | ||
| sirtinol | aldimine; benzamides; naphthols | anti-inflammatory agent; EC 3.5.1.98 (histone deacetylase) inhibitor; Sir2 inhibitor | |
| cambinol | cambinol: inhibitor of human silent information regulator 2 enzymes; structure in first source | ||
| (4-chlorophenyl)-[4-(8-nitro-5-quinolinyl)-1-piperazinyl]methanone | N-arylpiperazine | ||
| ex 527 | 6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide : A member of the class of carbazoles that is 2,3,4,9-tetrahydro-1H-carbazole which is substituted at position 1 by an aminocarbohyl group and at position 6 by a chlorine. 6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide: structure in first source | carbazoles; monocarboxylic acid amide; organochlorine compound | |
| su 11248 | monocarboxylic acid amide; pyrroles | angiogenesis inhibitor; antineoplastic agent; EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor; immunomodulator; neuroprotective agent; vascular endothelial growth factor receptor antagonist | |
| panobinostat | panobinostat : A hydroxamic acid obtained by formal condensation of the carboxy group of (2E)-3-[4-({[2-(2-methylindol-3-yl)ethyl]amino}methyl)phenyl]prop-2-enoic acid with the amino group of hydroxylamine. A histone deacetylase inhibitor used (as its lactate salt) in combination with bortezomib and dexamethasone for the treatment of multiple myeloma. Panobinostat: An indole and hydroxamic acid derivative that acts as a HISTONE DEACETYLASE inhibitor. It is used as an antineoplastic agent in combination with BORTEZOMIB and DEXAMETHASONE for the treatment of MULTIPLE MYELOMA. | cinnamamides; hydroxamic acid; methylindole; secondary amino compound | angiogenesis modulating agent; antineoplastic agent; EC 3.5.1.98 (histone deacetylase) inhibitor |
| oblongifolin c | oblongifolin C: has antineoplastic activity; isolated from Garcinia yunnanensis; structure in first source | ||
| quisinostat | indoles | ||
| srt1460 | SRT1460: small molecule activator of SIRT1 as therapeutics for the treatment of type 2 diabetes; structure in first source | ||
| srt1720 | |||
| srt2183 | SRT2183: small molecule activator of SIRT1 as therapeutics for the treatment of type 2 diabetes; structure in first source | ||
| tenovin-6 | tenovin-6 : A monocarboxylic acid amide obtained by formal condensation of the carboxy group of 5-(dimethylamino)pentanoic acid with the aromatic amino group of N-[(4-aminophenyl)carbamothioyl]-4-tert-butylbenzamide. | monocarboxylic acid amide; tertiary amino compound; thioureas | antineoplastic agent; p53 activator; Sir2 inhibitor |
| ly2784544 | pyridazines | ||
| acy-1215 | ricolinostat: an HDAC6 inhibitor; structure in first source | pyrimidinecarboxylic acid | |
| aristoforin | Aristoforin: derivative of hyperforin, is a potent anticancer agent; structure in first source | ||
| n-(3-((2-hydroxynaphthalen-1-ylmethylene)amino)phenyl)-2-phenylpropionamide |