Peptidi

An inhibitor of E2F1 and 3a transcription, with a D substituted arginine which confers resistance to proteolysis after pre-incubation in serum. Cytotoxic to several malignant cell lines and human prostate and small cell lung cancer xenografts.

The activation of transient receptor potential cation channel subfamily V member 1 (TRPV1) is believed to play a role in hyperalgesia, asthma, and hypertension. TRPV1 is important for neuronal pain detection as well as the detection of heat, capsaicin, protons, and the neurotransmitter anandamide.- The scaffold protein AKAP79 targets kinases to phosphorylate TRPV1, however it has been shown that inflammatory intermediates prostaglandin-E2 or bradykinin can activate these kinases creating a route for inflammation to cause hyperalgesia.This product is composed of the TRPV1 interacting residues of AKAP79 reordered into a scrambled sequence and conjugated to the cell penetrating TAT domain at the N-terminus. This product was shown in vivo to have a potent analgesic affect due to interaction with TRPV1 but not affect the pain threshold. This product is a vital tool for research into suitable TRPV1 antagonists.

Peptide H-NINNN-NHMe is a Research Peptide with significant interest within the field academic and medical research. This peptide is available for purchase at Cymit Quimica in multiple sizes and with a specification of your choice.

Nef is an accessory protein highly conserved amongst all primate lentiviruses, it is essential for viral replication in vivo- it is expressed by human immunodeficiency virus (HIV) HIV-1 and HIV-2. Nef acts as a downregulator of class I human leukocyte antigens (HLA) expression in HIV-infected cells to help circumvent the immune response, such as cytotoxic T lymphocytes (CTL) activity. An intact nef gene is critical for high viral loads, linked to development of acquired immunodeficiency syndrome (AIDS). Certain alleles of HLA have been associated with maintaining a seronegative status such as HLA-A*1101. This nef peptide sequence (75-82) was crystallised within the class I B allele HLA B*3501 suggesting an importance of key residues required for HLA interaction resulting in a nonstandard conformational binding.

[β-Ala]-[Lys(5-TAMRA)]-acid

The renin angiotensin system (RAS) consists of many angiotensin peptides involved in regulating functions such as blood pressure, cardiovascular function and energy balance. RAS activity is elevated in obesity and RAS is widely studied in relation to lifestyle-related diseases.Angiotensin 1-7 (Ang-(1-7)) is a component of the RAS. Ang-(1-7) is produced by angiotensin-converting enzyme 2 (ACE2), from the angiotensin II (Ang-II) peptide, as well as by prolylendopeptidase (PEP) and neutral endopeptidase (NEP) which produce Ang1 7 directly from angiotensin I (Ang-I).Ang-(1-7) broadly opposes Ang-II actions. Ang-(1-7) has vasodilatory and anti-oxidative effects, and exerts protective actions in hypertension, diabetes, and other cardiovascular disorders, Ang-(1-7) therefore represents a promising therapeutic target for cardiovascular and metabolic diseases. Ang (1-7) exerts its actions via its G-protein-coupled receptor, Mas. This novel arm of the RAS has effects that counterbalance those mediated by the classical ACE/Ang-II pathway.The C-terminal proline fro this peptide is in the D enantiomer.

Galanin is a neuropeptide synthesised and released by the brainstem locus coeruleus (LC). Galanin is expressed in most LC neurons in rodents and humans. Galanin has been shown to inhibit LC activity by hyperpolarising LC neurons, suppressing their spontaneous firing rate, and enhancing alpha2-adrenergic receptor-mediated negative feedback. Galanin is also a potent trophic and neuroprotective factor throughout the nervous system.Galanin is widely distributed from the central nervous, peripheral, and endocrine systems. Galanin's overarching function is as an inhibitory, hyper-polarizing neuromodulator for classical neurotransmitters like acetylcholine and serotonin. Galanin interacts with 3 receptor subtypes, GalR1-3 G protein-coupled receptors  which are inserted into the plasma membrane. GalR1 is believed to activate a Gβγ pathway to regulate MAPK activation. GalR2 can also activate the MAPK pathway, but unlike GalR1, there is detectable inositol phosphate production. GalR3 is associated with the Galphai/o pathway. Activation of the receptor leads to a cellular influx of K+. Each receptor has been associated with neurological diseases such as GalR3 and epilepsy.Some N-terminal fragments naturally occur in vivo but their relevance is unclear. The physiological relevance of the galanin fragment (2-12) and its affinity to the various GalR receptors has yet to be made clear. Binding assays and displacement assays in rat brain tissue have been performed with similar N-terminal galanin fragments to try and elucidate their function. . The use of N-terminal fragments such as galanin (2-12) can help clarify the function of full-length galanin. This may highlight new agonists/antagonists for the galanin GalR receptors that can be putative therapeutic targets for treatments of conditions such as cardiovascular disease.NMR has used this galanin fragment (2-12) to help characterise the structure of galanin. It shows the critical residues Tyr(9), Leu(10), and Leu(11) for interaction with the galR receptors. They cluster together as collapsed hydrophobic residues irrelevant to forming higher-order structures.

PTH 1-34, is a biologically active peptide fragment of parathyroid hormone (PTH). PHT 1-34 has been shown to enhance bone fracture healing by promoting osteogenesis. PTH 1-34 also has chondrogenic properties.PTH is an 84-amino-acid polypeptide hormone (PTH 1-84) which is secreted by the parathyroid glands along with its fragments (such as PTH 1-34 and PTH 7-84). PTH increases calcium and decrease phosphate levels in the blood and the abundance of PTH-derived peptides is regulated by blood calcium levels. PTH inhibits the bone growth-promoting activity of osteoblasts and induces osteoclasts to resorb bone and release calcium and phosphate ions into the blood. PTH binds to and activates the receptor parathyroid hormone receptor 1 (PTHR1). PTHR1 is a G-protein-coupled receptor (GPCR) which regulates mineral ion homeostasis, bone turnover and skeletal development.It contains 5-Carboxyfluorescein (5-FAM), a widely used green fluorescent tag.

Peptide H-NSSFNPAALSR^-OH is a Research Peptide with significant interest within the field academic and medical research. This peptide is available for purchase at Cymit Quimica in multiple sizes and with a specification of your choice.

Translation elongation factor thermo unstable (EF-Tu), is a highly conserved protein in bacteria which is essential for the synthesis of new proteins through translation in the ribosome. EF-Tu is also a pathogen-associated molecular pattern (PAMP) protein. PAMPs are elicitors of plant defences and are recognised by pattern recognition receptors in the plant. In Arabidopsis thaliana EF-Tu is recognised by EF-Tu Receptor (EFR), a leucine-rich repeat-receptor kinase XII family member.Elf18 represents the N-terminal of EF-Tu, the region specifically recognised by Arabidopsis. This N-acetylated peptide is a strong inducer of plant defence responses and results in the biosynthesis of ethylene in leaves which triggers resistance to subsequent infection by pathogenic bacteria.

Cilengitide is a new chemotherapeutic agent that was shown to be effective against renal cell cancer in vitro. Cilengitide inhibits the polymerase chain reaction, arresting the growth of cells. It has minimal toxicity and natural compounds, which make it a promising drug for the treatment of human cancers. Cilengitide binds to integrin receptors on malignant brain cells and inhibits their ability to migrate, inducing apoptosis. This drug also inhibits the production of chemoattractant protein and can be used as an adjuvant therapy for radiation and antibiotic-resistant strains of bacteria.

Leptin is a member of the adipocytokines or adipokines group of cytokines primarily produced in adipose tissue. Leptin is a hormone involved in multiple endocrine functions, bone metabolism and thermoregulation, and a cytokine promoting inflammatory responses. There are elevated levels of leptin found in people with obesity. This contributes to the state of low-grade inflammation that makes those individuals more likely to develop cardiovascular diseases, type II diabetes, degenerative disease and autoimmune disease. Reduced levels of leptin, found in malnourished individuals, have been linked to an increased risk of infection and reduced cell-mediated immunity.Leptin binds to leptin receptors (ObRs), of which there are at least six isoforms (ObRa, ObRb, ObRc, ObRd, ObRe, and ObRf). Leptin-related analogs such as (93-105) fragment can mimic the interaction and activation of the ObR to improve their anti-obesity effects. Peptide vectors with a linker to a leptin fragment were patented as new leptin agonists with an improved permeability through the blood-brain barrier. Administration of leptin or leptin (93-105) to rats was shown to raise the blood levels of aldosterone and corticosterone. The use of the (93-105) fragment has allowed a better understanding of full-length leptin and its function in its various roles.

Custom research peptide; min purity 95%. For different specs please use the Peptide Quote Tool

The native form of GLP-1 in humans is the GLP-1 (7-36) amide. GLP-1 (7-36) amide is highly unstable (half-life <-2 minutes) due to proteolytic degradation by the serine protease, dipeptidyl peptidase-IV (DPP-IV). DPP-IV cleaves the N-terminal histidine and alanine residues from GLP-1 to generate two equipotent forms: GLP-1 (9-37) and GLP-1 (9-36) amide. This degradation mitigates against the therapeutic use of GLP-1 itself, therefore DPP-IV-resistant peptide analogues have been developed and licensed for clinical use.Contains a sulfo-Cyanine5 fluorescent dye, an analogy of Cy5® and one of the most popular fluorophores. Sulfo-Cyanine5  is a red emitting fluorescent dye which is highly hydrophilic and water-soluble. Compatible with various equipment such as plate readers, microscopes, and imagers.