Page last updated: 2024-10-24

peptide N-acetyltransferase activity

Definition

Target type: molecularfunction

Catalysis of the acetylation of an amino acid residue of a peptide or protein, according to the reaction: acetyl-CoA + peptide = CoA + N-acetylpeptide. [GOC:mah]

Peptide N-acetyltransferase activity is a molecular function that describes the ability of enzymes to catalyze the transfer of an acetyl group from acetyl-CoA to the N-terminal amino group of a peptide. This enzymatic reaction is crucial for a wide range of cellular processes, including protein stability, signal transduction, and regulation of protein function.

The reaction mechanism typically involves a two-step process:
1. The enzyme binds to both acetyl-CoA and the peptide substrate.
2. The acetyl group is transferred from acetyl-CoA to the N-terminal amino group of the peptide, resulting in the formation of an N-acetylpeptide and CoA.

The N-acetylation of peptides can significantly alter their properties, including:

* **Increased stability:** N-terminal acetylation can protect peptides from proteolytic degradation, enhancing their stability.
* **Altered cellular localization:** N-acetylation can influence the subcellular localization of peptides by affecting their interactions with other cellular components.
* **Modulation of protein-protein interactions:** N-acetylation can modify the binding affinity of peptides to other proteins, regulating their interactions.
* **Regulation of protein function:** N-acetylation can directly affect the activity of certain proteins by modulating their conformation or interactions with other molecules.

N-acetyltransferase activity is performed by a diverse group of enzymes known as N-acetyltransferases (NATs). These enzymes are highly specific for their substrate peptides and play crucial roles in various cellular pathways.

The diversity of N-acetyltransferases and their distinct substrate specificities highlight the importance of this molecular function in regulating a wide range of cellular processes.'
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Proteins (4)

ProteinDefinitionTaxonomy
CREB-binding proteinA CREB-binding protein that is encoded in the genome of human. [PMID:11331617]Homo sapiens (human)
Histone acetyltransferase p300A histone acetyltransferase p300 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q09472]Homo sapiens (human)
CREB-binding proteinA CREB-binding protein that is encoded in the genome of human. [PMID:11331617]Homo sapiens (human)
Histone acetyltransferase p300A histone acetyltransferase p300 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q09472]Homo sapiens (human)

Compounds (48)

CompoundDefinitionClassesRoles
4-aminophenol4-aminophenol : An amino phenol (one of the three possible isomers) which has the single amino substituent located para to the phenolic -OH group.

4-aminophenol: RN given refers to parent cpd
aminophenolallergen;
metabolite
altretamineAltretamine: A hexamethyl-2,4,6-triamine derivative of 1,3,5-triazine.triamino-1,3,5-triazine
cgs 159439-chloro-2-(2-furyl)-(1,2,4)triazolo(1,5-c)quinazolin-5-imine: non-xanthine triazoloquinazoline adenosine antagonist

CGS 15943 : A member of the class of triazoloquinazolines that is [1,2,4]triazolo[1,5-c]quinazoline substited at positions 2, 5 and 9 by furan-2-yl, amino and chloro groups respectively. A potent antagonist at adenosine A1 and adenosine A2A receptors.
aromatic amine;
biaryl;
furans;
organochlorine compound;
primary amino compound;
quinazolines;
triazoloquinazoline
adenosine A1 receptor antagonist;
adenosine A2A receptor antagonist;
antineoplastic agent;
central nervous system stimulant
etazolateetazolate : A pyrazolopyridine that is 1H-pyrazolo[3,4-b]pyridine which is substituted at positions 1, 4, and 5 by ethyl, 2-isopropylidenehydrazino, and ethoxycarbonyl groups, respectively. A phosphodiesterase IV inhibitor with antidepressant and anxiolytic properties.

Etazolate: A potent phosphodiesterase inhibitor proposed as an antipsychotic agent.
ethyl ester;
hydrazone;
pyrazolopyridine
alpha-secretase activator;
antidepressant;
antipsychotic agent;
anxiolytic drug;
GABA agent;
neuroprotective agent;
phosphodiesterase IV inhibitor
nocodazolearomatic ketone;
benzimidazoles;
carbamate ester;
thiophenes
antimitotic;
antineoplastic agent;
microtubule-destabilising agent;
tubulin modulator
papaverinepapaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum.

Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
benzylisoquinoline alkaloid;
dimethoxybenzene;
isoquinolines
antispasmodic drug;
vasodilator agent
ici 136,753pyrazolopyridine
3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole3-(5'-hydroxymethyl-2'-furyl)-1-benzylindazole: antineoplastic; activates platelet guanylate cyclase; a radiosensitizing agent and guanylate cyclase activator; structure in first source

lificiguat : A member of the class of indazoles that is 1H-indazole which is substituted by a benzyl group at position 1 and a 5-(hydroxymethyl)-2-furyl group at position 3. It is an activator of soluble guanylate cyclase and inhibits platelet aggregation.
aromatic primary alcohol;
furans;
indazoles
antineoplastic agent;
apoptosis inducer;
platelet aggregation inhibitor;
soluble guanylate cyclase activator;
vasodilator agent
colchicine(S)-colchicine : A colchicine that has (S)-configuration. It is a secondary metabolite, has anti-inflammatory properties and is used to treat gout, crystal-induced joint inflammation, familial Mediterranean fever, and many other conditions.alkaloid;
colchicine
anti-inflammatory agent;
gout suppressant;
mutagen
plumbaginplumbagin : A hydroxy-1,4-naphthoquinone that is 1,4-naphthoquinone in which the hydrogens at positions 2 and 5 are substituted by methyl and hydroxy groups, respectively.

plumbagin: a superoxide anion generator
hydroxy-1,4-naphthoquinone;
phenols
anticoagulant;
antineoplastic agent;
immunological adjuvant;
metabolite
n-methylpyrrolidone1-methylpyrrolidin-2-one: structure in first source

N-methylpyrrolidin-2-one : A member of the class of pyrrolidine-2-ones that is pyrrolidin-2-one in which the hydrogen attached to the nitrogen is replaced by a methyl group.
lactam;
N-alkylpyrrolidine;
pyrrolidin-2-ones
polar aprotic solvent
palmatineburasaine: structure in first sourceberberine alkaloid;
organic heterotetracyclic compound
plant metabolite
4-Methyl-1,3,4,5-tetrahydro-2H-1,5-benzodiazepin-2-onebenzodiazepine
epigallocatechin gallate(-)-epigallocatechin 3-gallate : A gallate ester obtained by the formal condensation of gallic acid with the (3R)-hydroxy group of (-)-epigallocatechin.

epigallocatechin gallate: a steroid 5alpha-reductase inhibitor and antimutagen in green tea (Camellia sinensis)
flavans;
gallate ester;
polyphenol
antineoplastic agent;
antioxidant;
apoptosis inducer;
geroprotector;
Hsp90 inhibitor;
neuroprotective agent;
plant metabolite
delphinidindelphinidin chloride : An anthocyanidin chloride that has delphinidin as the cationic counterpart.

Paraffin: A mixture of solid hydrocarbons obtained from petroleum. It has a wide range of uses including as a stiffening agent in ointments, as a lubricant, and as a topical anti-inflammatory. It is also commonly used as an embedding material in histology.
anthocyanidin chloride
haloproginvenenatine: RN given for (3beta,16beta,17beta,20alpha)-isomer; structure in first source
taxodionetaxodione: structurediterpenoid
coenzyme aadenosine 3',5'-bisphosphatecoenzyme;
Escherichia coli metabolite;
mouse metabolite
c.i. direct red 23C.I. Direct Red 23: azo dye; structure in first source
oxoglaucine1,2,9,10-tetramethoxy-7H-dibenzo(de,g)quinolin-7-one: a phosphatidylinositol 3-kinase p110alpha inhibitor that reactivates latent HIV-1; structure in first sourceisoquinoline alkaloid
n-(4-(7-diethylamino-4-methylcoumarin-3-yl)phenyl)maleimide7-diethylamino-3-(4-maleimidophenyl)-4-methylcoumarin : A member of the class of coumarins that is 2H-chromen-2-one substituted by 4-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)phenyl, methyl, and diethylamino groups at positions 3, 4 and 7, respectively. It is a thiol-reactive fluorescent dye.

N-(4-(7-diethylamino-4-methylcoumarin-3-yl)phenyl)maleimide: structure given in first source
benzenes;
coumarins;
maleimides;
tertiary amino compound
fluorescent dye
anacardic acidanacardic acid : A hydroxybenzoic acid that is salicylic acid substituted by a pentadecyl group at position 6. It is a major component of cashew nut shell liquid and exhibits an extensive range of bioactivities.

anacardic acid: isolated from Anacardium occidentale; monophenol monooxygenase inhibitor
hydroxy monocarboxylic acid;
hydroxybenzoic acid
anti-inflammatory agent;
antibacterial agent;
anticoronaviral agent;
apoptosis inducer;
EC 2.3.1.48 (histone acetyltransferase) inhibitor;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
neuroprotective agent;
plant metabolite
mrs 12209-chloro-2-(2-furyl)-5-phenylacetylamino(1,2,4)triazolo(1,5-c)quinazoline: structure in first sourcequinazolines
rolipram(-)-rolipram : The (R)-enantiomer of rolipram.rolipram
2-methyl-2,3,4,5-tetrahydro-1,5-benzoxazepin-4-oneorganonitrogen heterocyclic compound;
oxacycle
methyl indole-3-carboxylatemethyl indole-3-carboxylate : The methyl ester of indole-3-carboxylic acid.indoles;
methyl ester
metabolite
4-(1H-benzimidazol-2-ylmethylthio)-2-methylbenzofuro[3,2-d]pyrimidinebenzimidazoles
2-(4-benzofuro[3,2-d]pyrimidinylthio)-1-thiophen-2-ylethanonebenzofurans
curcumincurcumin : A beta-diketone that is methane in which two of the hydrogens are substituted by feruloyl groups. A natural dyestuff found in the root of Curcuma longa.

Curcumin: A yellow-orange dye obtained from tumeric, the powdered root of CURCUMA longa. It is used in the preparation of curcuma paper and the detection of boron. Curcumin appears to possess a spectrum of pharmacological properties, due primarily to its inhibitory effects on metabolic enzymes.
aromatic ether;
beta-diketone;
diarylheptanoid;
enone;
polyphenol
anti-inflammatory agent;
antifungal agent;
antineoplastic agent;
biological pigment;
contraceptive drug;
dye;
EC 1.1.1.205 (IMP dehydrogenase) inhibitor;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
EC 1.1.1.25 (shikimate dehydrogenase) inhibitor;
EC 1.6.5.2 [NAD(P)H dehydrogenase (quinone)] inhibitor;
EC 1.8.1.9 (thioredoxin reductase) inhibitor;
EC 2.7.10.2 (non-specific protein-tyrosine kinase) inhibitor;
EC 3.5.1.98 (histone deacetylase) inhibitor;
flavouring agent;
food colouring;
geroprotector;
hepatoprotective agent;
immunomodulator;
iron chelator;
ligand;
lipoxygenase inhibitor;
metabolite;
neuroprotective agent;
nutraceutical;
radical scavenger
4-[2-(9-methyl-6-indolo[3,2-b]quinoxalinyl)ethyl]morpholinequinoxaline derivative
umi-77UMI-77: an Mcl-1 inhibitor; structure in first source
N-[4,6-bis(4-morpholinyl)-1,3,5-triazin-2-yl]-2-(methylthio)-1,3-benzothiazol-6-aminebenzothiazoles
cyqualoncyclovalone: is a synthetic curcumin derivative; structure in first source
fisetin3'-hydroxyflavonoid;
7-hydroxyflavonol;
tetrahydroxyflavone
anti-inflammatory agent;
antioxidant;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
metabolite;
plant metabolite
guttiferone eguttiferone E: isolated from the fruits of Garcinia pyrifera collected in Malaysia; structure in first source
2-hydroxy-6-[(8Z,11Z)-pentadeca-8,11,14-trien-1-yl]benzoic acidhydroxybenzoic acid
6h-thieno[3,2-f][1,2,4]triazolo[4,3-a][1,4]diazepine-6-acetamide, 4-(4-chlorophenyl)-n-(4-hydroxyphenyl)-2,3,9-trimethyl-, (6s)-organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
chetomin
camboginisogarcinol: has immunosuppresant activity; isolated from Garcinia mangostana; structure in first source
icg 001peptide
3,4-dimethoxy-n-((2,2-dimethyl-2h-chromen-6-yl)methyl)-n-phenylbenzenesulfonamide3,4-dimethoxy-N-((2,2-dimethyl-2H-chromen-6-yl)methyl)-N-phenylbenzenesulfonamide: has antineoplastic activity; structure in first source
jq1 compoundcarboxylic ester;
organochlorine compound;
tert-butyl ester;
thienotriazolodiazepine
angiogenesis inhibitor;
anti-inflammatory agent;
antineoplastic agent;
apoptosis inducer;
bromodomain-containing protein 4 inhibitor;
cardioprotective agent;
ferroptosis inducer
gsk525762amolibresib: mimicks acetylated histones; structure in first sourcebenzodiazepine
gsk1210151aGSK1210151A: inhibitor of the BET family of proteins; structure in first sourceimidazoquinoline
i-bet726
2-methoxy-n-(3-methyl-2-oxo-1,2,3,4-tetrahydroquinazolin-6-yl)benzenesulfonamide2-methoxy-N-(3-methyl-2-oxo-1,2,3,4-tetrahydroquinazolin-6-yl)benzenesulfonamide: a probe for bromo and extra C-terminal domain proteins; structure in first sourcequinazolines
1,2-bis(isothiazol-5-yl)disulfane1,2-bis(isothiazol-5-yl)disulfane: structure in first source
rvx 208apabetalone: a bromodomain and extra-terminal domain protein (BET) inhibitor; prevents interactions between BET proteins and acetyl-lysine residues on histone tails to modify epigenetic regulation