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Results for "

cysteine residue

" in MedChemExpress (MCE) Product Catalog:

By Targets:	ADC Linker (1) Amino Acid Derivatives (1) Apoptosis (1) Autophagy (1) Bacterial (1) DNA/RNA Synthesis (1) Drug Metabolite (1) EGFR (2) Endogenous Metabolite (1) Fluorescent Dye (4) Hippo (MST) (1) Histone Methyltransferase (1) HIV (1) IKK (1) Influenza Virus (1) NF-κB (2) NO Synthase (1) Parasite (1) PKC (1) Ras (1) RGS Protein (1) SARS-CoV (1) STING (2) TRP Channel (1)
By Research Areas:	Cancer (10) Infection (3) Inflammation/Immunology (8) Metabolic Disease (2) Neurological Disease (3)

Inhibitors & Agonists

Screening Libraries

Fluorescent Dye

Peptides

Natural
Products

Targets Recommended: ASCT

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-145674

HDP 30.1699	Others	Cancer
HDP 30.1699, the derivative of α-Amanitin, shows considerable cross-links. The cysteine residues of the anti-HER2 THIOMAB antibody are used for conjugation of the cysteine reactive linker–Amanitin compound, HDP 30.1699, with a cleavable linker by maleimide chemistry .

HY-135113

Lanthionine	Amino Acid Derivatives	Others
Lanthionine is a cysteine derivative. Lanthionine is linked by a disulfide bond formed by an oxidation reaction between two cysteine residues .

HY-P4101

Cys(Npys)-TAT (47-57)	HIV	Infection
Cys(Npys)-TAT (47-57) is a peptide fragment of TAT peptide and it is able to interact with plasmid DNA electrostatically. Cys(Npys)-TAT (47-57) is corresponding to the transduction domain of TAT with an activated cysteine residue C. TAT is a small nuclear transcriptional activator protein encoded by HIV-1 .

HY-N11085

Isophysalin A	NO Synthase IKK	Inflammation/Immunology
Isophysalin A is a physalin with alpha and beta unsaturated ketone components. Isophysalin A binds to GSH and targets multiple cysteine residues on IKKβ. Isophysalin A also inhibits inducible NO synthase (iNOS) and nitric oxide (NO) production, showing anti-inflammatory activity .

HY-120128

MTSEA hydrobromide	Others	Neurological Disease
MTSEA hydrobromide is a sulfhydryl-reactive compound that modifies free cysteine residues to produce a positively charged side chain approximately the size of lysine .

HY-12809

Optovin 1 Publications Verification	TRP Channel	Neurological Disease
Optovin is a reversible photoactivated TRPA1 ligand that enables light-mediated neuronal excitation. Optovin activates TRPA1 via structure-dependent photochemical reactions with redox-sensitive cysteine residues .

HY-19730

Olmutinib 5+ Cited Publications HM61713, BI 1482694	EGFR	Cancer
Olmutinib (HM61713; BI-1482694) is an orally active and irreversible third EGFR tyrosine kinase inhibitor that binds to a cysteine residue near the kinase domain. Olmutinib is used for NSCLC .

HY-14645

(-)-DHMEQ 25+ Cited Publications Dehydroxymethylepoxyquinomicin	NF-κB	Inflammation/Immunology Cancer
(-)-DHMEQ (Dehydroxymethylepoxyquinomicin) is a potent, selective and irreversible NF-κB inhibitor that covalently binds to a cysteine residue. (-)-DHMEQ inhibits nuclear translocation of NF-κB and shows anti-inflammatory and anticancer activity .

HY-D0843

N-Ethylmaleimide 5+ Cited Publications NEM
N-Ethylmaleimide (NEM) derives from maleic acid, it can alkylates free sulfhydryl. N-Ethylmaleimide is an irreversible cysteine protease inhibitor. N-ethylmaleimide specific inhibits phosphate transport in mitochondria. N-Ethylmaleimide inhibits prolyl endopeptidase with an IC₅₀ value of 6.3 μM. N-Ethylmaleimide can be used to modify cysteine residues in proteins and peptides .

HY-112906

C-176 Maximum Cited Publications 51 Publications Verification	STING	Inflammation/Immunology
C-176 is a selective and blood-brain barrier permeable STING inhibitor. C-176 covalently targets transmembrane cysteine residue 91 and thereby blocking activation-induced palmitoylation of STING .

HY-162156

TTK inhibitor 4	Others	Cancer
TTK inhibitor 4 (compound 16) is a potent inhibitor of threonine tyrosine kinase (TTK), with the IC₅₀ value of 0.016 μM, that has anti-tumor activity .

HY-138683

STING-IN-3 2 Publications Verification	STING	Inflammation/Immunology
STING-IN-3 is an inhibitor of stimulator of interferon genes (STING). STING-IN-3 efficiently inhibits both hsSTING and mmSTING through covalently target the predicted transmembrane cysteine residue 91 and thereby block the activation-induced palmitoylation of STING .

HY-P5681

Human α-Defensin 6	Bacterial	Infection Inflammation/Immunology
Human α-Defensin 6, a 32-residue cysteine-rich peptide, can inhibit bacterial invasion and contribute to the mucosal immunity. Human α-Defensin 6 forms ordered self-assembly fibrils and nanonets that surround and entangle bacteria after stochastic binding to bacterial surface proteins. Human α-Defensin 6 also inhibits C. albicans biofilm formation .

HY-16909

Leptomycin B 5 Publications Verification CI 940; LMB
Leptomycin B (CI 940; LMB) is a potent inhibitor of the nuclear export of proteins. Leptomycin B inactivates CRM1/exportin 1 by covalent modification at a cysteine residue. Leptomycin B is a potent antifungal antibiotic blocking the eukaryotic cell cycle .

HY-128945

CL2A	ADC Linker	Inflammation/Immunology Cancer
CL2A is a claevable complicated PEG8- and triazole-containing PABC-peptide-mc linker. CL2A is cleavable through pH sensitivity, giving rise to bystander effect, and binds the antibody at a cysteine residue via a disulfide bond. Labetuzumab govitecan used this linker .

HY-123749

Tetramethylrhodamine-5-iodoacetamide 5-TMRIA	Fluorescent Dye	Others
Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye that is used to non-specifically label proteins via the cysteine residues. Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) can be used to covalently label DNA fragments .

HY-135056

MitoTracker Green FM 3 Publications Verification	Fluorescent Dye	Others
Mito-Tracker Green is a green fluorescent dye that selectively accumulates in the mitochondrial matrix. MitoTracker Green FM covalently binds mitochondrial proteins by reacting with free mercaptan of cysteine residues, allowing staining of mitochondrial membrane potential independent of membrane potential. Excitation/emission wavelength 490/523 nm.

HY-W017464

NAPQI	Drug Metabolite Endogenous Metabolite	Metabolic Disease
NAPQI is the toxic metabolite of Acetaminophen (HY-66005). NAPQI is also an inhibitor of enzymes in the vitamin K cycle. NAPQI is rapidly detoxified by glutathione (GSH), but in situations of GSH deficiency, excess NAPQI reacts with cysteine residues in proteins, causing cell death and toxicity in the liver .

HY-137028

2′-Thioadenosine PD157432	EGFR	Cancer
2'-Thioadenosine (PD157432) is a selective and irreversible inhibitor of ErbB-1 and ErbB-2, with an IC₅₀ of 45 µM for ErbB-2. 2'-Thioadenosine covalently inactivates ErbB-1 via modification of a cysteine residue at the active site .

HY-N0191

Andrographolide 15+ Cited Publications Andrographis	NF-κB SARS-CoV Influenza Virus Autophagy Parasite	Infection Inflammation/Immunology Cancer
Andrographolide is a NF-κB inhibitor, which inhibits NF-κB activation through covalent modification of a cysteine residue on p50 in endothelial cells without affecting IκBα degradation or p50/p65 nuclear translocation. Andrographolide has antiviral effects.

HY-130149

Adagrasib 15+ Cited Publications MRTX849	Ras	Cancer
Adagrasib (MRTX849) is a potent, orally-available, and mutation-selective covalent inhibitor of KRAS G12C with potential antineoplastic activity. Adagrasib covalently binds to KRAS G12C at the cysteine at residue 12, locks the protein in its inactive GDP-bound conformation, and inhibits KRAS-dependent signal transduction .

HY-19564

JX06 1 Publications Verification
JX06 is a potent, selective and covalent inhibitor of PDK. JX06 inhibits PDK1, PDK2 and PDK3 with IC₅₀s of 49 nM, 101 nM, and 313 nM, respectively. JX06 inhibits PDK1 activity via covalently binding to a cysteine residue in an irreversible manner. JX06 shows significant antitumor activity .

HY-D1783

MitoTracker Deep Red FM	Fluorescent Dye	Others
MitoTracker Deep Red FM fluorescent dye that selectively accumulates in the mitochondrial matrix. MitoTracker Deep Red FM covalently binds mitochondrial proteins by reacting with free mercaptan of cysteine residues, allowing staining of mitochondrial membrane potential independent of membrane potential. Excitation/emission wavelength 644/665 nm . Storage: Keep away from light.

HY-D1363

BDP R6G maleimide	Fluorescent Dye	Others
BDP R6G maleimide is a borodipyrromethane fluorophore with absorption and emission wavelengths similar to those of R6G rhodamine. Sulfhydryl labelling is a common protein modification where the cysteine residues in the protein allow more site-specific labelling than the NHS ester of the amine group. BDP R6G maleimide is a thiol reactive dye that reacts with thiol groups to form thioester bonds .

HY-13509

CCG-50014 1 Publications Verification	RGS Protein	Inflammation/Immunology
CCG-50014 is the most potent against the regulator of G-protein signaling protein type 4 (RGS4) (IC₅₀ =30 nM) and is >20-fold selective for RGS4 over other RGS proteins. CCG-50014 binds covalently to the RGS, forming an adduct on two cysteine residues located in an allosteric regulatory site . CCG50014, reduces nociceptive responses and enhances opioid-mediated analgesic effects in the mouse formalin test .

HY-W002585

O6-Benzylguanine 1 Publications Verification	DNA/RNA Synthesis Apoptosis	Cancer
O6-Benzylguanine, a guanine analog, is the DNA repair enzyme O6-alkylguanine-DNA alkyltransferase (MGMT/AGT) inhibitor. O6-Benzylguanine acts as an AGT substrate, which transfers its benzyl group to the AGT cysteine residue, thereby irreversibly inactivating AGT and preventing DNA repair. O6-Benzylguanine induces tumor cell apoptosis. Antineoplastic activity .

HY-128206

I3MT-3 4 Publications Verification HMPSNE	Hippo (MST)	Metabolic Disease
I3MT-3 (HMPSNE) is a potent, selective, and cell-membrane permeable inhibitor of 3-Mercaptopyruvate sulfurtransferase (3MST) (IC₅₀=2.7 μM). I3MT-3 is inactive for other H2S/sulfane sulfur-producing enzymes. I3MT-3 targets a persulfurated cysteine residue located in the active site of 3MST .

HY-150510

MS8511	Histone Methyltransferase	Neurological Disease Cancer
MS8511 is a selective G9a/GLP covalent irreversible inhibitor by targeting a cysteine residue at the substrate binding site, with IC₅₀ values of 100 nM (G9a) and 140 nM (GLP), and K_d values of 44 nM (G9a) and 46 nM (GLP). MS8511 reduces the cellular H3K9me2 level and enhances antiproliferation activity. MS8511 can be used for the research of several types of cancers including brain, breast, ovarian, lung, bladder, melanoma, colorectal cancer, and other disease such as Alzheimer’s disease (AD), sickle cell disease, Prader−Willi syndrome (PWS) .

HY-P5439

Epsilon-V1-2, Cys-conjugated	PKC	Others
Epsilon-V1-2, Cys-conjugated is a biological active peptide. (This peptide is the εPKC specific inhibitor. Its inhibitory activity is based on εPKC translocation and MARCKS phosphorylation. This peptide interferes with εPKC interaction with the anchoring protein εRACK. This peptide contains a cysteine residue added to the C-terminus for potential S-S bond formation with a carrier protein.Pyroglutamyl (pGlu) peptides may spontaneously form when either Glutamine (Q) or Glutamic acid (E) is located at the sequence N-terminus. The conversion of Q or E to pGlu is a natural occurrence and in general it is believed that the hydrophobic γ-lactam ring of pGlu may play a role in peptide stability against gastrointestinal proteases. Pyroglutamyl peptides are therefore considered a normal subset of such peptides and are included as part of the peptide purity during HPLC analysis.)

Cat. No.	Product Name

HY-L153

Cysteine Targeted Covalent Library	4522 compounds
Covalent inhibitors are small molecules that can bind specifically to target proteins through covalent bonds and inhibit their biological functions. Although for a long time, covalent targeting has been playing a subordinate role in drug discovery, with an increasing number of reports on successful clinical applications of such drugs, the potential of these agents is now being acknowledged. Currently, cysteine is the most common covalent amino acid residue in a variety of covalent drugs, and various warheads have been developed that can react with cysteine, providing the key building blocks for covalent drugs to form covalent bonds. To meet the development needs of covalent inhibitors targeting cysteine, MCE has designed a unique collection of 4522 compounds with different covalent warheads that target cysteine. The MCE Cysteine Targeted Covalent Library is designed using the following covalent warheads: Acrylamides, Propiolic acid ester, Dimethylamine functionalized acrylamides, Chloroacetamides, Acrylonitrile, 2-Cyanoacrylamide, Aziridine, Haloacetamide, etc.

Cysteine Targeted Covalent Library

4522 compounds

Covalent inhibitors are small molecules that can bind specifically to target proteins through covalent bonds and inhibit their biological functions. Although for a long time, covalent targeting has been playing a subordinate role in drug discovery, with an increasing number of reports on successful clinical applications of such drugs, the potential of these agents is now being acknowledged. Currently, cysteine is the most common covalent amino acid residue in a variety of covalent drugs, and various warheads have been developed that can react with cysteine, providing the key building blocks for covalent drugs to form covalent bonds.

To meet the development needs of covalent inhibitors targeting cysteine, MCE has designed a unique collection of 4522 compounds with different covalent warheads that target cysteine. The MCE Cysteine Targeted Covalent Library is designed using the following covalent warheads: Acrylamides, Propiolic acid ester, Dimethylamine functionalized acrylamides, Chloroacetamides, Acrylonitrile, 2-Cyanoacrylamide, Aziridine, Haloacetamide, etc.

HY-L154

Cysteine Targeted Covalent Fragment Library	3164 compounds
Covalent inhibitors are small molecules that can bind specifically to target proteins through covalent bonds and inhibit their biological functions. Although for a long time, covalent targeting has been playing a subordinate role in drug discovery, with an increasing number of reports on successful clinical applications of such drugs, the potential of these agents is now being acknowledged. Currently, cysteine is the most common covalent amino acid residue in a variety of covalent drugs, and various warheads have been developed that can react with cysteine, providing the key building blocks for covalent drugs to form covalent bonds. To meet the development needs of covalent inhibitors targeting cysteine, MCE has designed a unique collection of 3164 fragments with different covalent warheads that target cysteine. The MCE Cysteine Targeted Covalent Fragment Library is designed using the following covalent warheads: Acrylamides, Propiolic acid ester, Dimethylamine functionalized acrylamides, Chloroacetamides, Acrylonitrile, 2-Cyanoacrylamide, Aziridine, Haloacetamide, etc. All fragments are pre-filtered with the Rule of Three restrictions which can be used for fragment-based covalent drug development.

Cysteine Targeted Covalent Fragment Library

3164 compounds

To meet the development needs of covalent inhibitors targeting cysteine, MCE has designed a unique collection of 3164 fragments with different covalent warheads that target cysteine. The MCE Cysteine Targeted Covalent Fragment Library is designed using the following covalent warheads: Acrylamides, Propiolic acid ester, Dimethylamine functionalized acrylamides, Chloroacetamides, Acrylonitrile, 2-Cyanoacrylamide, Aziridine, Haloacetamide, etc. All fragments are pre-filtered with the Rule of Three restrictions which can be used for fragment-based covalent drug development.

MitoTracker Green FM 3 Publications Verification	Fluorescent Dyes/Probes
Mito-Tracker Green is a green fluorescent dye that selectively accumulates in the mitochondrial matrix. MitoTracker Green FM covalently binds mitochondrial proteins by reacting with free mercaptan of cysteine residues, allowing staining of mitochondrial membrane potential independent of membrane potential. Excitation/emission wavelength 490/523 nm.

Tetramethylrhodamine-5-iodoacetamide 5-TMRIA	Dyes
Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) is a thiol-selective reactive dye that is used to non-specifically label proteins via the cysteine residues. Tetramethylrhodamine-5-iodoacetamide (5-TMRIA) can be used to covalently label DNA fragments .

BDP R6G maleimide	Fluorescent Dyes/Probes
BDP R6G maleimide is a borodipyrromethane fluorophore with absorption and emission wavelengths similar to those of R6G rhodamine. Sulfhydryl labelling is a common protein modification where the cysteine residues in the protein allow more site-specific labelling than the NHS ester of the amine group. BDP R6G maleimide is a thiol reactive dye that reacts with thiol groups to form thioester bonds .

Cat. No.	Product Name	Target	Research Area