Page last updated: 2024-10-24

MHC class II protein complex binding

Definition

Target type: molecularfunction

Binding to a class II major histocompatibility complex. [GOC:mtg_signal, GOC:vw]

MHC class II protein complexes are integral to the adaptive immune response, specifically in presenting processed antigens to CD4+ T cells. The molecular function of this binding involves a series of intricate steps: 1. **Antigen Processing:** Antigen-presenting cells (APCs) like dendritic cells, macrophages, and B cells internalize exogenous antigens through phagocytosis, endocytosis, or macropinocytosis. These antigens are then processed within endosomes, where they are degraded into peptide fragments by proteases. 2. **Loading of Peptides onto MHC II:** Within endosomes, MHC class II molecules associate with invariant chain (Ii) to prevent premature binding to peptides in the ER. Ii acts as a chaperone, directing MHC II to the endocytic pathway. Upon arrival in the endosome, Ii is progressively degraded, leaving a small fragment called CLIP (class II-associated invariant chain peptide) bound to the MHC II molecule. 3. **Exchange of CLIP for Antigenic Peptides:** The HLA-DM molecule, a chaperone specific to MHC II, facilitates the exchange of CLIP with peptides derived from processed antigens. HLA-DM promotes the dissociation of CLIP and stabilizes the binding of high-affinity antigenic peptides to MHC II. 4. **Surface Expression and Presentation:** Once loaded with antigenic peptides, MHC II molecules are transported to the cell surface. 5. **T Cell Recognition:** CD4+ T cells express TCRs (T cell receptors) that specifically recognize the complex formed between MHC II and the bound antigenic peptide. This recognition activates the T cell, initiating an immune response. In summary, the molecular function of MHC class II protein complex binding involves the processing of exogenous antigens, loading of peptides onto MHC II molecules, and presentation of these peptide-MHC II complexes on the cell surface for recognition by CD4+ T cells, thereby triggering adaptive immune responses.'
"

Proteins (7)

ProteinDefinitionTaxonomy
Pyruvate kinase PKMA pyruvate kinase PKM that is encoded in the genome of human. [PRO:DNx, UniProtKB:P14618]Homo sapiens (human)
Heat shock cognate 71 kDa proteinA heat shock cognate 71 kDa protein that is encoded in the genome of human. [PRO:DAN]Homo sapiens (human)
Heat shock protein HSP 90-betaA heat shock protein HSP 90-beta that is encoded in the genome of human. [PRO:DAN]Homo sapiens (human)
Heat shock protein HSP 90-alphaA heat shock protein HSP 90-alpha that is encoded in the genome of human. [PRO:DAN]Homo sapiens (human)
Sodium/potassium-transporting ATPase subunit beta-1A sodium/potassium-transporting ATPase subunit beta-1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P05026]Homo sapiens (human)
HLA class II histocompatibility antigen gamma chainAn MHC class II histocompatibility antigen gamma chain that is encoded in the genome of human. [PRO:WCB, UniProtKB:P04233]Homo sapiens (human)
T-cell surface glycoprotein CD4A CD4 molecule that is encoded in the genome of human. [PRO:DNx, UniProtKB:P01730]Homo sapiens (human)

Compounds (158)

CompoundDefinitionClassesRoles
adenine6-aminopurines;
purine nucleobase
Daphnia magna metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite
spermidinepolyazaalkane;
triamine
autophagy inducer;
fundamental metabolite;
geroprotector
n(6),n(6)-dimethyladenineN(6),N(6)-dimethyladenine : A tertiary amine that is adenine substituted at N-6 by geminal methyl groups.tertiary amine
indoprofenindoprofen : A monocarboxylic acid that is propionic acid in which one of the hydrogens at position 2 is substituted by a 4-(1-oxo-1,3-dihydroisoindol-2-yl)phenyl group. Initially used as an anti-inflammatory and analgesic, it was withdrawn from the market due to causing severe gastrointestinal bleeding. It has been subsequently found to increase production of the survival motor neuron protein.

Indoprofen: A drug that has analgesic and anti-inflammatory properties. Following reports of adverse reactions including reports of carcinogenicity in animal studies it was withdrawn from the market worldwide. (From Martindale, The Extra Pharmacopoeia, 30th ed, p21)
gamma-lactam;
isoindoles;
monocarboxylic acid
EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor;
non-narcotic analgesic;
non-steroidal anti-inflammatory drug
lansoprazoleLansoprazole: A 2,2,2-trifluoroethoxypyridyl derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. Lansoprazole is a racemic mixture of (R)- and (S)-isomers.benzimidazoles;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor
vitamin k 3Vitamin 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
nalidixic acid1,8-naphthyridine derivative;
monocarboxylic acid;
quinolone antibiotic
antibacterial drug;
antimicrobial agent;
DNA synthesis inhibitor
ns 1619NS 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
omeprazole5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole : A member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a [4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl group at position 2 and a methoxy group at position 5.

omeprazole : A racemate comprising equimolar amounts of (R)- and (S)-omeprazole.

Omeprazole: A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS.
aromatic ether;
benzimidazoles;
pyridines;
sulfoxide
pantoprazolepantoprazole : A member of the class of benzimidazoles that is 1H-benzimidazole substituted by a difluoromethoxy group at position 5 and a [(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl group at position 2.

Pantoprazole: 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.
aromatic ether;
benzimidazoles;
organofluorine compound;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
environmental contaminant;
xenobiotic
vorinostatvorinostat : 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
serineserine : An alpha-amino acid that is alanine substituted at position 3 by a hydroxy group.

Serine: A non-essential amino acid occurring in natural form as the L-isomer. It is synthesized from GLYCINE or THREONINE. It is involved in the biosynthesis of PURINES; PYRIMIDINES; and other amino acids.
L-alpha-amino acid;
proteinogenic amino acid;
serine;
serine family amino acid;
serine zwitterion
algal metabolite;
Escherichia coli metabolite;
human metabolite;
mouse metabolite;
Saccharomyces cerevisiae metabolite
adenosine diphosphateAdenosine 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
gliotoxingliotoxin : A pyrazinoindole with a disulfide bridge spanning a dioxo-substituted pyrazine ring; mycotoxin produced by several species of fungi.

Gliotoxin: A fungal toxin produced by various species of Trichoderma, Gladiocladium fimbriatum, Aspergillus fumigatus, and Penicillium. It is used as an immunosuppressive agent.
dipeptide;
organic disulfide;
organic heterotetracyclic compound;
pyrazinoindole
antifungal agent;
EC 2.5.1.58 (protein farnesyltransferase) inhibitor;
immunosuppressive agent;
mycotoxin;
proteasome inhibitor
tubercidintubercidin : An N-glycosylpyrrolopyrimidine that is adenosine in which the in the 5-membered ring that is not attached to the ribose moiety is replaced by a carbon. Tubercidin is produced in the culture broth of Streptomyces tubericidus.

Tubercidin: An antibiotic purine ribonucleoside that readily substitutes for adenosine in the biological system, but its incorporation into DNA and RNA has an inhibitory effect on the metabolism of these nucleic acids.
antibiotic antifungal agent;
N-glycosylpyrrolopyrimidine;
ribonucleoside
antimetabolite;
antineoplastic agent;
bacterial metabolite
vitamin k5vitamin k5: RN given refers to parent cpdnaphthols
anthranilamidesubstituted aniline
2-aminopyrimidineaminopyrimidine : 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
2-chloroadenosine5-chloroformycin A: structure given in first sourcepurine nucleoside
indazolesIndazoles: A group of heterocyclic aromatic organic compounds consisting of the fusion of BENZENE and PYRAZOLES.indazole
ethamivanetamivan : 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
9-fluorenonefluoren-9-one : The simplest member of the class fluoren-9-ones that is 9H-fluorene bearing an oxo substituent at position 9.fluoren-9-onesfungal xenobiotic metabolite
fructose-1,6-diphosphatebeta-D-fructofuranose 1,6-bisphosphate : A D-fructofuranose 1,6-bisphosphate with a beta-configuration at the anomeric position.D-fructofuranose 1,6-bisphosphatemouse metabolite
alpha-aminopyridinealpha-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.
hematoxylinHematoxylin: A dye obtained from the heartwood of logwood (Haematoxylon campechianum Linn., Leguminosae) used as a stain in microscopy and in the manufacture of ink.organic heterotetracyclic compound;
oxacycle;
polyphenol;
tertiary alcohol
histological dye;
plant metabolite
syringic acidsyringic acid : A dimethoxybenzene that is 3,5-dimethyl ether derivative of gallic acid.

syringic acid: RN given refers to parent cpd; structure in third source
benzoic acids;
dimethoxybenzene;
phenols
plant metabolite
3-hydroxyflavone3-hydroxyflavone: structure given in first source

flavonol : A monohydroxyflavone that is the 3-hydroxy derivative of flavone.
flavonols;
monohydroxyflavone
toyocamycintoyocamycin : An N-glycosylpyrrolopyrimidine that is tubercidin in which the hydrogen at position 5 of the pyrrolopyrimidine moiety has been replaced by a cyano group.

Toyocamycin: 4-Amino-5-cyano-7-(D-ribofuranosyl)-7H- pyrrolo(2,3-d)pyrimidine. Antibiotic antimetabolite isolated from Streptomyces toyocaensis cultures. It is an analog of adenosine, blocks RNA synthesis and ribosome function, and is used mainly as a tool in biochemistry.
antibiotic antifungal agent;
N-glycosylpyrrolopyrimidine;
nitrile;
ribonucleoside
antimetabolite;
antineoplastic agent;
apoptosis inducer;
bacterial metabolite
nsc 65346sangivamycin : A nucleoside analogue that is adenosine in which the nitrogen at position 7 is replaced by a carbamoyl-substituted carbon. It is a potent inhibitor of protein kinase C.

sangivamycin: RN given refers to parent cpd
nucleoside analogueprotein kinase inhibitor
digoxigenindigoxigenin : A hydroxy steroid that consists of 5beta-cardanolide having a double bond at the 20(22)-position as well as hydroxy groups at the 3beta-, 12beta- and 14beta-positions. It has been isolated from the plant species of the genus Digitalis.

Digoxigenin: 3 beta,12 beta,14-Trihydroxy-5 beta-card-20(22)-enolide. A cardenolide which is the aglycon of digoxin. Can be obtained by hydrolysis of digoxin or from Digitalis orientalis L. and Digitalis lanata Ehrh.
12beta-hydroxy steroid;
14beta-hydroxy steroid;
3beta-hydroxy steroid;
3beta-sterol
hapten;
plant metabolite
silybinsilibinin : 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
adenosinequinquefolan B: isolated from roots of Panax quinquefolium L.; RN not in Chemline 10/87; RN from Toxlitadenosines;
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
5-hydroxyflavoneflavones
4-aminopyrimidineaminopyrimidine
epicatechin(-)-epicatechin : A catechin with (2R,3R)-configuration.catechin;
polyphenol
antioxidant
6-hydroxyflavone6-hydroxyflavone: antioxidant; structure in first sourcehydroxyflavonoid
alkanninalkannin: a naphthazarin used to promote wound healing, from the plant Alkanna tinctoria; RN given refers to (S)-isomer; structurehydroxy-1,4-naphthoquinone
2-acetylamino-3-chloro-1,4-naphthoquinone2-acetylamino-3-chloro-1,4-naphthoquinone: structure in first source
2-aminopyrazinepyrazines
digoxigenin-bis(digitoxoside)cardenolide glycoside
catalposide
8-aminoadenosine
adenosine-5'-carboxylic acidpurine nucleoside
hydroxybenzindazolehydroxybenzindazole: structure
adenosine 5'-carboxamideadenosine 5'-carboxamide: structure
5-benzyloxytryptophan
isopentaquine
5'-n-methylcarboxamideadenosine5'-N-methylcarboxamideadenosine: RN given refers to (beta-D)-isomer
n-methyladenosineN-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
deguelindeguelin : 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
Zearalanonemacrolide;
resorcinols
neoeriocitrinneoeriocitrin : A flavanone glycoside that is eriodictyol substituted by a 2-O-(6-deoxy-alpha-L-mannopyranosyl)-beta-D-glucopyranosyl residue at position 7 via a glycosidic linkage.

neoeriocitrin: protects against autophagy-inhibiting effects of okadaic acid; isolated from Drynariae rhizome; structure in first source
4'-hydroxyflavanones;
disaccharide derivative;
flavanone glycoside;
neohesperidoside;
trihydroxyflavanone
plant metabolite
oxymatrineoxysophoridine: an alkaloid isolated from Sophra alope; structure in first sourcealkaloid;
tertiary amine oxide
2-(4-morpholinyl)-4h-1-benzopyran-4-one2-(4-morpholinyl)-4H-1-benzopyran-4-one: an aminochromone; exhibits both antiproliferative and antichemotactic activity in vitro
rostafuroxinrostafuroxin: structure in first source
tanshinone ii atashinone IIA: a cardiovascular agent with antineoplastic activity; isolated from Salvia miltiorrhiza; structure in first sourceabietane diterpenoid
(-)-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
5'-deoxyadenosine5'-deoxyadenosine : A 5'-deoxyribonucleoside compound having adenosine as the nucleobase.

5'-deoxyadenosine: main heading DEOXYADENOSINE refers to the 3' cpd
5'-deoxyribonucleoside;
adenosines
Escherichia coli metabolite;
human metabolite;
mouse metabolite
ouabaincardiac glycoside : Steroid lactones containing sugar residues that act on the contractile force of the cardiac muscles.

ouabain : A steroid hormone that is a multi-hydroxylated alpha-L-rhamnosyl cardenoloide. It binds to and inhibits the plasma membrane Na(+)/K(+)-ATPase (sodium pump). It has been isolated naturally from Strophanthus gratus.

Ouabain: A cardioactive glycoside consisting of rhamnose and ouabagenin, obtained from the seeds of Strophanthus gratus and other plants of the Apocynaceae; used like DIGITALIS. It is commonly used in cell biological studies as an inhibitor of the NA(+)-K(+)-EXCHANGING ATPASE.
11alpha-hydroxy steroid;
14beta-hydroxy steroid;
5beta-hydroxy steroid;
alpha-L-rhamnoside;
cardenolide glycoside;
steroid hormone
anti-arrhythmia drug;
cardiotonic drug;
EC 2.3.3.1 [citrate (Si)-synthase] inhibitor;
EC 3.1.3.41 (4-nitrophenylphosphatase) inhibitor;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
ion transport inhibitor;
plant metabolite
taxifolin(+)-taxifolin : A taxifolin that has (2R,3R)-configuration.taxifolinmetabolite
adenosine 5'-phosphoramidateadenosine 5'-phosphoramidate : The phosphoramadite analogue of AMP.organic phosphoramidateMycoplasma genitalium metabolite
digitoxindigitoxin : A cardenolide glycoside in which the 3beta-hydroxy group of digitoxigenin carries a 2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl trisaccharide chain.

Digitoxin: A cardiac glycoside sometimes used in place of DIGOXIN. It has a longer half-life than digoxin; toxic effects, which are similar to those of digoxin, are longer lasting. (From Martindale, The Extra Pharmacopoeia, 30th ed, p665)
cardenolide glycosideEC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor
micheliolidemicheliolide: has antineoplastic activity; structure in first sourcesesquiterpene lactone
alpha-D-fructofuranose 1,6-bisphosphatealpha-D-fructofuranose 1,6-bisphosphate : A D-fructofuranose 1,6-bisphosphate with an alpha-configuration at the anomeric position.D-fructofuranose 1,6-bisphosphate
ferulic acidferulate : A monocarboxylic acid anion obtained by the deprotonation of the carboxy group of ferulic acid.ferulic acidsanti-inflammatory agent;
antioxidant;
apoptosis inhibitor;
cardioprotective agent;
MALDI matrix material;
plant 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-amine8-(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-dionepyrimidotriazine
shikoninshikonin: a naphthazarin; has antineoplastic and angiogenesis inhibiting activitieshydroxy-1,4-naphthoquinone
1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-4-(4-methoxyphenyl)sulfonylpiperazinesulfonamide
6-[(2-fluorophenyl)methyl]-2,4-dimethyl-5-thieno[3,4]pyrrolo[1,3-d]pyridazinoneorganic heterobicyclic compound;
organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
cct018159CCT-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
digoxindigoxin : A cardenolide glycoside that is digitoxin beta-hydroxylated at C-12. A cardiac glycoside extracted from the foxglove plant, Digitalis lanata, it is used to control ventricular rate in atrial fibrillation and in the management of congestive heart failure with atrial fibrillation, but the margin between toxic and therapeutic doses is small.

Digoxin: A cardiotonic glycoside obtained mainly from Digitalis lanata; it consists of three sugars and the aglycone DIGOXIGENIN. Digoxin has positive inotropic and negative chronotropic activity. It is used to control ventricular rate in ATRIAL FIBRILLATION and in the management of congestive heart failure with atrial fibrillation. Its use in congestive heart failure and sinus rhythm is less certain. The margin between toxic and therapeutic doses is small. (From Martindale, The Extra Pharmacopoeia, 30th ed, p666)
cardenolide glycoside;
steroid saponin
anti-arrhythmia drug;
cardiotonic drug;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
epitope
adenosine-5'-(N-propyl)carboxamideadenosine-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-dionepyrimidotriazine
N-(4-methylphenyl)-2-oxo-3,4-dihydro-1H-quinoline-6-sulfonamidequinolines
digitoxigenindigitoxigenin : A 5beta-cardenolide that is 5beta-cardanolide with hydroxy substituents at the 3beta- and 14beta-positions and double bond unsaturation at C(20)-C(22).

Digitoxigenin: 3 beta,14-Dihydroxy-5 beta-card-20(22)enolide. A cardenolide which is the aglycon of digitoxin. Synonyms: Cerberigenin; Echujetin; Evonogenin; Thevetigenin.
14beta-hydroxy steroid;
3beta-hydroxy steroid
ver-490095-(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
N-(3,4-dimethylphenyl)-2-oxo-3,4-dihydro-1H-quinoline-6-sulfonamidequinolines
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
quercetin 3-o-glucopyranosidequercetin 3-O-beta-D-glucopyranoside : A quercetin O-glucoside that is quercetin with a beta-D-glucosyl residue attached at position 3. Isolated from Lepisorus contortus, it exhibits antineoplastic activityand has been found to decrease the rate of polymerization and sickling of red blood cells

quercetin 3-O-glucopyranoside: structure in first source
beta-D-glucoside;
monosaccharide derivative;
quercetin O-glucoside;
tetrahydroxyflavone
antineoplastic agent;
antioxidant;
antipruritic drug;
bone density conservation agent;
geroprotector;
histamine antagonist;
osteogenesis regulator;
plant metabolite
fisetin3'-hydroxyflavonoid;
7-hydroxyflavonol;
tetrahydroxyflavone
anti-inflammatory agent;
antioxidant;
EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor;
geroprotector;
metabolite;
plant 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
wogoninwogonin : A dihydroxy- and monomethoxy-flavone in which the hydroxy groups are positioned at C-5 and C-7 and the methoxy group is at C-8.

wogonin: structure in first source
dihydroxyflavone;
monomethoxyflavone
angiogenesis inhibitor;
antineoplastic agent;
cyclooxygenase 2 inhibitor;
plant metabolite
polydatintrans-piceid : A stilbenoid that is trans-resveratrol substituted at position 3 by a beta-D-glucosyl residue.beta-D-glucoside;
monosaccharide derivative;
polyphenol;
stilbenoid
anti-arrhythmia drug;
antioxidant;
geroprotector;
hepatoprotective agent;
metabolite;
nephroprotective agent;
potassium channel modulator
7-hydroxyflavone7-hydroxyflavone : A hydroxyflavonoid in which the flavone nucleus is substituted at position 7 by a hydroxy group.hydroxyflavonoid
geldanamycin1,4-benzoquinones;
ansamycin;
carbamate ester;
organic heterobicyclic compound
antimicrobial agent;
antineoplastic agent;
antiviral agent;
cysteine protease inhibitor;
Hsp90 inhibitor
17-(dimethylaminoethylamino)-17-demethoxygeldanamycin17-(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
derrubonederrubone: an inhibitor of the Hsp90 protein folding machinery from Derris robusta; structure in first sourceisoflavanones
monordenmonorden: inhibits HSP90 Heat-Shock Proteins, DNA topoisomerase VI and human Topoisomerase IIcyclic ketone;
enone;
epoxide;
macrolide antibiotic;
monochlorobenzenes;
phenols
antifungal agent;
metabolite;
tyrosine kinase inhibitor
(-)-catechin-3-O-gallate(-)-catechin-3-O-gallate : A gallate ester obtained by formal condensation of the carboxy group of gallic acid with the (3R)-hydroxy group of (-)-catechin.flavans;
gallate ester;
polyphenol
metabolite
tanespimycinCP 127374: analog of herbimycin A1,4-benzoquinones;
ansamycin;
carbamate ester;
organic heterobicyclic compound;
secondary amino compound
antineoplastic agent;
apoptosis inducer;
Hsp90 inhibitor
vildagliptinamino acid amide
N-(3-methylphenyl)-2-oxo-3,4-dihydro-1H-quinoline-6-sulfonamidequinolines
1-aminoadenosine1-aminoadenosine: structure
N-(4-fluorophenyl)-2-oxo-3,4-dihydro-1H-quinoline-6-sulfonamidequinolines
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
reblastatinreblastatin: structure in first source
5'-amino-5'-deoxyadenosine
cycloproparadicicolcycloproparadicicol: structure in first source
gambogic acidgambogic acid: RN given refers to (1R-(1alpha,1(Z),3abeta,5alpha,11beta,14aS*))-isomerpyranoxanthonesmetabolite
ipi 49317-aminogeldanamycin: structure in first source
n-cyclopropyl adenosine-5'-carboxamide
phakellistatin 2phakellistatin 2: isolated from the marine sponge Phakellia carteri; structure in first source
pochonin dpochonin D: secondary metabolite of Pochonia chlamydosporia; structure in first source
ec 144EC 144: structure in first source
crizotinibcrizotinib : A 3-[1-(2,6-dichloro-3-fluorophenyl)ethoxy]-5-[1-(piperidin-4-yl)pyrazol-4-yl]pyridin-2-amine that has R configuration at the chiral centre. The active enantiomer, it acts as a kinase inhibitor and is used for the treatment of patients with locally advanced or metastatic non-small cell lung cancer (NSCLC)

Crizotinib: A piperidine and aminopyridine derivative that acts as an inhibitor of RECEPTOR PROTEIN-TYROSINE KINASES, including ANAPLASTIC LYMPHOMA KINASE (ALK) and HEPATOCYTE GROWTH FACTOR RECEPTOR (HGFR; c-Met). It is used in the treatment of NON-SMALL CELL LUNG CANCER.
3-[1-(2,6-dichloro-3-fluorophenyl)ethoxy]-5-[1-(piperidin-4-yl)pyrazol-4-yl]pyridin-2-amineantineoplastic agent;
biomarker;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor
snx-7081SNX-7081: Anti-Inflammatory Agent; structure in first source
6-o-coumaroylcatalpolcinnamate 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
digitoxigenin monodigitoxosidedigitoxigenin monodigitoxoside: RN given refers to (ribo-3beta,5beta)-isomer
evomonosideevomonoside : A cardenolide glycoside consisting of digitoxigenin having an alpha-L-rhamnosyl moiety attached at the O(3)-position.

evomonoside: a cytotoxic cardiac glycoside from Lepidium apetalum; RN refers to (3beta,5beta)-isomer
cardenolide glycoside
complestatinchloropeptin II : A heterodetic cyclic peptide consisting of N-acylated trytophan, 3,5-dichloro-4-hydroxyphenylglycine, 4-hydroxyphenylglycine, 3,5-dichloro-4-hydroxyphenylglycyl, tyrosine and 4-hydroxyphenylglycine residues joined in sequence and in which the side-chain of the central 4-hydroxyphenylglycine residue is attached to the side-chain of the tryptophan via a C3-C6 bond and to the side-chain of the tyrosine via an ether bond from C5. It is isolated from the culture broth of Streptomyces and has anti-HIV-1 activity.

complestatin: compound extracted from Streptomyces lavendulae mycelia; on acid hydrolysis yields D-4-hydroxyphenylglycine & D-3,5-dichloro-4-hydroxyphenylglycine & acidic chromophore; inhibits gp120-CD4 binding

isocomplestatin : A heterodetic cyclic peptide which is a atropisomer of complestatin. It is isolated from the culture broth of Streptomyces and has anti-HIV-1 activity.
cyclic ether;
heterodetic cyclic peptide;
indoles;
organic heterobicyclic compound;
organochlorine compound;
peptide antibiotic;
polyphenol
anti-HIV-1 agent;
antimicrobial agent;
HIV-1 integrase inhibitor;
metabolite
cnf 20242-aminopurines;
aromatic ether;
organochlorine compound;
pyridines
antineoplastic agent;
Hsp90 inhibitor
halisulfate 1halisulfate 1: an isocitrate lyase inhibitor sesterterpene sulfate from sponge, Hippospongia sp.; structure in first sourceorganic molecular entitymetabolite
snx 2112SNX 2112: an orally available small molecule Hsp90 inhibitor; structure in first source
ver 155008VER 155008: structure in first sourcepurine nucleoside
nvp-bep800
1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-4-(4-fluorophenyl)sulfonylpiperazinesulfonamide
(2R)-4-(2,6-difluorophenyl)sulfonyl-1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-2-methylpiperazinesulfonamide
(2R)-1-(2,6-difluorophenyl)sulfonyl-4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-2-methylpiperazinesulfonamide
(2S)-4-(2,6-difluorophenyl)sulfonyl-1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-2-methylpiperazinesulfonamide
(2S)-1-(2,6-difluorophenyl)sulfonyl-4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-2-methylpiperazinesulfonamide
4-(2,6-difluorophenyl)sulfonyl-1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)piperidinebenzodioxine
1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-4-(2-pyridinylsulfonyl)piperazinepyridines;
sulfonamide
N-[1-(2,6-difluorophenyl)sulfonyl-4-piperidinyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
1-(2,6-difluorophenyl)sulfonyl-4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-1,4-diazepanesulfonamide
N-[4-[(2,6-difluorophenyl)sulfonylamino]cyclohexyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-4-[3-(trifluoromethyl)phenyl]sulfonylpiperazinesulfonamide
N-[[1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-3-azetidinyl]methyl]-2,6-difluorobenzenesulfonamidesulfonamide
N-[[1-(2,6-difluorophenyl)sulfonyl-3-azetidinyl]methyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[1-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-3-pyrrolidinyl]-2,6-difluorobenzenesulfonamidesulfonamide
N-[3-[(2,6-difluorophenyl)sulfonylamino]propyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[5-[(2,6-difluorophenyl)sulfonylamino]pentyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[6-[(2,6-difluorophenyl)sulfonylamino]hexyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[2-[(2,6-difluorophenyl)sulfonylamino]ethyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[1-(2,6-difluorophenyl)sulfonyl-3-pyrrolidinyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
N-[4-[(2,6-difluorophenyl)sulfonylamino]butyl]-2,3-dihydro-1,4-benzodioxin-6-sulfonamidesulfonamide
3-[(2-fluorophenyl)methyl]-5-methyl-4-thieno[3,4]pyrrolo[1,3-d]pyrimidinonepyrrolopyrimidine
6-[(2-fluorophenyl)methyl]-2-(1-hydroxyethyl)-4-methyl-5-thieno[3,4]pyrrolo[1,3-d]pyridazinoneorganic heterobicyclic compound;
organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
debio 0932CUDC 305: an Hsp90 inhibitor with antineoplastic activity; structure in first source
pf 04929113
6-[(3-methoxyphenyl)methyl]-4-methyl-2-methylsulfinyl-5-thieno[3,4]pyrrolo[1,3-d]pyridazinoneorganic heterobicyclic compound;
organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
6-[(3-aminophenyl)methyl]-4-methyl-2-methylsulfinyl-5-thieno[3,4]pyrrolo[1,3-d]pyridazinoneML-265: a small molecule activator of PKM2organic heterobicyclic compound;
organonitrogen heterocyclic compound;
organosulfur heterocyclic compound
3-[[4-(2,3-dihydro-1,4-benzodioxin-6-ylsulfonyl)-1,4-diazepan-1-yl]sulfonyl]anilinebenzenes;
sulfonamide
ch5164840CH5164840: biotin-labeled version of 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG)
novobiocinnovobiocin : 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
tas-116
2-(3,4-dimethoxyphenyl)-1-(5-methoxy-2,2-dimethyl-2h-chromen-6-yl)ethanone2-(3,4-dimethoxyphenyl)-1-(5-methoxy-2,2-dimethyl-2H-chromen-6-yl)ethanone: an Hsp90 inhibitor; structure in first source
pf-06463922lorlatinib : A cyclic ether that is 16,17-dihydro-2H-8,4-(metheno)pyrazolo[4,3-h][2,5,11]benzoxadiazacyclotetradecin-15(10H)-one substituted by methyl groups at positions 2 and 10R, and by cyano, amino and fluoro groups at positions 3, 7 and 12 respectively. It is a small molecule inhibitor of ALK and ROS1 kinase developed by Pfizer for the treatment of ALK-positive non-small cell lung cancer.

lorlatinib: inhibits both anaplastic lymphoma kinase and c-ros oncogene 1 (ROS1) protein
aminopyridine;
aromatic ether;
azamacrocycle;
benzamides;
cyclic ether;
monofluorobenzenes;
nitrile;
organic heterotetracyclic compound;
pyrazoles
antineoplastic agent;
EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor
ver-246608VER-246608: inhibits pyruvate dehydrogenase kinase; structure in first source
ver-50589VER-50589: inhibits heat shock protein 90 molecular chaperone; structure in first source
ver 52296luminespib : 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 9090ring assembly;
triazoles
nms-e973NMS-E973: structure in first source