Peptídeos

Z-Gly-Phe-NH2 is a peptide that inhibits protein synthesis by binding to the ribosome. It has been shown to inhibit enzyme preparations containing peptides and proteins, such as hydrogen bond formation, phase transition temperature, uptake, and inhibitory effect. This molecule may be used in biochemical or molecular studies of protein synthesis. The uptake of Z-Gly-Phe-NH2 can be inhibited by ouabain binding. Z-Gly-Phe-NH2 also has a ca2+ response when calcium ionophores are applied to Xenopus oocytes.

Fibronectin is an extracellular matrix protein that plays a critical role in cell adhesion, migration, and differentiation. Fibronectin subunits are composed of repeating units of three types of modules: type I, type II, and type III. The active fragment of fibronectin refers to a small peptide sequence within the type III modules of fibronectin that has been shown to have potent biological activity.
The fibronectin active fragment, also known as the cell-binding domain or RGD domain, is a short peptide sequence consisting of the amino acid sequence Arg-Gly-Asp (RGD). This peptide sequence interacts with cell surface receptors known as integrins, which are important for mediating cell adhesion, migration, and signaling.
The fibronectin active fragment has been extensively studied as a research tool to investigate the mechanisms of cell adhesion and migration. It has also been used in tissue engineering applications to promote cell attachment and proliferation on synthetic biomaterials.

m-dPEG®7-Tosylate is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. m-dPEG®7-Tosylate is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

Prolactin-Releasing Peptide (Rat) is a cyclic 18-amino acid peptide that is an inhibitor of the prolactin releasing hormone. It has been shown to have a high specificity for the prolactin releasing hormone receptor and has been used as a research tool in cell biology and pharmacology. This peptide can be used to study protein interactions, which may be due to its ability to act as an activator or ligand for receptors. Prolactin-Releasing Peptide (Rat) is also able to inhibit ion channels, such as voltage-gated potassium channels and calcium channels. This peptide can also be used to generate antibodies against the prolactin releasing hormone receptor.

Bis-dPEG®7-PFP Ester is a PEG polymer categorised as homobifunctional PEG (X-PEG X). Used as a linker, bis-dPEG®7-PFP Ester is used to attached PEG to proteins, peptides, oligonucleotides, nanoparticles and small molecules via pegylation, a bioconjugation technique.

Corticotropin Releasing Factor (CRF) is a peptide hormone involved in the regulation of the neuroendocrine system, the hypothalamic-pituitary-adrenal (HPA) axis. The hypothalamus releases CRF during stress and in turn CRF stimulates the production of stress hormones such as glucocorticoids and adrenocorticotropin (ACTH). A negative feedback loop is created as glucocorticoids then prevents further endocrine activity exhibited by the pituitary gland and hypothalamus. Interestingly in patients with depression, it has been found that the hypothalamic-pituitary adrenal axis is over stimulated thus increased production of CRF occurs resulting in depression symptoms. Furthermore studies have shown the expression of CRF receptors in glial cells and T-cells and elevated levels of CRF and glucocorticoids prevent T-cell proliferation. During stress cytokines can also stimulate the secretion of CRF. However CRF can also regulate these cytokines. CRF has the potential to be used in the research into depression treatments. 
This product is available as a 0.1mg vial.

Nojirimycin Bisulfite is a potent inhibitor of protein synthesis. It is a receptor-selective ligand that binds to the extracellular domain of the epidermal growth factor (EGF) receptor, thereby inhibiting receptor signaling. Nojirimycin Bisulfite has also been shown to inhibit ion channels and ligand-gated ion channels. Nojirimycin Bisulfite has been shown to bind to both peptides and antibodies, which makes it a useful research tool for studying protein interactions.

IL-1α is a cytokine protein that has been shown to be involved in the immune system. IL-1α is an activator of the receptor and is also a ligand for it. The protein has been shown to activate ion channels, which are proteins that allow ions to pass through either by diffusion or by facilitated transport. This activation causes cells to produce more hydrogen ions, which leads to an increase in the acidity of the cell. IL-1α has also been shown to inhibit cell proliferation and induce apoptosis.

MAL-dPEG®4-Acid is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. MAL-dPEG®4-Acid is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

Ac-Arg-OMe • HCl is a labile peptide that has been shown to be homologous to the human Arg-Gly-Asp (RGD) sequence. Ac-Arg-OMe • HCl is activated by trypsin and trypsin-like proteases, but inactivated by hemolytic activity and conformation. Ac-Arg-OMe • HCl is an enzyme substrate for peptidases such as trypsin and trypsin like proteases. It has been shown to be a molecule that interacts with various proteins, including hemoglobin.

Boc-Leu-Gly-Arg-AMC is a peptide that binds to the receptor for N-methyl-D-aspartate (NMDA) and inhibits the ion channel. It has been used as a research tool to study NMDA receptor interactions, as well as in cell biology and pharmacology. Boc-Leu-Gly-Arg-AMC is a high purity, ionic analog of glutamate that binds to the NMDA receptor without activating it, thereby inhibiting ion flow through the channel. This inhibition can be reversed by adding excess glutamate or glycine. The binding of this compound to the NMDA receptor has been shown to block activation of voltage gated calcium channels and reduce neuronal excitation, which may provide an alternative therapeutic strategy for controlling seizures or other neurological disorders.

2-NBDG is a fluorescent dye that exhibits high affinity for nucleic acid and protein. It has been used as an inhibitor of protein interactions, activator of ligands, and research tool in the study of ion channels. 2-NBDG has also been used as an antibody to identify receptors, and can be used to measure the concentration of proteins, lipids, and carbohydrates. 2-NBDG is listed by CAS No. 186689-07-6.

Dnp-Gln-Gly-Ile-Ala-Gly-Gln-D-Arg is a peptide that has been shown to be an inhibitor of protein interactions. It has been shown to activate the G protein and inhibit the enzyme phospholipase C, which may provide a potential treatment for Alzheimer's Disease. Dnp-Gln-Gly-Ile-Ala-Gly-Gln-D-Arg also has a high purity and is used as a research tool in life science.

FRETS-25Gln is a peptide that can be used as a research tool in the fields of pharmacology and protein interactions. FRETS-25Gln binds to ion channels and activates them, which makes it useful for researching ligand-receptor interactions. The peptide has been shown to bind to the receptor P2X7 and activate the receptor, which may be useful for treating various diseases including arthritis and cancer. FRETS-25Gln also binds to the receptor P2Y1 and inhibits its activity, which may be useful for studying how activation of this receptor leads to increased vascular permeability.

Carboxyl-dPEG®4-(m-dPEG®24)3 is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. Carboxyl-dPEG®4-(m-dPEG®24)3 is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

(Z-Leu-Leu-NHCH2)2CO is a research tool that activates the receptor. It is a ligand which binds to the receptor and can be used as an inhibitor of ion channels or as a reagent for protein interactions. The molecular weight is 584.8 g/mol and the chemical formula is C10H16N4O3. (Z-Leu-Leu-NHCH2)2CO has been shown to bind to antibodies, ion channels, and cell biology. This product has high purity and can be used in pharmacology, peptides, and life science research.

Bz-DL-Arg-pNA • HCl [DL-BAPA] is a trypsin and trypsin-like protease substrate. It is used as a tool in biochemical studies to investigate the degradation of proteins by these enzymes. Bz-DL-Arg-pNA • HCl [DL-BAPA] is also used as an experimental model for diseases that affect enzyme activity, such as rheumatoid arthritis and multiple sclerosis.

Methionine-Enkephalin (ME) is a peptide that has been shown to bind to the opioid receptor and inhibit the production of pro-inflammatory cytokines. ME has been shown to have an inhibitory effect on human liver cells, as well as on cultured human epidermal cells. ME may also have a role in epidermal growth factor receptors, which could be related to its anti-inflammatory effects.

Amino-dPEG®6-acid is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. Amino-dPEG®6-acid is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

m-dPEG®4-OH is a PEG polymer categorised as monofunctional (OH-PEG-X). Used as a linker, m-dPEG®4-OH is used to attached PEG to proteins, peptides, oligonucleotides, nanoparticles and small molecules via pegylation, a bioconjugation technique.

Xenin-25 is a peptide that is an activator of ion channels. It is used as a research tool and in antibody production to study the binding of antibodies to their receptors. Xenin-25 can be used to inhibit protein interactions, such as receptor-ligand or enzyme-substrate interactions. It has been shown to have pharmacological effects on ligand binding and ion channel activation, which may be due to its ability to bind to proteins with high affinity and specificity.

NHS-dPEG®4-Biotin is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. NHS-dPEG®4-Biotin is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

2-Deoxy-2-Phthalimido-3,4,6-Tri-O-Acetyl-α-D-Galactopyranosyl Fluoride is a glycosyl. It is a building block for the synthesis of peptides and other biochemicals. This compound is used in the preparation of fluorinated analogs of carbohydrates and glycosides to study their properties. 2DGTF has been shown to inhibit the activity of many enzymes, including DNA polymerase, topoisomerase II, protein kinase C, phospholipase A2, mitochondrial ATP synthase and proteases.

E-64 is a research tool that is used to study protein interactions. It has been shown to inhibit ion channels, such as the nicotinic acetylcholine receptor and the voltage-gated calcium channel. E-64 binds to receptors in the cell membrane, blocking ion channels and altering intracellular signaling pathways. E-64 has been shown to inhibit nitric oxide synthase, which may account for its anti-inflammatory properties. E-64 also inhibits an enzyme called protein tyrosine phosphatase 1B (PTP1B), which is involved in insulin resistance and type 2 diabetes mellitus.

Amyloid beta (Aβ) is a peptide that is associated with the development of Alzheimer's disease. It is used as a research tool in cell biology, pharmacology and neuroscience. Amyloid beta-protein has been shown to activate certain receptors on the surface of cells, including ion channels. This protein also binds to antibodies that are specific for Aβ and can be used in immunohistochemistry experiments.

sold as the HCl salt

Adjuvant Peptide is a glycol ether that has been shown to have biological properties. It is used in the production of Immunoassays and other biochemicals. Adjuvant Peptide is an experimental model for immunity, as it stimulates cellular responses and alters the immune system's response to antigens. It shows potential for use in treating bowel diseases, such as ulcerative colitis, because of its ability to stimulate macrophage activity and induce cytokine production.

MAL-dPEG®6-NHS Ester is a PEG compound with two different functional groups (also known as heterobifunctional). Unlike homobifunctional PEG compounds (same functional group on both ends), this type of compounds are more versatile as have two different anchor points. MAL-dPEG®6-NHS Ester is used as a linker and spacer to add a PEG moiety, via pegylation (a bioconjugation technique) to proteins, peptides, oligonucleotides, small molecules and nanoparticles.

Cyclo(Thr-Pro) is a flavonol glycoside that has been shown to have neuroprotective activity. Cyclo(Thr-Pro) binds to the mitochondrial membrane potential, which is important in the regulation of the cell's life and death. Cyclo(Thr-Pro) has also been shown to inhibit tumor growth and induce apoptosis in cancer cells. Cyclo(Thr-Pro) has been shown to be reactive with gamma-aminobutyric acid (GABA), an inhibitor of neurotransmitter release from neurons, which may contribute to its anti-inflammatory properties. Cyclo(Thr-Pro) is found in the genus Fusarium, and its natural compounds profile includes caffeine.

Des-Pro2-Bradykinin is a synthetic peptide that has been shown to be an activator of ion channels, which are proteins that regulate the flow of ions across the cell membrane. Des-Pro2-Bradykinin can also inhibit the binding of ligands (e.g., neurotransmitters) to their receptors and can activate certain G protein coupled receptors. The inhibition of these interactions may have therapeutic potential for a variety of disorders, including pain and inflammation. Des-Pro2-Bradykinin is also an inhibitor of protein interactions with antibodies or ligands and is a pharmacological tool for research in cell biology, pharmacology, and life science.

Z-Gly-Leu-NH2 is a peptide that has been shown to have specificities against the bacteria Staphylococcus. It was obtained by the synthesis of a synthetic peptide with a sequence corresponding to the amino acid sequence of casein, which is a protein found in milk. The peptide contains four amino acids and has been shown to induce cytopathic effect in staphylococci, which are rod-shaped bacteria. This peptide also has high thermostability, which means it can be heated up to 100°C for 10 minutes without changing its activity. Z-Gly-Leu-NH2 is stable at pH 5 and is resistant to proteolytic degradation by subtilisin, making it an ideal candidate for use as a food additive.

Tyrosyl-Bradykinin is a peptide that is used as a research tool. It can activate an antibody or receptor and is used in the study of protein interactions. Tyrosyl-Bradykinin has been shown to be an inhibitor of ion channels and can block the activity of ligands and receptors. This peptide has also shown pharmacological properties, such as preventing platelet aggregation and inhibiting the release of histamine from mast cells.