45 Results for "

α-helix

" in MedChemExpress (MCE) Product Catalog:
Products (45)

45 Results for "α-helix" in MCE Product Catalog:

1
1 Cited Publications
Cat. No.: HY-P2080B
Target:  

Insulin Receptor

Research Areas:  

Metabolic Disease

GIP (1-30) amide,human acetate is a glucose-dependent insulinotropic polypeptide (GIP) fragment. GIP is an incretin hormone that stimulates insulin secretion and reduces postprandial glycaemic excursions. GIP (1-30) amide,human acetate dose-dependently promotes insulin secretion over the range 10 -9-10 -6 M .
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1
1 Cited Publications
Cat. No.: HY-P2294A
Target:  

TGF-β Receptor

Research Areas:  

Inflammation/Immunology

pm26TGF-β1 TFA peptide is a peptide that mimics a portion of the human TGF-β1 molecule. pm26TGF-β1 peptide TFA shows high affinity for the TGF-β1 receptor. pm26TGF-β1 peptide TFA displays potent anti-inflammatory properties and does not exhibit neutrophils’ chemoattraction .
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1
1 Cited Publications
Cat. No.: HY-P7214
Purity:  ≥ 95%, as determined by reducing SDS-PAGE.
Synonyms: IL20; Cytokine Zcyto10; Interleukin 20; Interleukin-20; ZCYTO10; Interleukin Family Protein; IL-20; Four Alpha helix Cytokine; IL10D
Species:  
Human
Source:  
E. coli
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Cat. No.: HY-P5423
CAS No.: 107658-43-5
Target:  

Exosomes Liposome

Research Areas:  

Cancer

GALA is a pH-responsive amphipathic peptide consisting of 30 amino acids, which acts as a lung endothelium-targeting ligand. GALA undergoes a conformational transition from random coil to α-helix in an acidic environment at pH 5.0, thereby inducing endosomal membrane destabilization and fusion. GALA-modified liposomes traverse lung endothelial cells via clathrin-dependent endocytosis and transcytosis, and specifically accumulate in the lungs after intravenous injection. GALA significantly promotes the cytosolic release of cargos carried by exosomes, plasmids and liposomes, effectively enhances gene transfection efficiency, and drives gene knockdown of functional macromolecules (such as siRNA) in alveolar epithelial cells (with no significant cytotoxicity at effective concentrations). GALA serves as a critical tool for studies on lung cancer metastasis (e.g., melanoma lung metastasis) and lung-targeted drug delivery systems .
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Cat. No.: HY-P0311
CAS No.: 184776-51-0
Target:  

Bacterial

Research Areas:  

Infection

LAH4, an alpha-helix of the designed amphipathic peptide antibiotic, exhibits potent antimicrobial, nucleic acid transfection and cell penetration activities. LAH4 possesses high plasmid DNA delivery capacities. LAH4 has a strong affinity for anionic lipids found in the outer membrane of bacterial membranes .
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Cat. No.: HY-P5726
CAS No.: 302343-01-7
Target:  

Bacterial Antibiotic

Research Areas:  

Infection Cancer

Aurein 1.2 is a C-terminally amidated antimicrobial peptide found in Litoria raniformis. Aurein 1.2 exhibits moderate, broad-spectrum antimicrobial activity against a variety of bacteria, with a MIC of 12-100 μg/mL. Aurein 1.2 forms an amphipathic α-helix with distinct hydrophilic and hydrophobic faces, and may exert antimicrobial and cytotoxic effects on tumor cells by disrupting cell membranes. Aurein 1.2 can be used in studies related to antimicrobial peptides, membrane-active peptides, and tumor cytotoxicity .
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Cat. No.: HY-W006886
CAS No.: 945212-26-0
Research Areas:  

Others

Fmoc-(R)-2-(7-octenyl) Ala-OH is an unnatural Fmoc-protected amino acid and modification module. Fmoc-(R)-2-(7-octenyl) Ala-OH serves as a key building block for all-hydrocarbon cross-linking modification of antimicrobial peptides, and facilitates the generation of stapled peptide derivatives. When introduced into specific sites of the parent peptide, Fmoc-(R)-2-(7-octenyl) Ala-OH effectively increases the α-helix content of the peptide chain, thereby significantly enhancing its antimicrobial activity and proteolytic stability. Fmoc-(R)-2-(7-octenyl) Ala-OH is widely used in research on bacterial infections and the development of related antimicrobial agents . Stapled peptide is a specially chemically modified polypeptide. It locks the peptide chain into a stable α-helical structure by introducing a "staple"-like chemical bridge (usually an all-carbon backbone) at specific positions of the peptide chain.
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Cat. No.: HY-W028350
CAS No.: 40106-12-5
Research Areas:  

Infection

NSC727447 is a vinyl urea-based allosteric inhibitor of HIV reverse transcriptase-associated RNase H with IC50 values of 2.0 μM and 2.5 μM against HIV-1 and HIV-2 RNase H, respectively, and IC50 values of 100 μM and 10.6 μM against Escherichia coli and human RNase H, respectively. NSC727447 exerts allosteric inhibitory effects mainly by interacting with the region adjacent to α-helix I in the thumb subdomain of the p51 subunit of HIV-1 reverse transcriptase. Cys280, Lys281 and the RNase H primer grip region are involved in its action, and it may inhibit the catalytic activity of RNase H by altering the positioning of nucleic acid substrates or the geometry of the RNase H active site. NSC727447 can be used in studies related to HIV infection, the function of HIV reverse transcriptase RNase H, and allosteric inhibition mechanisms .
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Cat. No.: HY-P1341
CAS No.: 343268-91-7
Synonyms: Orexin A (17-33) (human, mouse, rat, bovine)
OXA (17-33) (Orexin A (17-33) (human, mouse, rat, bovine)) is the shortest active orexin peptide that selectively targets OX1 (EC50=8.29 nM), with 23-fold selectivity for the OX1 receptor over the OX2 receptor. The activity of OXA (17-33) depends on the Tyr17, Leu20, Asn25, His26 residues and the spatial conformation of the α-helix. OXA (17-33) activates signaling pathways involving inositol-1,4,5-trisphosphate receptor (IP3R), phospholipase D (PL-D) and choline-Sigma-1R, thereby increasing the cytoplasmic Ca 2+ level in nucleus accumbens neurons, an effect that is blocked by Sigma-1R antagonists. OXA (17-33) serves as an important biological probe for investigating the function of the OX1 receptor. OXA (17-33) can be modified via incorporation of mixed disulfide bonds of homocysteine and cysteamine, and is widely used in studies related to insomnia and narcolepsy .
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Cat. No.: HY-P0311A
Target:  

Bacterial

Research Areas:  

Infection

LAH4 TFA, an alpha-helix of the designed amphipathic peptide antibiotic, exhibits potent antimicrobial, nucleic acid transfection and cell penetration activities. LAH4 TFA possesses high plasmid DNA delivery capacities. LAH4 TFA has a strong affinity for anionic lipids found in the outer membrane of bacterial membranes .
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Cat. No.: HY-P4118
CAS No.: 952754-66-4
Synonyms: Penetrating analog
EB1 peptide (Penetrating analog) is an endosomolytic agent and siRNA delivery agent. EB1 peptide forms an amphipathic alpha helix upon protonation in early-late endosomes, drives endosomal membrane permeabilization, and enables endocytosed siRNA escape into the cytosol. EB1 peptide facilitates biologically active siRNA cellular uptake and targeted gene silencing. EB1 peptide forms complexes with siRNA. EB1 peptide can be used for drug delivery research .
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Cat. No.: HY-75129
CAS No.: 1692-25-7
Research Areas:  

Others

Pyridin-3-ylboronic acid is a synthetic building block belonging to the pyridine boronic acid class. Pyridin-3-ylboronic acid serves as a substrate for the Suzuki-Miyaura coupling reaction to construct oligopyridine backbones. Pyridin-3-ylboronic acid also acts as a heteroaryl boronic acid in the phosphine-free Suzuki-Miyaura coupling reaction of 2-iodogalactal. Pyridin-3-ylboronic acid is applicable to research related to organic synthesis .
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Cat. No.: HY-P4119
CAS No.: 863608-35-9
Research Areas:  

Others

Pep-1-Cysteamine is an amphipathic chimeric cell-penetrating peptide. Pep-1-Cysteamine can penetrate biological membranes in an energy-independent manner without forming transmembrane pores, and efficiently deliver active proteins into cells, with its translocation dominated by electrostatic interactions and membrane perturbation .
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Cat. No.: HY-P5917A
Synonyms: Vaejovis mexicanus peptide 24 TFA
Target:  

Potassium Channel

Research Areas:  

Inflammation/Immunology Cancer

Vm24-toxin (Vaejovis mexicanus peptide 24) TFA, a 36-residue peptide, is a potent and selective Kv1.3 blocker with a Kd of ~3 pM in lymphocytes. Vm24-toxin TFA shows >1500-fold affinity for Kv1.3 over other assayed potassium channels. Vm24-toxin TFA folds into a distorted cystine-stabilized α/β motif consisting of a single-turn α-helix and a three-stranded antiparallel β-sheet, stabilized by four disulfide bridges. Vm24-toxin TFA attenuates the CD4 + effector memory T cell response to T cell receptor (TCR) stimulation .
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Cat. No.: HY-P10319
Target:  

PKA

Research Areas:  

Cardiovascular Disease Cancer

RI-STAD-2 is a high-affinity interfering peptide that regulates the subunit RI of protein kinase A (PKA). RI-STAD-2 interferes with the binding of AKAPs and PKA-RI by simulating the interaction between AKAPs' α-helix domain and PKA-RI's dimerization/anchoration (D/D) domain, thereby affecting PKA activity and intracellular localization. RI-STAD-2 can be used to study the role of AKAPs interaction with PKA-RI in pathological processes such as cardiovascular disease and cancer .
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Cat. No.: HY-P2080
CAS No.: 198624-01-0
Target:  

Insulin Receptor

Research Areas:  

Metabolic Disease

GIP (1-30) amide,human is a glucose-dependent insulinotropic polypeptide (GIP) fragment. GIP is an incretin hormone that stimulates insulin secretion and reduces postprandial glycaemic excursions. GIP (1-30) amide,human dose-dependently promotes insulin secretion over the range 10 -9-10 -6 M .
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Cat. No.: HY-P3916
CAS No.: 136831-50-0
Target:  

Bacterial

Research Areas:  

Infection Inflammation/Immunology

GVLSNVIGYLKKLGTGALNAVLKQ is an antimicrobial peptide with 24-amino acid. GVLSNVIGYLKKLGTGALNAVLKQ can potentially form α-helix. GVLSNVIGYLKKLGTGALNAVLKQ (PGQ) has activity against Gram-negative, Gram-positive bacteria and the yeast Candida albicans .
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Cat. No.: HY-P2294
Target:  

TGF-β Receptor

Research Areas:  

Inflammation/Immunology

pm26TGF-β1 peptide is a peptide that mimics a portion of the human TGF-β1 molecule. pm26TGF-β1 peptide shows high affinity for the TGF-β1 receptor. pm26TGF-β1 peptide displays potent anti-inflammatory properties and does not exhibit neutrophils’ chemoattraction .
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Cat. No.: HY-168886
Target:  

c-Myc

Research Areas:  

Cancer

Anticancer agent 263 (compound 7) is a potent anticancer agent. Anticancer agent 263 binds to the G-quadruplex DNA (G4) sequence 22-mer Pu22, a mimic of c-Myc DNA. Anticancer agent 263 is a structure modulator, showcasing a significant enhancement in protein α-helix formation and the capability to form supramolecular network. Anticancer agent 263 shows no cytotoxicity .
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Cat. No.: HY-P10534
CAS No.: 873582-78-6
ccβ is a 17-residue peptide that folds into a coiled-coil trimer at low temperatures and aggregates to form amyloid fibrils at high temperatures. ccβ serves as a simple model system for investigating α-helix to β-sheet conformational transitions and template-mediated aggregation processes associated with prion and amyloidogenic diseases. ccβ can be used in studies of prion diseases and Alzheimer's disease .
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