Page last updated: 2024-10-24

catalytic complex

Definition

Target type: cellularcomponent

A protein complex which is capable of catalytic activity. [GOC:bhm, GOC:TermGenie, PMID:8077207]

A catalytic complex is a multi-protein assembly that facilitates a biochemical reaction. The cellular component of a catalytic complex encompasses the specific location within a cell where the complex resides and functions. This location can vary depending on the specific complex and its role in cellular processes. Here are some key features of the cellular component of a catalytic complex:

* **Subcellular Localization:** The complex may be localized to a particular organelle, such as the nucleus, cytoplasm, mitochondria, endoplasmic reticulum, Golgi apparatus, or lysosomes. This localization is crucial for the complex to interact with its specific substrates and participate in the relevant metabolic pathway.

* **Association with Membranes:** Some complexes may be associated with cellular membranes, such as the plasma membrane or internal organelle membranes. Membrane association often provides a platform for complex assembly and facilitates interactions with membrane-bound substrates or signaling molecules.

* **Scaffolding Proteins:** Catalytic complexes often rely on scaffolding proteins to provide structural support and organize the complex's components. Scaffolding proteins can act as anchors, bringing together different enzymes or regulatory proteins to form a functional unit.

* **Dynamic Assembly and Disassembly:** Many catalytic complexes are dynamic structures that can assemble and disassemble in response to cellular signals or changes in cellular conditions. This dynamic nature allows for regulation of complex activity and adaptation to cellular needs.

* **Spatial Organization:** The cellular component of a catalytic complex can play a crucial role in regulating the spatial organization of cellular processes. For example, complexes involved in DNA replication or transcription might be localized to specific regions of the nucleus, ensuring proper control and regulation of these events.

Examples of catalytic complexes and their cellular components include:

* **Ribosomes:** These complexes are located in the cytoplasm and are responsible for protein synthesis.
* **DNA Polymerases:** These complexes are found in the nucleus and are essential for DNA replication.
* **RNA Polymerases:** These complexes are also localized to the nucleus and are responsible for transcription.
* **ATP Synthase:** This complex is located in the mitochondria and is responsible for ATP production.

Understanding the cellular component of a catalytic complex is essential for comprehending its function and regulation within the cell.'
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Proteins (8)

ProteinDefinitionTaxonomy
Enoyl-[acyl-carrier-protein] reductase [NADH] FabIAn enoyl-[acyl-carrier-protein] reductase [NADH] FabI that is encoded in the genome of Escherichia coli K-12. [PRO:DNx, UniProtKB:P0AEK4]Escherichia coli K-12
DNA (cytosine-5)-methyltransferase 3AA DNA (cytosine-5)-methyltransferase 3A that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y6K1]Homo sapiens (human)
Sialidase-2A sialidase-2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y3R4]Homo sapiens (human)
DNA (cytosine-5)-methyltransferase 3-likeA DNA (cytosine-5)-methyltransferase 3-like that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9UJW3]Homo sapiens (human)
DNA (cytosine-5)-methyltransferase 3BA DNA (cytosine-5)-methyltransferase 3B that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9UBC3]Homo sapiens (human)
Cytosolic beta-glucosidaseA cytosolic beta-glucosidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9H227]Homo sapiens (human)
Calmodulin-1A calmodulin (human) that is a translation product of the CALM1 gene. [PRO:DAN, UniProtKB:P0DP23]Homo sapiens (human)
Lipoprotein lipaseA lipoprotein lipase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P06858]Homo sapiens (human)

Compounds (65)

CompoundDefinitionClassesRoles
chlorpromazinechlorpromazine : A substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropanamine moiety.

Chlorpromazine: The prototypical phenothiazine antipsychotic drug. Like the other drugs in this class chlorpromazine's antipsychotic actions are thought to be due to long-term adaptation by the brain to blocking DOPAMINE RECEPTORS. Chlorpromazine has several other actions and therapeutic uses, including as an antiemetic and in the treatment of intractable hiccup.
organochlorine compound;
phenothiazines;
tertiary amine
anticoronaviral agent;
antiemetic;
dopaminergic antagonist;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
phenothiazine antipsychotic drug
danthronchrysazin : A dihydroxyanthraquinone that is anthracene-9,10-dione substituted by hydroxy groups at positions 1 and 8.

danthron: structure
dihydroxyanthraquinoneapoptosis inducer;
plant metabolite
emodinemodin : A trihydroxyanthraquinone that is 9,10-anthraquinone which is substituted by hydroxy groups at positions 1, 3, and 8 and by a methyl group at position 6. It is present in the roots and barks of numerous plants (particularly rhubarb and buckthorn), moulds, and lichens. It is an active ingredient of various Chinese herbs.

Emodin: Purgative anthraquinone found in several plants, especially RHAMNUS PURSHIANA. It was formerly used as a laxative, but is now used mainly as a tool in toxicity studies.
trihydroxyanthraquinoneantineoplastic agent;
laxative;
plant metabolite;
tyrosine kinase inhibitor
procainamideprocainamide : A benzamide that is 4-aminobenzamide substituted on the amide N by a 2-(diethylamino)ethyl group. It is a pharmaceutical antiarrhythmic agent used for the medical treatment of cardiac arrhythmias.

Procainamide: A class Ia antiarrhythmic drug that is structurally-related to PROCAINE.
benzamidesanti-arrhythmia drug;
platelet aggregation inhibitor;
sodium channel blocker
promethazinepromethazine : A tertiary amine that is a substituted phenothiazine in which the ring nitrogen at position 10 is attached to C-3 of an N,N-dimethylpropan-2-amine moiety.

Promethazine: A phenothiazine derivative with histamine H1-blocking, antimuscarinic, and sedative properties. It is used as an antiallergic, in pruritus, for motion sickness and sedation, and also in animals.
phenothiazines;
tertiary amine
anti-allergic agent;
anticoronaviral agent;
antiemetic;
antipruritic drug;
H1-receptor antagonist;
local anaesthetic;
sedative
triclosanaromatic ether;
dichlorobenzene;
monochlorobenzenes;
phenols
antibacterial agent;
antimalarial;
drug allergen;
EC 1.3.1.9 [enoyl-[acyl-carrier-protein] reductase (NADH)] inhibitor;
EC 1.5.1.3 (dihydrofolate reductase) inhibitor;
fungicide;
persistent organic pollutant;
xenobiotic
trifluoperazineN-alkylpiperazine;
N-methylpiperazine;
organofluorine compound;
phenothiazines
antiemetic;
calmodulin antagonist;
dopaminergic antagonist;
EC 1.8.1.12 (trypanothione-disulfide reductase) inhibitor;
EC 5.3.3.5 (cholestenol Delta-isomerase) inhibitor;
phenothiazine antipsychotic drug
diphenylmethanediphenylmethane : A diarylmethane that is methane substituted by two phenyl groups.diarylmethane
dichlonedichlone: structure
rheindihydroxyanthraquinone
hesperidinhesperidin : A disaccharide derivative that consists of hesperetin substituted by a 6-O-(alpha-L-rhamnopyranosyl)-beta-D-glucopyranosyl moiety at position 7 via a glycosidic linkage.

Hesperidin: A flavanone glycoside found in CITRUS fruit peels.
3'-hydroxyflavanones;
4'-methoxyflavanones;
dihydroxyflavanone;
disaccharide derivative;
flavanone glycoside;
monomethoxyflavanone;
rutinoside
mutagen
flavoneflavone : The simplest member of the class of flavones that consists of 4H-chromen-4-one bearing a phenyl substituent at position 2.

flavone: RN given refers to unlabeled cpd; structure given in first source
flavonesmetabolite;
nematicide
evernic acidevernic acid: RN given refers to parent cpdcarbonyl compound
3-hydroxyflavone3-hydroxyflavone: structure given in first source

flavonol : A monohydroxyflavone that is the 3-hydroxy derivative of flavone.
flavonols;
monohydroxyflavone
psoromic acidpsoromic acid: structure in first sourcecarbonyl compound
1-deoxynojirimycin1-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
zanamivirZanamivir: A guanido-neuraminic acid that is used to inhibit NEURAMINIDASE.guanidinesantiviral agent;
EC 3.2.1.18 (exo-alpha-sialidase) inhibitor
oseltamiviroseltamivir : A cyclohexenecarboxylate ester that is the ethyl ester of oseltamivir acid. An antiviral prodrug (it is hydrolysed to the active free carboxylic acid in the liver), it is used to slow the spread of influenza.

Oseltamivir: An acetamido cyclohexene that is a structural homolog of SIALIC ACID and inhibits NEURAMINIDASE.
acetamides;
amino acid ester;
cyclohexenecarboxylate ester;
primary amino compound
antiviral drug;
EC 3.2.1.18 (exo-alpha-sialidase) inhibitor;
environmental contaminant;
prodrug;
xenobiotic
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
2-deoxy-2,3-dehydro-n-acetylneuraminic acid2-deoxy-2,3-dehydro-N-acetylneuraminic acid : N-Acetylneuraminic acid reduced across the 2,3-bond with loss of the hydroxy group at C-2; it is a minor component of body fluids although abundant in sialuria.

2-deoxy-2,3-dehydro-N-acetylneuraminic acid: also known as NeuAc2en, but this is also synonym for another compound
N-acetylneuraminic acids
9,10-anthraquinone 2-carboxylic acid9,10-anthraquinone 2-carboxylic acid: structure in first source
5,5'-methylenedisalicylic acid5,5'-methylenedisalicylic acid: inhibits attachment of ribosomes to microsomal membranes; RN given refers to parent cpd; structure in first source & Merck Index, 9th ed, #5934
5-hydroxyflavoneflavones
gallocatechol(-)-epigallocatechin : A flavan-3,3',4',5,5',7-hexol having (2R,3R)-configuration.catechin;
flavan-3,3',4',5,5',7-hexol
antioxidant;
food component;
plant metabolite
6-hydroxyflavone6-hydroxyflavone: antioxidant; structure in first sourcehydroxyflavonoid
(-)-catechin(-)-catechin : The (-)-enantiomer of catechin.catechinmetabolite
sakuranetinsakuranetin : A flavonoid phytoalexin that is (S)-naringenin in which the hydroxy group at position 7 is replaced by a methoxy group.

sakuranetin: major rice phytoalexin; RN given for ((S)-(-))-isomer; structure in first source
(2S)-flavan-4-one;
4'-hydroxyflavanones;
dihydroxyflavanone;
flavonoid phytoalexin;
monomethoxyflavanone
antimycobacterial drug;
plant metabolite
xanthorrhizolxanthorrhizol: structure in first sourcesesquiterpenoid
epicatechin gallate(-)-epicatechin-3-O-gallate : A gallate ester obtained by formal condensation of the carboxy group of gallic acid with the (3R)-hydroxy group of epicatechin. A natural product found in Parapiptadenia rigida.

epicatechin gallate: a steroid 5alpha-reductase inhibitor; RN given refers to the (cis)-isomer; structure given in first source; isolated from green tea
catechin;
gallate ester;
polyphenol
EC 3.2.1.1 (alpha-amylase) inhibitor;
EC 3.2.1.20 (alpha-glucosidase) inhibitor;
metabolite
s-tubercidinylhomocysteine
bcx 18123-hydroxy monocarboxylic acid;
acetamides;
cyclopentanols;
guanidines
antiviral drug;
EC 3.2.1.18 (exo-alpha-sialidase) inhibitor
s-adenosyl-3-thiopropylamineS-adenosyl-3-thiopropylamine : A thioadenosine that is adenosine in which the hydroxy group at C-5' is replaced by a 3-aminopropyl group.

S-adenosyl-3-thiopropylamine: decarboxylated S-adenosylhomocysteine; RN given refers to parent cpd
organic sulfide;
primary amino compound;
thioadenosine
s-adenosylhomocysteineS-adenosyl-L-homocysteine : An organic sulfide that is the S-adenosyl derivative of L-homocysteine.

S-Adenosylhomocysteine: 5'-S-(3-Amino-3-carboxypropyl)-5'-thioadenosine. Formed from S-adenosylmethionine after transmethylation reactions.
adenosines;
amino acid zwitterion;
homocysteine derivative;
homocysteines;
organic sulfide
cofactor;
EC 2.1.1.72 [site-specific DNA-methyltransferase (adenine-specific)] inhibitor;
EC 2.1.1.79 (cyclopropane-fatty-acyl-phospholipid synthase) inhibitor;
epitope;
fundamental metabolite
n-acetylneuraminic acidN-acetylneuraminic acid : An N-acylneuraminic acid where the N-acyl group is specified as acetyl.

N-Acetylneuraminic Acid: An N-acyl derivative of neuraminic acid. N-acetylneuraminic acid occurs in many polysaccharides, glycoproteins, and glycolipids in animals and bacteria. (From Dorland, 28th ed, p1518)
N-acetylneuraminic acidsantioxidant;
bacterial metabolite;
EC 3.2.1.18 (exo-alpha-sialidase) inhibitor;
human metabolite;
mouse metabolite
naringenin(S)-naringenin : The (S)-enantiomer of naringenin.(2S)-flavan-4-one;
naringenin
expectorant;
plant metabolite
nanaomycin ananaomycin A : A pyranonaphthoquinone antibiotic from strain OS-3966 of Streptomyces rosa var. notoensis.

nanaomycin A: produced by a strain OS-3966 of Streptomyces rosa var. notoensis; quinone-related cpd; MF C16-H14-O6; see also nanaomycin B: 52934-85-7, nanaomycin C: 58286-55-8, nanaomycin E: 72660-52-7; structure
benzoisochromanequinone;
monocarboxylic acid;
organooxygen heterocyclic antibiotic;
p-quinones
bacterial metabolite
n-acetylneuraminic acidN-acetyl-beta-neuraminic acid : N-Acetylneuraminic acid with beta configuration at the anomeric centre.N-acetylneuraminic acidepitope
2,5-dideoxy-2,5-imino-d-glucitol2,5-dideoxy-2,5-imino-D-glucitol: structure in first source
4-amino-2-deoxy-2,3-didehydro-n-acetylneuraminic acid
validaminevalidamine : An amino cyclitol consisting of 1D-chiro-inositol lacking the 6-hydroxy group and having those at positions 1 and 5 replaced by amino and hydroxymethyl groups respectively.

validamine: RN given from CA Index Guide; RN not in Chemline 11/84; structure given in first source
amino cyclitol
(+)-usnic acidusnic acid
rg108RG108: DNA methyltransferase inhibitor; structure in first sourceindolyl carboxylic acid
orlistatorlistat : A carboxylic ester resulting from the formal condensation of the carboxy group of N-formyl-L-leucine with the hydroxy group of (3S,4S)-3-hexyl-4-[(2S)-2-hydroxytridecyl]oxetan-2-one. A pancreatic lipase inhibitor, it is used as an anti-obesity drug.

Orlistat: A lactone derivative of LEUCINE that acts as a pancreatic lipase inhibitor to limit the absorption of dietary fat; it is used in the management of obesity.
beta-lactone;
carboxylic ester;
formamides;
L-leucine derivative
anti-obesity agent;
bacterial metabolite;
EC 2.3.1.85 (fatty acid synthase) inhibitor;
EC 3.1.1.3 (triacylglycerol lipase) inhibitor
quercetin7-hydroxyflavonol;
pentahydroxyflavone
antibacterial agent;
antineoplastic agent;
antioxidant;
Aurora kinase inhibitor;
chelator;
EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor;
geroprotector;
phytoestrogen;
plant metabolite;
protein kinase inhibitor;
radical scavenger
acacetin5,7-dihydroxy-4'-methoxyflavone : A monomethoxyflavone that is the 4'-methyl ether derivative of apigenin.dihydroxyflavone;
monomethoxyflavone
anticonvulsant;
plant metabolite
apigeninChamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia.trihydroxyflavoneantineoplastic agent;
metabolite
luteolin3'-hydroxyflavonoid;
tetrahydroxyflavone
angiogenesis inhibitor;
anti-inflammatory agent;
antineoplastic agent;
apoptosis inducer;
c-Jun N-terminal kinase inhibitor;
EC 2.3.1.85 (fatty acid synthase) inhibitor;
immunomodulator;
nephroprotective agent;
plant metabolite;
radical scavenger;
vascular endothelial growth factor receptor antagonist
kaempferol7-hydroxyflavonol;
flavonols;
tetrahydroxyflavone
antibacterial agent;
geroprotector;
human blood serum metabolite;
human urinary metabolite;
human xenobiotic metabolite;
plant metabolite
genistein7-hydroxyisoflavonesantineoplastic agent;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
human urinary metabolite;
phytoestrogen;
plant metabolite;
tyrosine kinase inhibitor
buteinchalcones;
polyphenol
antineoplastic agent;
antioxidant;
EC 1.1.1.21 (aldehyde reductase) inhibitor;
geroprotector;
hypoglycemic agent;
plant metabolite;
radiosensitizing agent;
tyrosine kinase inhibitor
baicaleintrihydroxyflavoneangiogenesis inhibitor;
anti-inflammatory agent;
antibacterial agent;
anticoronaviral agent;
antifungal agent;
antineoplastic agent;
antioxidant;
apoptosis inducer;
EC 1.13.11.31 (arachidonate 12-lipoxygenase) inhibitor;
EC 1.13.11.33 (arachidonate 15-lipoxygenase) inhibitor;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor;
EC 4.1.1.17 (ornithine decarboxylase) inhibitor;
ferroptosis inhibitor;
geroprotector;
hormone antagonist;
plant metabolite;
prostaglandin antagonist;
radical scavenger
chrysinchrysin : A dihydroxyflavone in which the two hydroxy groups are located at positions 5 and 7.7-hydroxyflavonol;
dihydroxyflavone
anti-inflammatory agent;
antineoplastic agent;
antioxidant;
EC 2.7.11.18 (myosin-light-chain kinase) inhibitor;
hepatoprotective agent;
plant metabolite
genkwaningenkwanin : A monomethoxyflavone that is apigenin in which the hydroxy group at position 7 is methylated.

genkwanin: structure
dihydroxyflavone;
monomethoxyflavone
metabolite
myricetin7-hydroxyflavonol;
hexahydroxyflavone
antineoplastic agent;
antioxidant;
cyclooxygenase 1 inhibitor;
food component;
geroprotector;
hypoglycemic agent;
plant metabolite
scutellareinscutellarein : Flavone substituted with hydroxy groups at C-4', -5, -6 and -7.

scutellarein: aglycone of scutellarin from Scutellaria baicalensis; carthamidin is 2S isomer of scutellarein; do not confuse with isoscutellarein and/or isocarthamidin which are respective regioisomers, or with the scutelarin protein
tetrahydroxyflavonemetabolite
tricetintricetin : Flavone hydroxylated at positions 3', 4', 5, 5' and 7.pentahydroxyflavoneantineoplastic agent;
metabolite
7-hydroxyflavone7-hydroxyflavone : A hydroxyflavonoid in which the flavone nucleus is substituted at position 7 by a hydroxy group.hydroxyflavonoid
4',7-dihydroxyflavone4',7-dihydroxyflavone : A dihydroxyflavone in which the two hydroxy substituents are located at positions 4' and 7.

4',7-dihydroxyflavone: inducer of nod gene
dihydroxyflavonemetabolite
5,7,2'-trihydroxyflavone5,7,2'-trihydroxyflavone: has inhibitory effects on the EBV-EA activation & on mouse skin tumor promotion in an in vivo two-stage carcinogenesis test; from Scutellaria baicalensis; structure given in first sourceflavones
shamixanthoneshamixanthone : A pyranoxanthene that is 2,3-dihydropyrano[3,2-a]xanthen-12(1H)-one bearing hydroxy substituents at positions 1 and 11 as well as a prop-1-en-2-yl group at position 2, a methyl substituent at position 5 and a 3,3-dimethylallyl group at position 8. A secondary metabolite produced by Aspergillus nidulans.cyclic ketone;
phenols;
pyranoxanthene
metabolite
sgi-1027SGI-1027: inhibits DNA methyltransferase 1; structure in first source
vulpinic acidvulpinic acid: RN given refers to cpd without isomeric designation; structure given in first source; vulpinic acid refers to (E)-isomerbutenolide
gsk343GSK343 : A member of the class of indazoles that is 1-isopropyl-1H-indazole-4-carboxamide in which the nitrogen of the carboxamide group is substituted by a (6-methyl-2-oxo-4-propyl-1,2-dihydropyridin-3-yl)methyl group and in which the indazole ring is substituted at position 6 by a 2-(4-methylpiperazin-1-yl)pyridin-4-yl group. A highly potent and selective EZH2 inhibitor (IC50 = 4 nM).

GSK343: an EZH2 methyltransferase inhibitor
aminopyridine;
indazoles;
N-alkylpiperazine;
N-arylpiperazine;
pyridone;
secondary carboxamide
antineoplastic agent;
apoptosis inducer;
EC 2.1.1.43 (enhancer of zeste homolog 2) inhibitor
xen445
clozapineclozapine : A benzodiazepine that is 5H-dibenzo[b,e][1,4]diazepine substituted by a chloro group at position 8 and a 4-methylpiperazin-1-yl group at position 11. It is a second generation antipsychotic used in the treatment of psychiatric disorders like schizophrenia.

Clozapine: A tricylic dibenzodiazepine, classified as an atypical antipsychotic agent. It binds several types of central nervous system receptors, and displays a unique pharmacological profile. Clozapine is a serotonin antagonist, with strong binding to 5-HT 2A/2C receptor subtype. It also displays strong affinity to several dopaminergic receptors, but shows only weak antagonism at the dopamine D2 receptor, a receptor commonly thought to modulate neuroleptic activity. Agranulocytosis is a major adverse effect associated with administration of this agent.
benzodiazepine;
N-arylpiperazine;
N-methylpiperazine;
organochlorine compound
adrenergic antagonist;
dopaminergic antagonist;
EC 3.4.21.26 (prolyl oligopeptidase) inhibitor;
environmental contaminant;
GABA antagonist;
histamine antagonist;
muscarinic antagonist;
second generation antipsychotic;
serotonergic antagonist;
xenobiotic