Page last updated: 2024-10-24
chaperone-mediated protein complex assembly
Definition
Target type: biologicalprocess
The aggregation, arrangement and bonding together of a set of components to form a protein complex, mediated by chaperone molecules that do not form part of the finished complex. [GOC:ai]
Chaperone-mediated protein complex assembly is a fundamental biological process that ensures the accurate and efficient formation of multi-protein complexes. These complexes play crucial roles in a wide range of cellular functions, including signal transduction, DNA replication and repair, protein degradation, and cellular metabolism. The process typically involves a series of steps:
1. **Recognition and Binding:** Chaperones, a diverse group of proteins, recognize and bind to unfolded or partially folded polypeptide chains. They do so by recognizing specific amino acid sequences or structural features that are exposed in these states. This binding prevents aggregation and misfolding of the polypeptide chains.
2. **Folding and Assembly:** Once bound to a chaperone, the polypeptide chain is guided through a series of conformational changes to achieve its native, functional structure.
3. **Release and Complex Formation:** Once the polypeptide chain has folded correctly, it is released from the chaperone and interacts with other polypeptide chains or protein complexes to form the desired multi-protein assembly.
Several different chaperone families participate in this process, each with its own specific mechanisms and roles.
**Key Chaperone Families Involved in Protein Complex Assembly:**
* **Hsp70:** These chaperones bind to unfolded or partially folded polypeptide chains and prevent their aggregation. They often work in conjunction with other chaperones to promote protein folding and assembly.
* **Hsp90:** This chaperone plays a crucial role in the folding and maturation of a diverse range of proteins, including signaling proteins and transcription factors.
* **Hsp40:** These chaperones act as co-chaperones to Hsp70 and enhance its ability to bind to unfolded polypeptides.
* **Chaperonins:** These barrel-shaped complexes provide a protected environment for the folding of newly synthesized polypeptides.
**Mechanism of Action:**
Chaperones can promote protein complex assembly through several mechanisms:
* **Scaffolding:** Some chaperones act as scaffolds, bringing together multiple polypeptide chains and promoting their interactions.
* **Folding Modulation:** Chaperones can modulate the folding pathways of individual polypeptide chains, ensuring they adopt the correct conformation for complex formation.
* **Prevention of Aggregation:** Chaperones prevent the aggregation of unfolded or misfolded polypeptides, ensuring they remain available for complex formation.
**Regulation:**
The activity of chaperones is tightly regulated by various cellular signals and stresses. For example, heat shock response induces the expression of chaperones to help cells cope with protein misfolding caused by stress.
**Clinical Significance:**
Disruption of chaperone-mediated protein complex assembly can lead to a wide range of diseases. For instance, mutations in chaperone genes are associated with several neurodegenerative disorders, such as Alzheimer's disease and Parkinson's disease.
**Conclusion:**
Chaperone-mediated protein complex assembly is an essential process for maintaining cellular homeostasis and function. These chaperones play vital roles in ensuring the proper folding and assembly of proteins into functional complexes, ultimately contributing to a wide range of cellular activities.'
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Proteins (6)
| Protein | Definition | Taxonomy |
|---|---|---|
| Lon protease homolog, mitochondrial | A Lon protease, mitochondrial that is encoded in the genome of human. [PRO:DNx, UniProtKB:P36776] | Homo sapiens (human) |
| Complex I intermediate-associated protein 30, mitochondrial | A complex I intermediate-associated protein 30, mitochondrial that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y375] | Homo sapiens (human) |
| 60 kDa heat shock protein, mitochondrial | A 60 kDa heat shock protein, mitochondrial that is encoded in the genome of human. [PRO:DNx, UniProtKB:P10809] | Homo sapiens (human) |
| Heat shock 70 kDa protein 1A | A heat shock 70 kDa protein 1A that is encoded in the genome of human. [PRO:DAN, UniProtKB:P0DMV8] | Homo sapiens (human) |
| Heat shock protein HSP 90-beta | A heat shock protein HSP 90-beta that is encoded in the genome of human. [PRO:DAN] | Homo sapiens (human) |
| Heat shock protein HSP 90-alpha | A heat shock protein HSP 90-alpha that is encoded in the genome of human. [PRO:DAN] | Homo sapiens (human) |
Compounds (139)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| adenine | 6-aminopurines; purine nucleobase | Daphnia magna metabolite; Escherichia coli metabolite; human metabolite; mouse metabolite; Saccharomyces cerevisiae metabolite | |
| 4-nonylphenol | 4-nonylphenol : A member of the class of phenols that is phenol which is para-substituted with a nonyl group. 4-nonylphenol: structure in first source; see also record for nonylphenol | phenols | environmental contaminant |
| albuterol | albuterol : A member of the class of phenylethanolamines that is 4-(2-amino-1-hydroxyethyl)-2-(hydroxymethyl)phenol having a tert-butyl group attached to the nirogen atom. It acts as a beta-adrenergic agonist used in the treatment of asthma and chronic obstructive pulmonary disease (COPD). Albuterol: A short-acting beta-2 adrenergic agonist that is primarily used as a bronchodilator agent to treat ASTHMA. Albuterol is prepared as a racemic mixture of R(-) and S(+) stereoisomers. The stereospecific preparation of R(-) isomer of albuterol is referred to as levalbuterol. | phenols; phenylethanolamines; secondary amino compound | beta-adrenergic agonist; bronchodilator agent; environmental contaminant; xenobiotic |
| aurintricarboxylic acid | aurintricarboxylic acid : A member of the class of quinomethanes that is 3-methylidene-6-oxocyclohexa-1,4-diene-1-carboxylic acid in which the methylidene hydrogens are replaced by 4-carboxy-3-hydroxyphenyl groups. The trisodium salt is the biological stain 'chrome violet CG' while the triammonium salt is 'aluminon'. Aurintricarboxylic Acid: A dye which inhibits protein biosynthesis at the initial stages. The ammonium salt (aluminon) is a reagent for the colorimetric estimation of aluminum in water, foods, and tissues. | monohydroxybenzoic acid; quinomethanes; tricarboxylic acid | fluorochrome; histological dye; insulin-like growth factor receptor 1 antagonist |
| benzbromarone | benzbromarone : 1-Benzofuran substituted at C-2 and C-3 by an ethyl group and a 3,5-dibromo-4-hydroxybenzoyl group respectively. An inhibitor of CYP2C9, it is used as an anti-gout medication. Benzbromarone: Uricosuric that acts by increasing uric acid clearance. It is used in the treatment of gout. | 1-benzofurans; aromatic ketone | uricosuric drug |
| bithionol | bithionol : An aryl sulfide that is diphenyl sulfide in which each phenyl group is substituted at position 2 by hydroxy and at positions 3 and 5 by chlorine. A fungicide and anthelmintic, it was used in various topical drug products for the treatment of liver flukes, but withdrawn after being shown to be a potent photosensitizer with the potential to cause serious skin disorders. Bithionol: Halogenated anti-infective agent that is used against trematode and cestode infestations. | aryl sulfide; bridged diphenyl antifungal drug; bridged diphenyl fungicide; dichlorobenzene; organochlorine pesticide; polyphenol | antifungal agrochemical; antiplatyhelmintic drug |
| candesartan | candesartan : A benzimidazolecarboxylic acid that is 1H-benzimidazole-7-carboxylic acid substituted by an ethoxy group at position 2 and a ({2'-(1H-tetrazol-5-yl)[1,1'-biphenyl]-4-yl}methyl) group at position 1. It is a angiotensin receptor antagonist used for the treatment of hypertension. candesartan: a nonpeptide angiotensin II receptor antagonist | benzimidazolecarboxylic acid; biphenylyltetrazole | angiotensin receptor antagonist; antihypertensive agent; environmental contaminant; xenobiotic |
| eflornithine | eflornithine : A fluoroamino acid that is ornithine substituted by a difluoromethyl group at position 2. Eflornithine: An inhibitor of ORNITHINE DECARBOXYLASE, the rate limiting enzyme of the polyamine biosynthetic pathway. | alpha-amino acid; fluoroamino acid | trypanocidal drug |
| dichlorophen | Dichlorophen: Nontoxic laxative vermicide effective for taenia infestation. It tends to produce colic and nausea. It is also used as a veterinary fungicide, anthelmintic, and antiprotozoan. (From Merck, 11th ed.) | bridged diphenyl fungicide; diarylmethane | |
| n(6),n(6)-dimethyladenine | N(6),N(6)-dimethyladenine : A tertiary amine that is adenine substituted at N-6 by geminal methyl groups. | tertiary amine | |
| ethacrynic acid | etacrynic acid : An aromatic ether that is phenoxyacetic acid in which the phenyl ring is substituted by chlorines at positions 2 and 3, and by a 2-methylidenebutanoyl group at position 4. It is a loop diuretic used to treat high blood pressure resulting from diseases such as congestive heart failure, liver failure, and kidney failure. It is also a glutathione S-transferase (EC 2.5.1.18) inhibitor. Ethacrynic Acid: A compound that inhibits symport of sodium, potassium, and chloride primarily in the ascending limb of Henle, but also in the proximal and distal tubules. This pharmacological action results in excretion of these ions, increased urinary output, and reduction in extracellular fluid. This compound has been classified as a loop or high ceiling diuretic. | aromatic ether; aromatic ketone; dichlorobenzene; monocarboxylic acid | EC 2.5.1.18 (glutathione transferase) inhibitor; ion transport inhibitor; loop diuretic |
| harmalol | harmalol : A harmala alkaloid in which the harman skeleton is hydroxy-substituted at C-7 and has been reduced across the 3,4 bond. harmalol: inhibitor of rat liver microsomal UDP-glucuronyltransferase; RN given refers to parent cpd; structure | harmala alkaloid | algal metabolite; EC 1.4.3.4 (monoamine oxidase) inhibitor |
| hexachlorophene | hexachlorophene : An organochlorine compound that is diphenylmethane in which each of the phenyl groups is substituted by chlorines at positions 2, 3, and 5, and by a hydroxy group at position 6. An antiseptic that is effective against Gram-positive organisms, it is used in soaps and creams for the treatment of various skin disorders. It is also used in agriculture as an acaricide and fungicide, but is not approved for such use within the European Union. Hexachlorophene: A chlorinated bisphenol antiseptic with a bacteriostatic action against Gram-positive organisms, but much less effective against Gram-negative organisms. It is mainly used in soaps and creams and is an ingredient of various preparations used for skin disorders. (From Martindale, The Extra Pharmacopoeia, 30th ed, p797) | bridged diphenyl fungicide; polyphenol; trichlorobenzene | acaricide; antibacterial agent; antifungal agrochemical; antiseptic drug |
| beta-lapachone | beta-lapachone : A benzochromenone that is 3,4-dihydro-2H-benzo[h]chromene-5,6-dione substituted by geminal methyl groups at position 2. Isolated from Tabebuia avellanedae, it exhibits antineoplastic and anti-inflammatory activities. beta-lapachone: antineoplastic inhibitor of reverse transcriptase, DNA topoisomerase, and DNA polymerase | benzochromenone; orthoquinones | anti-inflammatory agent; antineoplastic agent; plant metabolite |
| vitamin k 3 | Vitamin K 3: A synthetic naphthoquinone without the isoprenoid side chain and biological activity, but can be converted to active vitamin K2, menaquinone, after alkylation in vivo. | 1,4-naphthoquinones; vitamin K | angiogenesis inhibitor; antineoplastic agent; EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor; human urinary metabolite; nutraceutical |
| mesalamine | mesalamine : A monohydroxybenzoic acid that is salicylic acid substituted by an amino group at the 5-position. Mesalamine: An anti-inflammatory agent, structurally related to the SALICYLATES, which is active in INFLAMMATORY BOWEL DISEASE. It is considered to be the active moiety of SULPHASALAZINE. (From Martindale, The Extra Pharmacopoeia, 30th ed) | amino acid; aromatic amine; monocarboxylic acid; monohydroxybenzoic acid; phenols | non-steroidal anti-inflammatory drug |
| ns 1619 | NS 1619 : A member of the class of benzimidazoles that is 1,3-dihydro-2H-benzimidazol-2-one in which the hydrogens at positions 1 and 5 are replaced are replaced by 2-hydroxy-5-(trifluoromethyl)phenyl and trifluoromethyl groups, respectively. It is an opener/activator of the large-conductance calcium-activated potassium channel (Bkca). NS 1619: structure given in first source | (trifluoromethyl)benzenes; benzimidazoles; phenols | potassium channel opener |
| pentamidine | pentamidine : A diether consisting of pentane-1,5-diol in which both hydroxyl hydrogens have been replaced by 4-amidinophenyl groups. A trypanocidal drug that is used for treatment of cutaneous leishmaniasis and Chagas disease. Pentamidine: Antiprotozoal agent effective in trypanosomiasis, leishmaniasis, and some fungal infections; used in treatment of PNEUMOCYSTIS pneumonia in HIV-infected patients. It may cause diabetes mellitus, central nervous system damage, and other toxic effects. | aromatic ether; carboxamidine; diether | anti-inflammatory agent; antifungal agent; calmodulin antagonist; chemokine receptor 5 antagonist; EC 2.3.1.48 (histone acetyltransferase) inhibitor; NMDA receptor antagonist; S100 calcium-binding protein B inhibitor; trypanocidal drug; xenobiotic |
| primaquine | primaquine : An N-substituted diamine that is pentane-1,4-diamine substituted by a 6-methoxyquinolin-8-yl group at the N(4) position. It is a drug used in the treatment of malaria and Pneumocystis pneumonia. Primaquine: An aminoquinoline that is given by mouth to produce a radical cure and prevent relapse of vivax and ovale malarias following treatment with a blood schizontocide. It has also been used to prevent transmission of falciparum malaria by those returning to areas where there is a potential for re-introduction of malaria. Adverse effects include anemias and GI disturbances. (From Martindale, The Extra Pharmacopeia, 30th ed, p404) | aminoquinoline; aromatic ether; N-substituted diamine | antimalarial |
| protoporphyrin ix | protoporphyrin : A cyclic tetrapyrrole that consists of porphyrin bearing four methyl substituents at positions 3, 8, 13 and 17, two vinyl substituents at positions 7 and 12 and two 2-carboxyethyl substituents at positions 2 and 18. The parent of the class of protoporphyrins. protoporphyrin IX: RN given refers to parent cpd; structure in Merck Index, 9th ed, #7685 | ||
| vorinostat | vorinostat : A dicarboxylic acid diamide comprising suberic (octanedioic) acid coupled to aniline and hydroxylamine. A histone deacetylase inhibitor, it is marketed under the name Zolinza for the treatment of cutaneous T cell lymphoma (CTCL). Vorinostat: A hydroxamic acid and anilide derivative that acts as a HISTONE DEACETYLASE inhibitor. It is used in the treatment of CUTANEOUS T-CELL LYMPHOMA and SEZARY SYNDROME. | dicarboxylic acid diamide; hydroxamic acid | antineoplastic agent; apoptosis inducer; EC 3.5.1.98 (histone deacetylase) inhibitor |
| cetrimonium bromide | cetyltrimethylammonium bromide : The organic bromide salt that is the bromide salt of cetyltrimethylammonium; one of the components of the topical antiseptic cetrimide. | organic bromide salt; quaternary ammonium salt | detergent; surfactant |
| adenosine diphosphate | Adenosine Diphosphate: Adenosine 5'-(trihydrogen diphosphate). An adenine nucleotide containing two phosphate groups esterified to the sugar moiety at the 5'-position. | adenosine 5'-phosphate; purine ribonucleoside 5'-diphosphate | fundamental metabolite; human metabolite |
| ampicillin | ampicillin : A penicillin in which the substituent at position 6 of the penam ring is a 2-amino-2-phenylacetamido group. Ampicillin: Semi-synthetic derivative of penicillin that functions as an orally active broad-spectrum antibiotic. | beta-lactam antibiotic; penicillin; penicillin allergen | antibacterial drug |
| purpurin | purpurin : A trihydroxyanthraquinone derived from anthracene by substitution with oxo groups at C-9 and C-10 and with hydroxy groups at C-1, C-2 and C-4. purpurin: from Rubiaceae plants; structure in first source | trihydroxyanthraquinone | biological pigment; histological dye; plant metabolite |
| salicylanilide | salicylanilide : An amide of salicylic acid and of aniline; it is therefore both a salicylamide and an anilide. salicylanilide: RN given refers to parent cpd | benzanilide fungicide; salicylamides; salicylanilides | |
| anthranilamide | substituted aniline | ||
| benzanilide | |||
| 2-aminopyrimidine | aminopyrimidine : A member of the class of pyrimidines that is pyrimidine substituted by at least one amino group and its derivatives. pyrimidin-2-amine : An aminopyrimidine carrying an amino group at position 2. | aminopyrimidine | |
| benzethonium chloride | benzethonium chloride : A (synthetic) quaternary ammonium salt that is benzyldimethylamine in which the nitrogen is quaternised by a 2-{2-[p-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy}ethyl group, with chloride as the counter-ion. An antiseptic and disinfectant, it is active against a broad spectrum of bacteria, fungi, moulds and viruses. | aromatic ether; chloride salt; quaternary ammonium salt | antibacterial agent; antifungal agent; antiseptic drug; antiviral agent; disinfectant |
| 2-chloroadenosine | 5-chloroformycin A: structure given in first source | purine nucleoside | |
| indazoles | Indazoles: A group of heterocyclic aromatic organic compounds consisting of the fusion of BENZENE and PYRAZOLES. | indazole | |
| ethamivan | etamivan : Phenol substituted at C-2 and C-4 by a methoxy group and an N,N-diethylaminocarbonyl group respectively. A respiratory stimulant drug related to nikethamide, it has now fallen largely into disuse. ethamivan: minor descriptor (65-72); major descriptor (73-86); on-line search BENZAMIDES (66-86); INDEX MEDICUS search BENZAMIDES (65-72); ETHAMIVAN (73-86) | methoxybenzenes; phenols | |
| evans blue | Evans blue : An organic sodium salt that is the tetrasodium salt of 6,6'-{(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis[diazene-2,1-diyl]}bis(4-amino-5-hydroxynaphthalene-1,3-disulfonate). It is sometimes used as a counterstain, especially in fluorescent methods to suppress background autofluorescence. Evans Blue: An azo dye used in blood volume and cardiac output measurement by the dye dilution method. It is very soluble, strongly bound to plasma albumin, and disappears very slowly. | organic sodium salt | fluorochrome; histological dye; sodium channel blocker; teratogenic agent |
| lithocholic acid | lithocholate : A bile acid anion that is the conjugate base of lithocholic acid. lithocholic acid : A monohydroxy-5beta-cholanic acid with a alpha-hydroxy substituent at position 3. It is a bile acid obtained from chenodeoxycholic acid by bacterial action. Lithocholic Acid: A bile acid formed from chenodeoxycholate by bacterial action, usually conjugated with glycine or taurine. It acts as a detergent to solubilize fats for absorption and is itself absorbed. It is used as cholagogue and choleretic. | bile acid; C24-steroid; monohydroxy-5beta-cholanic acid | geroprotector; human metabolite; mouse metabolite |
| plumbagin | plumbagin : 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 |
| 9-fluorenone | fluoren-9-one : The simplest member of the class fluoren-9-ones that is 9H-fluorene bearing an oxo substituent at position 9. | fluoren-9-ones | fungal xenobiotic metabolite |
| alpha-aminopyridine | alpha-aminopyridine: RN given refers to parent cpd; structure in Merck Index, 9th ed, #485 aminopyridine : Compounds containing a pyridine skeleton substituted by one or more amine groups. | ||
| gentian violet | crystal violet : An organic chloride salt that is the monochloride salt of crystal violet cation. It has been used in creams for the topical treatment of bacterial and fungal infections, being effective against some Gram-positive bacteria (notably Staphylococcus species) and some pathogenic fungi (including Candida species) but use declined following reports of animal carcinogenicity. It has also been used for dying wood, silk, and paper, as well as a histological stain. Gentian Violet: A dye that is a mixture of violet rosanilinis with antibacterial, antifungal, and anthelmintic properties. | organic chloride salt | anthelminthic drug; antibacterial agent; antifungal agent; antiseptic drug; histological dye |
| erythromycin | erythromycin : Any of several wide-spectrum macrolide antibiotics obtained from actinomycete Saccharopolyspora erythraea (formerly known as Streptomyces erythraeus). erythromycin A : An erythromycin that consists of erythronolide A having 2,6-dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl and 3,4,6-trideoxy-3-(dimethylamino)-beta-D-xylo-hexopyranosyl residues attahced at positions 4 and 6 respectively. Erythromycin: A bacteriostatic antibiotic macrolide produced by Streptomyces erythreus. Erythromycin A is considered its major active component. In sensitive organisms, it inhibits protein synthesis by binding to 50S ribosomal subunits. This binding process inhibits peptidyl transferase activity and interferes with translocation of amino acids during translation and assembly of proteins. | cyclic ketone; erythromycin | |
| agaric acid | agaric acid: adenine nucleotide translocase antagonist | ||
| ethidium bromide | organic bromide salt | geroprotector; intercalator; trypanocidal drug | |
| vancomycin | vancomycin : A complex glycopeptide from Streptomyces orientalis. It inhibits a specific step in the synthesis of the peptidoglycan layer in the Gram-positive bacteria Staphylococcus aureus and Clostridium difficile. Vancomycin: Antibacterial obtained from Streptomyces orientalis. It is a glycopeptide related to RISTOCETIN that inhibits bacterial cell wall assembly and is toxic to kidneys and the inner ear. | glycopeptide | antibacterial drug; antimicrobial agent; bacterial metabolite |
| cetylpyridinium chloride | hydrate | ||
| rafoxanide | Rafoxanide: Veterinary anthelmintic for grazing animals; used to treat fluke, hookworm and other infestations. | ||
| silybin | silibinin : A flavonolignan isolated from milk thistle, Silybum marianum, that has been shown to exhibit antioxidant and antineoplastic activities. | aromatic ether; benzodioxine; flavonolignan; polyphenol; secondary alpha-hydroxy ketone | antineoplastic agent; antioxidant; hepatoprotective agent; plant metabolite |
| paclitaxel | Taxus: Genus of coniferous yew trees or shrubs, several species of which have medicinal uses. Notable is the Pacific yew, Taxus brevifolia, which is used to make the anti-neoplastic drug taxol (PACLITAXEL). | taxane diterpenoid; tetracyclic diterpenoid | antineoplastic agent; human metabolite; metabolite; microtubule-stabilising agent |
| closantel | closantel : A racemate comprising equimolar amounts of (R)- and (S)-clostanel. An anthelmintic, it is used (as the dihydrate of the sodium salt) in veterinary medicine for the treatment of fluke and nematode infections. closantel: structure N-{5-chloro-4-[(4-chlorophenyl)(cyano)methyl]-2-methylphenyl}-2-hydroxy-3,5-diiodobenzamide : An aromatic amide resulting from the formal condensation of the carboxy group of 3,5-diiodosalicylic acid with the amino group of aniline substituted at positions 2, 4, and 5 by methyl, (4-chlorophenyl)(cyano)methyl, and methyl groups respectively. | aromatic amide; monocarboxylic acid amide; monochlorobenzenes; nitrile; organoiodine compound; phenols | |
| adapalene | adapalene : A naphthoic acid that is CD437 in which the phenolic hydroxy group has been converted to its methyl ether. Adapalene: A naphthalene derivative that has specificity for RETINOIC ACID RECEPTORS. It is used as a DERMATOLOGIC AGENT for the treatment of ACNE. | adamantanes; monocarboxylic acid; naphthoic acid | dermatologic drug; EC 2.7.11.22 (cyclin-dependent kinase) inhibitor; non-steroidal anti-inflammatory drug |
| adenosine | quinquefolan B: isolated from roots of Panax quinquefolium L.; RN not in Chemline 10/87; RN from Toxlit | adenosines; purines D-ribonucleoside | analgesic; anti-arrhythmia drug; fundamental metabolite; human metabolite; vasodilator agent |
| 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 |
| 4-aminopyrimidine | aminopyrimidine | ||
| 2-acetylamino-3-chloro-1,4-naphthoquinone | 2-acetylamino-3-chloro-1,4-naphthoquinone: structure in first source | ||
| 2-aminopyrazine | pyrazines | ||
| catalposide | |||
| 8-aminoadenosine | |||
| adenosine-5'-carboxylic acid | purine nucleoside | ||
| hydroxybenzindazole | hydroxybenzindazole: structure | ||
| adenosine 5'-carboxamide | adenosine 5'-carboxamide: structure | ||
| 5-benzyloxytryptophan | |||
| isopentaquine | |||
| 5'-n-methylcarboxamideadenosine | 5'-N-methylcarboxamideadenosine: RN given refers to (beta-D)-isomer | ||
| n-methyladenosine | N-methyladenosine: is a inhibitor of cell differentiation N(6)-methyladenosine : A methyladenosine compound with one methyl group attached to N(6) of the adenine nucleobase. | methyladenosine | |
| deguelin | deguelin : A rotenone that is 13,13a-dihydro-3H-chromeno[3,4-b]pyrano[2,3-h]chromen-7(7aH)-one substituted by methoxy groups at positions 9 and 10, and by two methyl groups at position 3 (the 7aS,13aS-stereoisomer). It exists in abundant quantities in the bark, roots, and leaves of the Leguminosae family of plants and reported to exert anti-tumour effects in various cancers. deguelin: a natural product from Mundulea sericea; RN refers to (7aS-cis)-isomer; structure given in first source | aromatic ether; diether; organic heteropentacyclic compound; rotenones | angiogenesis inhibitor; anti-inflammatory agent; antineoplastic agent; antiviral agent; apoptosis inducer; EC 2.7.11.1 (non-specific serine/threonine protein kinase) inhibitor; mitochondrial NADH:ubiquinone reductase inhibitor; plant metabolite |
| Zearalanone | macrolide; resorcinols | ||
| sb 204070a | SB 204070A: structure given in first source; a selective 5-HT(4) receptor antagonist | ||
| 2-(4-morpholinyl)-4h-1-benzopyran-4-one | 2-(4-morpholinyl)-4H-1-benzopyran-4-one: an aminochromone; exhibits both antiproliferative and antichemotactic activity in vitro | ||
| (-)-gallocatechin gallate | (-)-gallocatechin gallate : A gallate ester obtained by formal condensation of the carboxy group of gallic acid with the (3R)-hydroxy group of (-)-gallocatechin. A natural product found in found in green tea. | catechin; gallate ester; polyphenol | antineoplastic agent; EC 3.4.22.69 (SARS coronavirus main proteinase) inhibitor; human xenobiotic metabolite; plant metabolite |
| gossypol acetic acid | |||
| bortezomib | amino acid amide; L-phenylalanine derivative; pyrazines | antineoplastic agent; antiprotozoal drug; protease inhibitor; proteasome inhibitor | |
| adenosine 5'-phosphoramidate | adenosine 5'-phosphoramidate : The phosphoramadite analogue of AMP. | organic phosphoramidate | Mycoplasma genitalium metabolite |
| tretinoin | all-trans-retinoic acid : A retinoic acid in which all four exocyclic double bonds have E- (trans-) geometry. retinoic acid : A retinoid consisting of 3,7-dimethylnona-2,4,6,8-tetraenoic acid substituted at position 9 by a 2,6,6-trimethylcyclohex-1-en-1-yl group (geometry of the four exocyclic double bonds is not specified). Tretinoin: An important regulator of GENE EXPRESSION during growth and development, and in NEOPLASMS. Tretinoin, also known as retinoic acid and derived from maternal VITAMIN A, is essential for normal GROWTH; and EMBRYONIC DEVELOPMENT. An excess of tretinoin can be teratogenic. It is used in the treatment of PSORIASIS; ACNE VULGARIS; and several other SKIN DISEASES. It has also been approved for use in promyelocytic leukemia (LEUKEMIA, PROMYELOCYTIC, ACUTE). | retinoic acid; vitamin A | anti-inflammatory agent; antineoplastic agent; antioxidant; AP-1 antagonist; human metabolite; keratolytic drug; retinoic acid receptor agonist; retinoid X receptor agonist; signalling molecule |
| arachidonic acid | arachidonate : A long-chain fatty acid anion resulting from the removal of a proton from the carboxy group of arachidonic acid. icosa-5,8,11,14-tetraenoic acid : Any icosatetraenoic acid with the double bonds at positions 5, 8, 11 and 14. | icosa-5,8,11,14-tetraenoic acid; long-chain fatty acid; omega-6 fatty acid | Daphnia galeata metabolite; EC 3.1.1.1 (carboxylesterase) inhibitor; human metabolite; mouse metabolite |
| adenosine-5'-(n-ethylcarboxamide) | Adenosine-5'-(N-ethylcarboxamide): A stable adenosine A1 and A2 receptor agonist. Experimentally, it inhibits cAMP and cGMP phosphodiesterase activity. N-ethyl-5'-carboxamidoadenosine : A derivative of adenosine in which the 5'-hydroxymethyl group is replaced by an N-ethylcarboxamido group. | adenosines; monocarboxylic acid amide | adenosine A1 receptor agonist; adenosine A2A receptor agonist; antineoplastic agent; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; vasodilator agent |
| 8-(2-chloro-3,4,5-trimethoxybenzyl)-2-fluoro-9-pent-4-yn-1-yl-9H-purin-6-amine | 8-(2-chloro-3,4,5-trimethoxybenzyl)-2-fluoro-9-pent-4-yn-1-yl-9H-purin-6-amine : A member of the class of 6-aminopurines that is 2-fluoroadenine carrying additional 2-chloro-3,4,5-trimethoxybenzyl and pent-4-yn-1-yl substituents at positions 8 and 9 respectively. | 6-aminopurines; acetylenic compound; methoxybenzenes; monochlorobenzenes; organofluorine compound | antineoplastic agent; Hsp90 inhibitor |
| 1,3,6-trimethylpyrimido[5,4-e][1,2,4]triazine-5,7-dione | pyrimidotriazine | ||
| riboflavin | vitamin B2 : Any member of a group of vitamers that belong to the chemical structural class called flavins that exhibit biological activity against vitamin B2 deficiency. Symptoms associated with vitamin B2 deficiency include glossitis, seborrhea, angular stomaitis, cheilosis and photophobia. The vitamers include riboflavin and its phosphate derivatives (and includes their salt, ionised and hydrate forms). | flavin; vitamin B2 | anti-inflammatory agent; antioxidant; cofactor; Escherichia coli metabolite; food colouring; fundamental metabolite; human urinary metabolite; mouse metabolite; photosensitizing agent; plant metabolite |
| 4'-methoxychalcone | 4'-methoxychalcone: RN given refers to compound with no isomeric designation | chalcones | |
| 4-chloro-3-nitro-1-(phenylmethyl)-2-quinolinone | quinolines | ||
| curcumin | curcumin : 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 |
| cct018159 | CCT-018159 : A member of the class of pyrazoles that is 1H-pyrazole carrying 1,4-benzodioxane-6-yl and 5-ethyl-2,4-dihydroxyphenyl substituents at positions 4 and 5 respectively. CCT018159: structure in first source | benzodioxine; pyrazoles; resorcinols | antineoplastic agent; apoptosis inducer; Hsp90 inhibitor |
| aurapten | aurapten: RN refers to (E)-isomer; structure given in first source auraptene : A member of the class of coumarins that is umbelliferone in which the phenolic hydrogen has been replaced by a geranyl group. Ii is isolated from several edible fruits and vegetables and exhibits a variety of therapeutic properties. | coumarins; monoterpenoid | antihypertensive agent; antineoplastic agent; antioxidant; apoptosis inducer; dopaminergic agent; EC 2.7.11.24 (mitogen-activated protein kinase) inhibitor; gamma-secretase modulator; gastrointestinal drug; hepatoprotective agent; matrix metalloproteinase inhibitor; neuroprotective agent; plant metabolite; PPARalpha agonist; vulnerary |
| adenosine-5'-(N-propyl)carboxamide | adenosine-5'-(N-propyl)carboxamide : A monocarboxylic acid amide that is the propyl amide of adenosine 5'-carboxylic acid. | adenosines; monocarboxylic acid amide | |
| 1,6-dimethyl-3-propylpyrimido[5,4-e][1,2,4]triazine-5,7-dione | pyrimidotriazine | ||
| ver-49009 | 5-(5-chloro-2,4-dihydroxyphenyl)-N-ethyl-4-(4-methoxyphenyl)pyrazole-3-carboxamide : An aromatic amide obtained by formal condensation of the carboxy group of 5-(5-chloro-2,4-dihydroxyphenyl)-4-(4-methoxyphenyl)pyrazole-3-carboxylic acid with the amino group of ethylamine. VER-49009: inhibits heat shock protein 90 molecular chaperone; structure in first source | aromatic amide; monochlorobenzenes; monomethoxybenzene; pyrazoles; resorcinols | Hsp90 inhibitor |
| gossypetin | gossypetin : A hexahydroxyflavone having the hydroxy groups placed at the 3-, 3'-, 4'-, 5- 7- and 8-positions. gossypetin: inhibits activity of penicillinase enzyme in E coli | 7-hydroxyflavonol; hexahydroxyflavone | plant metabolite |
| vitamin d 2 | Ergocalciferols: Derivatives of ERGOSTEROL formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. They differ from CHOLECALCIFEROL in having a double bond between C22 and C23 and a methyl group at C24. vitamin D2 : A vitamin D supplement and has been isolated from alfalfa. | hydroxy seco-steroid; seco-ergostane; vitamin D | bone density conservation agent; nutraceutical; plant metabolite; rodenticide |
| cholecalciferol | calciol : A hydroxy seco-steroid that is (5Z,7E)-9,10-secocholesta-5,7,10(19)-triene in which the pro-S hydrogen at position 3 has been replaced by a hydroxy group. It is the inactive form of vitamin D3, being hydroxylated in the liver to calcidiol (25-hydroxyvitamin D3), which is then further hydroxylated in the kidney to give calcitriol (1,25-dihydroxyvitamin D3), the active hormone. Cholecalciferol: Derivative of 7-dehydroxycholesterol formed by ULTRAVIOLET RAYS breaking of the C9-C10 bond. It differs from ERGOCALCIFEROL in having a single bond between C22 and C23 and lacking a methyl group at C24. | D3 vitamins; hydroxy seco-steroid; seco-cholestane; secondary alcohol; steroid hormone | geroprotector; human metabolite |
| morin | morin : A pentahydroxyflavone that is 7-hydroxyflavonol bearing three additional hydroxy substituents at positions 2' 4' and 5. morin: a light yellowish pigment found in the wood of old fustic (Chlorophora tinctoria) | 7-hydroxyflavonol; pentahydroxyflavone | angiogenesis modulating agent; anti-inflammatory agent; antibacterial agent; antihypertensive agent; antineoplastic agent; antioxidant; EC 5.99.1.2 (DNA topoisomerase) inhibitor; hepatoprotective agent; metabolite; neuroprotective agent |
| myricetin | 7-hydroxyflavonol; hexahydroxyflavone | antineoplastic agent; antioxidant; cyclooxygenase 1 inhibitor; food component; geroprotector; hypoglycemic agent; plant metabolite | |
| 4-hydroxychalcone | 4-hydroxychalcone : A member of the class of chalcones that is trans-chalcone substituted by a hydroxy group at position 4. 4-hydroxychalcone: structure in first source | chalcones; phenols | antihypertensive agent; plant metabolite |
| 4'-hydroxychalcone | 4'-hydroxychalcone : A member of the class of chalcones that is trans-chalcone substituted by a hydroxy group at position 4'. 4'-hydroxychalcone: inhibits TNFalpha-induced NF-κB activation; structure in first source | chalcones; phenols | anti-inflammatory agent; antineoplastic agent |
| phenoxybenzamine hydrochloride | organic molecular entity | ||
| geldanamycin | 1,4-benzoquinones; ansamycin; carbamate ester; organic heterobicyclic compound | antimicrobial agent; antineoplastic agent; antiviral agent; cysteine protease inhibitor; Hsp90 inhibitor | |
| 17-(dimethylaminoethylamino)-17-demethoxygeldanamycin | 17-(dimethylaminoethylamino)-17-demethoxygeldanamycin: structure in first source alvespimycin : A 19-membered macrocyle that is geldanamycin in which the methoxy group attached to the benzoquinone moiety has been replaced by a 2-(N,N-dimethylamino)ethylamino group. | 1,4-benzoquinones; ansamycin; carbamate ester; secondary amino compound; tertiary amino compound | Hsp90 inhibitor |
| nalbuphine | Nalbuphine: A narcotic used as a pain medication. It appears to be an agonist at KAPPA RECEPTORS and an antagonist or partial agonist at MU RECEPTORS. | organic heteropentacyclic compound | mu-opioid receptor antagonist; opioid analgesic |
| derrubone | derrubone: an inhibitor of the Hsp90 protein folding machinery from Derris robusta; structure in first source | isoflavanones | |
| 22,23-dihydroavermectin b(1)a | 22,23-dihydroavermectin B(1)a: C48H74O14; major component of IVERMECTIN; MW 875.093; structure given in first source 22,23-dihydroavermectin B1a : A macrocyclic lactone that is avermectin B1a in which the double bond present in the spirocyclic ring system has been reduced to a single bond. It is the major component of ivermectin. | macrocyclic lactone; spiroketal | |
| monorden | monorden: inhibits HSP90 Heat-Shock Proteins, DNA topoisomerase VI and human Topoisomerase II | cyclic ketone; enone; epoxide; macrolide antibiotic; monochlorobenzenes; phenols | antifungal agent; metabolite; tyrosine kinase inhibitor |
| avermectin b(1)a | avermectin B(1)a: RN given refers to avermectin B(1)a; see also avermectins & demethylavermectins | avermectin | |
| marmin | marmin: structure in first source; RN given for (R-(E))-isomer | ||
| tanespimycin | CP 127374: analog of herbimycin A | 1,4-benzoquinones; ansamycin; carbamate ester; organic heterobicyclic compound; secondary amino compound | antineoplastic agent; apoptosis inducer; Hsp90 inhibitor |
| nifurtimox | Nifurtimox: A nitrofuran thiazine that has been used against TRYPANOSOMIASIS. | nitrofuran antibiotic | |
| vildagliptin | amino acid amide | ||
| 1-aminoadenosine | 1-aminoadenosine: structure | ||
| 9h-purine-9-propanamine, 6-amino-8-((6-iodo-1,3-benzodioxol-5-yl)thio)-n-(1-methylethyl)- | 9H-purine-9-propanamine, 6-amino-8-((6-iodo-1,3-benzodioxol-5-yl)thio)-N-(1-methylethyl)-: an epichaperome (purine-scaffold) inhibitor; structure in first source | ||
| nvp-dpp728 | |||
| reblastatin | reblastatin: structure in first source | ||
| 5'-amino-5'-deoxyadenosine | |||
| cycloproparadicicol | cycloproparadicicol: structure in first source | ||
| gambogic acid | gambogic acid: RN given refers to (1R-(1alpha,1(Z),3abeta,5alpha,11beta,14aS*))-isomer | pyranoxanthones | metabolite |
| ipi 493 | 17-aminogeldanamycin: structure in first source | ||
| n-cyclopropyl adenosine-5'-carboxamide | |||
| pochonin d | pochonin D: secondary metabolite of Pochonia chlamydosporia; structure in first source | ||
| ec 144 | EC 144: structure in first source | ||
| snx-7081 | SNX-7081: Anti-Inflammatory Agent; structure in first source | ||
| 6-o-coumaroylcatalpol | cinnamate ester | ||
| at 13387 | (2,4-dihydroxy-5-isopropylphenyl)-(5-(4-methylpiperazin-1-ylmethyl)-1,3-dihydroisoindol-2-yl)methanone: structure in first source onalespib : A member of the class of isoindoles that is isoindole in which the amino group has been acylated by a 2,4-dihydroxy-5-isopropylbenzoyl group and in which position 5 of the isoidole moiety has been substituted by a (4-methylpiperazin-1-yl)methyl group. A second-generation Hsp90 inhibitor. | benzamides; isoindoles; N-alkylpiperazine; resorcinols; tertiary carboxamide | antineoplastic agent; Hsp90 inhibitor |
| erythrosine | erythrosin B : An organic sodium salt that is the disodium salt of 2-(2,4,5,7-tetraiodo-6-oxido-3-oxo-8a,10a-dihydroxanthen-9-yl)benzoic acid. Erythrosine: A tetraiodofluorescein used as a red coloring in some foods (cherries, fish), as a disclosure of DENTAL PLAQUE, and as a stain of some cell types. It has structural similarity to THYROXINE. | ||
| tannins | gallotannin : A class of hydrolysable tannins obtained by condensation of the carboxy group of gallic acid (and its polymeric derivatives) with the hydroxy groups of a monosaccharide (most commonly glucose). | tannin | |
| ly-146032 | heterodetic cyclic peptide; lipopeptide; lipopeptide antibiotic; macrocycle; macrolide | antibacterial drug; bacterial metabolite; calcium-dependent antibiotics | |
| cnf 2024 | 2-aminopurines; aromatic ether; organochlorine compound; pyridines | antineoplastic agent; Hsp90 inhibitor | |
| snx 2112 | SNX 2112: an orally available small molecule Hsp90 inhibitor; structure in first source | ||
| ver 155008 | VER 155008: structure in first source | purine nucleoside | |
| nvp-bep800 | |||
| debio 0932 | CUDC 305: an Hsp90 inhibitor with antineoplastic activity; structure in first source | ||
| pf 04929113 | |||
| ch5164840 | CH5164840: biotin-labeled version of 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG) | ||
| novobiocin | novobiocin : A coumarin-derived antibiotic obtained from Streptomyces niveus. Novobiocin: An antibiotic compound derived from Streptomyces niveus. It has a chemical structure similar to coumarin. Novobiocin binds to DNA gyrase, and blocks adenosine triphosphatase (ATPase) activity. (From Reynolds, Martindale The Extra Pharmacopoeia, 30th ed, p189) | carbamate ester; ether; hexoside; hydroxycoumarin; monocarboxylic acid amide; monosaccharide derivative; phenols | antibacterial agent; antimicrobial agent; EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor; Escherichia coli metabolite; hepatoprotective agent |
| 6-o-palmitoylascorbic acid | fatty acid ester | ||
| tas-116 | |||
| 2-(3,4-dimethoxyphenyl)-1-(5-methoxy-2,2-dimethyl-2h-chromen-6-yl)ethanone | 2-(3,4-dimethoxyphenyl)-1-(5-methoxy-2,2-dimethyl-2H-chromen-6-yl)ethanone: an Hsp90 inhibitor; structure in first source | ||
| ver-246608 | VER-246608: inhibits pyruvate dehydrogenase kinase; structure in first source | ||
| rifampin | Rifampin: A semisynthetic antibiotic produced from Streptomyces mediterranei. It has a broad antibacterial spectrum, including activity against several forms of Mycobacterium. In susceptible organisms it inhibits DNA-dependent RNA polymerase activity by forming a stable complex with the enzyme. It thus suppresses the initiation of RNA synthesis. Rifampin is bactericidal, and acts on both intracellular and extracellular organisms. (From Gilman et al., Goodman and Gilman's The Pharmacological Basis of Therapeutics, 9th ed, p1160) | cyclic ketal; hydrazone; N-iminopiperazine; N-methylpiperazine; rifamycins; semisynthetic derivative; zwitterion | angiogenesis inhibitor; antiamoebic agent; antineoplastic agent; antitubercular agent; DNA synthesis inhibitor; EC 2.7.7.6 (RNA polymerase) inhibitor; Escherichia coli metabolite; geroprotector; leprostatic drug; neuroprotective agent; pregnane X receptor agonist; protein synthesis inhibitor |
| hematein | hematein : An organic heterotetracyclic compound that is -6a,7-dihydrobenzo[b]indeno[1,2-d]pyran-9-one carrying four hydroxy substituents at positions 3, 4, 6a and 10. hematein: structure | ||
| ver-50589 | VER-50589: inhibits heat shock protein 90 molecular chaperone; structure in first source | ||
| ver 52296 | luminespib : A monocarboxylic acid amide obtained by formal condensation of the carboxy group of 5-(2,4-dihydroxy-5-isopropylphenyl)-4-[4-(morpholin-4-ylmethyl)phenyl]-1,2-oxazole-3-carboxylic acid with the amino group of ethylamine. | aromatic amide; isoxazoles; monocarboxylic acid amide; morpholines; resorcinols | angiogenesis inhibitor; antineoplastic agent; Hsp90 inhibitor |
| sta 9090 | ring assembly; triazoles | ||
| nms-e973 | NMS-E973: structure in first source |