Peptidi
I peptidi sono catene corte di amminoacidi legate da legami peptidici, che svolgono ruoli chiave come molecole biologiche importanti nei processi cellulari. Funzionano come ormoni, neurotrasmettitori e molecole di segnalazione, e sono ampiamente utilizzati in applicazioni terapeutiche e diagnostiche. I peptidi sono anche cruciali nella ricerca per lo studio delle interazioni proteiche, delle attività enzimatiche e dei percorsi di segnalazione cellulare. Presso CymitQuimica, offriamo una vasta selezione di peptidi di alta qualità per supportare le vostre esigenze di ricerca e sviluppo in biotecnologia e farmacologia.
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SARS-CoV-2 NSP13 (226-240)
The SARS-CoV-2 non-structural protein 13 (NSP13) has been identified as a target for anti-viral therapeutics due to its highly conserved sequence and is essential for viral replication. NSP13 is part of the helicase superfamily 1B. As an NTPase and RNA helicase, NSP13 binds to RNA-dependent RNA polymerase and acts in concert with the replication-transcription complex to stimulate backtracking and further activate NSP13 helicase activity. These factors make NSP13 a good target for developing new antiviral drugs. In addition, the identification of epitopes within the NSP13 sequence can help design more effective SARS-CoV-2 vaccines.Models have predicted epitopes exhibiting antigenicity, stability and interactions with MHC class-I and class-II molecules. NSP13 (226-240) is an epitope candidate with various HLA restrictions. This epitope can be used to better vaccine design for more durable CD4+ and CD8+ T cell responses for long-lasting immunity.Peso molecolare:1,565.9 g/molPep - 1: Chariot
Pep-1 is a synthetic cell-penetrating peptide (CPP), and has been successfully used to deliver a variety of proteins and other biopharmaceutical macromolecules into cells in a non-disruptive manner. It is a CPP with primary amphipathicity, which results from its amino acid sequence as opposed to its folding structure. The primary structure of Pep-1: Chariot comprises three main domains: a tryptophan-rich, hydrophobic domain, and a hydrophilic domain derived from an NLS (nuclear localisation signal) of SV40 (simian virus 40) large T-antigen, and a spacer.
Colore e forma:PowderPeso molecolare:2,846.5 g/mol[Pyr]-Apelin-13
CAS:[Pyr1]-Apelin-13 acts as a ligand for the apelin receptor (APJ) G protein-coupled receptor and is a substrate for angiotensin-converting enzyme 2. Apelin is a member of the adipokine hormone family from adipose tissue. Adipokines are involved in processes such as vascular homeostasis and angiogenesis.Apelin and the apelin receptor are widely distributed throughout the body. Apelin is associated with cardiovascular diseases, obesity, diabetes and cancer. Apelin is expressed in the spinal cord and the human brain. Immunohistochemistry shows that apelin-17 is significantly expressed in the human heart, brain, lungs and endothelial cells. Studies show myocardial infarction apelin mRNA expression is greater during human heart failure than in healthy tissue. Apelin protects against heart failure due to the pyroglutamic form of apelin, [Pyr1]-Apelin-13, which decreases infarct size of myocardial infarctions. Furthermore, rats with hypertension have reduced levels of apelin and APJ. [Pyr1]-Apelin-13 exhibits higher APJ agonist potency than Apelin-13. We also have the alternative available.Formula:C69H108N22O16SColore e forma:PowderPeso molecolare:1,533.8 g/mol[5-FAM] EGFR/kinKDR peptide substrate
Peptide substrate of the epidermal growth factor receptor (EGFR), a member of the receptor tyrosine kinase family known as ErbBs or HER receptors. These receptors are involved in the regulation of cell proliferation, survival, differentiation and migration. When these receptors are dysregulated many diseases, including cancer, can arise.Binding to the ligand binding domain of the EGFR causes receptor dimerization. This is sequentially followed by the tyrosine kinase domain being activated and the tyrosine residues on the C-terminal tail of the receptor becoming phosphorylated, activating downstream signalling pathways.This peptide contains an N-terminal 5-Carboxyfluorescein (5-FAM) moiety, a widely used green fluorescent tag.Peso molecolare:1,978.9 g/molGRP (18-27) (human, porcine, canine)
Mammalian bombesin-like neuropeptide first isolated from pig spinal cord, which can stimulate rat uterine smooth muscle contraction and gastrin and somatostatin secretion in vitro. Increases blood pressure and pancreatic exocrine secretion in dogs.Colore e forma:PowderPeso molecolare:1,119.5 g/molInfluenza Virus Nucleoprotein (311 - 325)
The Influenza Virus Nucleoprotein (311 - 325) is a component of the viral ribonucleotide complex, derived from the influenza virus and it is involved in viral replication, RNA packing and nuclear trafficking. As a monomer it contains basic residues which allow it to bind to single stranded RNA and through its flexible tail loop it has the ability to form NP oligomers.Furthermore NP is able to support the viral polymerase structurally, through associating with the two subunits PB1 and PB2, and it allows the viral ribonucleotide complex to be transported in and out of the nucleus due to its nuclear localisation and nuclear export signals.During influenza viral replication messenger RNA, viral genome RNA and complementary positive-sense RNA are produced and NP is crucial for this replication.Inhibitors of NP have potential to be used to prevent the influenza virus in humans.Peso molecolare:1,764.9 g/molHp1404
Antimicrobial peptides (AMP) are proving a lucrative area for antibiotics in the era of bacterial resistance. Of note, the scorpion Heterometrus petersii was found to produce Hp1404, an amphipathic cationic peptide with specific activity against Gram-positive bacteria- Hp1404 was shown to be effective against methicillin-resistant Staphylococcus aureus (MRSA). The mode of action is by membrane penetration and disruption. MRSA did not gain resistance after several exposures to Hp1404 suggesting it may be a key agent against the rise of antibiotic resistance. Importantly, bacterial lethality was maintained with low toxicity to mammalian cells. Hp1404 is being used to generate analogues with reduced toxicity to mammalian cells and improved antimicrobial potency against a wider range of organisms.Colore e forma:PowderPeso molecolare:1,544.9 g/molFREG peptide
PDGF-Ra agonist with in vitro and in vivo antimelanoma growth activity.
Peso molecolare:1,290.7 g/mol[β-Ala]-[Lys(AMCA)]-acid
[β-Ala]-[Lys(AMCA)]-acid.
Colore e forma:PowderPeso molecolare:432.2 g/molClick Tat (47-59)
Tat (47-59) is a cell penetrating cationic peptide derived from the N-terminus of the Tat protein, which is a trans-activator of the transcription protein present in the human immunodeficiency virus (HIV). Specifically, TAT (47-57) is located within the arginine-rich basic domain of the TAT peptide. TAT has three domains which function to aid HIV through transactivation, DNA binding and nuclear transport. As a cell penetrating peptide (CPP) TAT aids in the cellular uptake of molecules and hence serves a valuable purpose in transduction methods. This property has been demonstrated through its ability of allowing toxins such as the neurotoxin Botulinum neurotoxin Type A, produced by the Clostridium botulinum type A bacteria to penetrate the skin barrier non-invasively.Tat (47-59) is provided here with a N-terminal alkyne attachment. Two of the most regularly encountered functional groups for click chemistry are azides and alkynes, and the azide-alkyne cycloaddition has become the most popular click reaction. The use of click chemistry with alkyne-Tat (47-59) allows a wide variety of applications particularly for conjugation, modification, and peptide design.Colore e forma:PowderPeso molecolare:1,797.1 g/molLeuprolide Acetate
Leuprolide acetate is a synthetic peptide analogue of naturally occurring gonadotropin releasing hormone (GnRH also known as luteinising hormone-releasing hormone, LHRH). Leuprolide Acetate has a longer half-life and a higher affinity to the pituitary GnRH-receptor than physiological GnRH due to the presence of a D-amino acid. Leuprolide acts as a super-agonist of the pituitary gonadotropin-releasing hormone (GnRH) receptor in the hypothalamo-pituitary-gonadal axis and disrupts the maintenance of the normal hypothalamo-pituitary-gonadal axis and desensitizes the GnRH receptor. This results in lower levels of testosterone in the blood. Leuprolide is used to treat prostate cancer, endometriosis, fibroids and precocious puberty. Peptide is for research purposes only, strictly not for human use.Peso molecolare:1,208.6 g/molβ-Amyloid (1-6)-GGC Human
Amino acids 1-6 of amyloid β peptide (Aβ). This fragment represents an immunogenic portion of Aβ which has been used as the basis for potential immunotherapies for Alzheimer's disease. Aβ has been identified as the key subunit of the extracellular plaques found in the brains of patients with Alzheimer's disease (AD) and Down's syndrome (DS). Aβ has therefore been extensively studied as a potential target for treatment of AD. Aβ is formed from the cleavage of the large, transmembrane protein- APP (amyloid precursor protein). Cleavage of APP by β- and then γ-secretases results in the formation of Aβ. Aβ can aggregate to produce amyloid-β oligomers, which are thought to be highly neurotoxic. Over time Aβ can further aggregate to produce the characteristic senile plaques present in AD and DS. Aβ can be degraded by enzymes such as neprilysin, insulin degrading enzyme or endothelin converting enzyme. At physiological levels Aβ may be involved in controlling synaptic activity and neuronal survival.Contains a GGC linker, the thiol on the Cysteine can be used for conjugation to dyes and other molecules.Colore e forma:PowderPeso molecolare:990.4 g/molGIP (1-30) Human amide
GIP (1-30) Human amide is derived from the Gastric inhibitory peptide (GIP). Gastric inhibitory polypeptide (GIP) is an inhibiting hormone of the secretin family of hormones. While GIP is a weak inhibitor of gastric acid secretion, its main role is to stimulate insulin secretion - in a glucose-dependent mechanism. Therefore, GIP is referred to as a glucose-dependent insulinotropic peptide.GIP is derived from a 153-amino acid pro-protein encoded by the GIP gene. It is synthesised by K cells, which are found in the mucosa of the duodenum and the jejunum of the gastrointestinal tract. GIP receptors are seven-transmembrane proteins found on β-cells in the pancreas. These β-cells are those that are able to simultaneously detect glucose and release insulin as a result to GIP binding.The clinical relevance of GIP is related to type 2 diabetes mellitus (T2DM)- studies have found that T2DM diabetics are unresponsive to GIP and have lower levels of GIP secretion after a meal when compared to non-diabetics. In research involving knockout mice, it was found that absence of the GIP receptors correlates with resistance to obesity.
Colore e forma:PowderPeso molecolare:3,531.99 g/molSARS-CoV-2 Nucleoprotein (266-280)
The coronavirus (CoV) nucleoprotein is the major component of CoV structural proteins. Also known as the nucleocapsid protein, it is an abundant RNA-binding protein critical for viral genome packaging. These factors make nucleoprotein a good target for developing new antiviral drugs. In addition, the identification of epitopes within the nucleoprotein sequence can help design more effective SARS-CoV-2 vaccines.Models have predicted epitopes exhibiting antigenicity, stability and interactions with MHC class-I and class-II molecules. Nucleoprotein (266-280) is an epitope candidate with various HLA restrictions. This epitope can be used to better vaccine design for more durable CD4+ and CD8+ T cell responses for long-lasting immunity.Peso molecolare:1,692.9 g/molGLP-1 (7-36) [Cys(Sulfocyanine5)]
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.Colore e forma:PowderPeso molecolare:4,162.9 g/molLeptin (93 - 105) Human
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.Colore e forma:PowderPeso molecolare:1,526.8 g/molRKOpep
Peptide identified through phage display that binds to colorectal cancer cell line RKO cells, as well as other cancer cells including Caco-2, HCT 116 and HCT-15, but not to normal cells, possibly through targeting the monocarboxylate transporter 1, which has been implicated in colorectal cancer progression and prognosis.
Peso molecolare:920.4 g/molElf18
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.Colore e forma:PowderPeso molecolare:2,068.1 g/mol[5-FAM]-PTH (1-34)
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.Colore e forma:PowderPeso molecolare:4,473.2 g/molGalanin (2-12) acid
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.Peso molecolare:1,193.6 g/mol(D-Pro7)-Angiotensin I/II (1-7)
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.Colore e forma:PowderPeso molecolare:898.5 g/molD-Arg PEP
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.α-Casozepine
CAS:Alpha-Casozepine (alpha-CZP) is a tryptic hydrolysate of bovine milk alphas1-casein. The presence of bile salts facilitates alpha-CZP absorption through a Caco2 monolayer. alpha-CZP shows similarities to benzodiazepines with its anxiolytic-like activity but lack the common side effects of habituation or sedation. alpha-CZP binds to the GABAA receptor at the benzodiazepine site. alpha-CZP binds with a significantly lower affinity than benzodiazepines.Intraperitoneal administration of Alpha-Casozepine (alpha-CZP) to rodents results in anticonvulsant and sleep-protecting effects. Human administration reduces physiological stress symptoms in stressed and control patients. alpha-CZP modulated neuronal activity in brain regions linked to anxiety regulation in mice.Formula:C60H94N14O16Peso molecolare:1,267.47 g/molGRGD-[Cys(AF647)]
GRGD-acid is a cell adhesive peptide containing the RGD motif. This enables it the ability to increase cell adhesion and rates of cell growth, differentiation and proliferation.When immobilised onto a Poly(etheretherketone) (PEEK) surface it has been shown to increase cell adhesion and proliferation in MC3T3-E1 cells. GRGD could therefore be used in dental implants.This peptide contains a C-terminal Alexa Fluor 647 florescent dye. A cysteine residue has been added to the C-terminus for conjugation of the dye via the cysteine thiol moiety. AF647 is a bright, far-red-fluorescent dye with excitation between 594 nm and 633 nm, and is pH-insensitive over a wide molar range.Colore e forma:PowderPeso molecolare:1,486.2 g/molGS dipeptide
Dipeptide consisting of one glycine and one serine residue with diverse uses. Primary metabolite and bronsted base, forms a complex with Cu(II) acting as a tridentate ligand.Primary metabolites are metabolically or physiologically essential and are directly involved in an organism's development, growth, or reproduction.Peso molecolare:162.1 g/molAc-GPLD-[Rh110]-[D-Pro]
Fluorogenic substrate peptide to assay the caspase-like peptidic activity of the 20S proteasome. In its intact state this peptide is non-fluorescent, however when the Rhodamine fluorophore is released upon hydrolysation, fluorescence can be detected. This peptide is therefore a useful tool for analysing enzyme activity.The presence of the D-proline residue on the C terminal of the rhodamine molecule ensures one directional rhodamine cleavage which simplifies fluorescence studies. Rhodamine 110 is a laser grade fluorescent dye with excitation maxima at 496 nm and emission maxima at 522 nm.Peso molecolare:851.3 g/molCMX-8933
The CMX-8933 peptide is a fragment of the goldfish brain neurotrophic factor ependymin which can increases the enzymatic activity of c-Jun N-terminal kinase (JNK), increase the phosphorylation of JNK and c-Jun proteins, and increase cellular levels of c-Jun and c-Fos mRNAs.Peso molecolare:1,192.6 g/molβ-Amyloid (12-20)
Aβ has been identified as the key subunit of the extracellular plaques found in the brains of patients with Alzheimer's disease (AD) and Down's syndrome (DS). Aβ has therefore been extensively studied as a potential target for treatment of AD.Aβ is formed from the cleavage of the large, transmembrane protein- APP (amyloid precursor protein). Cleavage of APP by β- and then γ-secretases results in the formation of Aβ. Aβ can aggregate to produce amyloid-β oligomers, which are thought to be highly neurotoxic. Over time Aβ can further aggregate to produce the characteristic senile plaques present in AD and DS. Aβ can be degraded by enzymes such as neprilysin, insulin degrading enzyme or endothelin converting enzyme. At physiological levels Aβ may be involved in controlling synaptic activity and neuronal survival.Colore e forma:PowderPeso molecolare:1,153.6 g/molPalmitoyl GHK tripeptide
The GHK tripeptide has many attributes which can positively impact human health. GHK can improve tissue repair, exhibit anti-cancer and anti-inflammatory properties, suppress age related molecules and restore chronic obstructive pulmonary disease fibroblasts.The GHK tripeptide is found in the human plasma and binds copper. It exerts its effects through its ability to up regulate and downregulate 4,000 human genes. Due to its ability to protect and regenerate aspects of human health, GHK-Cu can be used in products for skin and hair.Specifically during skin regeneration GHK-Cu can promote the synthesis of collagen and glycosa-minoglycans, increase the rate of wound healing and the formation of blood vessels.A palmitoyl group is present on the N-terminus.Peso molecolare:578.4 g/molBAM (8-22)
BAM (8-22), the Bovine adrenal medulla 8-22 peptide is synthesised from proekephalin after it has undergone proteolytic cleavage. It can induce what is known as the 'itching' or 'scratching' response through activating, using an opioid independent mechanism, the G-protein coupled receptor MRGPRX1. This subsequently activates the Gαq/11 pathway and the cation channel TRPA1 histamine independent itch pathways.It is believed that BAM 8-22 can contribute to chronic itching in diseases such as cholestasis-related pruritus, in which patients are commonly diagnosed as having a reduction in bile flow.Peso molecolare:1,971.2 g/molBiotin HER-2 substrate peptide
Human epidermal growth factor receptor (HER-2)/epidermal growth factor receptor-2 (ErbB-2), is a key receptor linked to metastasis in tumours. The oncogenic ErbB-2 receptor has intrinsic receptor tyrosine kinase (RTK) activity, the receptor is activated by ligand binding which induces receptor dimerization. These RTK complexes can activate mitogen-activated protein kinase (MAPK) and phosphoinositol 3-kinase (PI3K)/Akt pathways. This peptide has been identified as a substrate for HER-2/ErbB-2 as it is phosphorylated upon receptor activation and therefore acts as a marker for receptor activation in kinases assays. Contains a covalently attached N-terminal biotin tag for convenient detection and purification.Peso molecolare:2,062.44 g/molBiotin-aMp3
Biotinylated aMp3 is a Mycobacterium avium subsp. Paratuberculosis (MAP) specific ligand. MAP can cause Johne disease (the wasting disease) in livestock. It is important therefore to detect the presence of MAP in animal milk and faeces.Biotinylated aMp3 can be used (along with aMptD peptides) to detect the viability of MAP cells in infected livestock through combined peptide-mediated magnetic separation phage display due to their high affinity for MAP. The addition of biotin to aMp3 asparagine residue, changes the orientation of aMp3 so that it can bind to the target bacteria with increased stability, thus achieving a high capture efficiency. A similar effect is observed on the addition of biotin to aMptD glycine residue.Peso molecolare:1,642.8 g/mol[Rhodamine Green]-LifeAct (Abp140 1-17)
[Rhodamine Green]-LifeAct (Abp140 1-17) contains the 17amino acid peptide Lifeact derived from amino acids 1-17 of the Saccharomyces cerevisiae actin binding protein, Abp140. These first 17 amino acids of Abp140 are crucial in allowing Lifeact to localise to actin filaments (F-actin) and therefore it can be used as a cytoskeletal marker. On application, lifeact can be used in the study of plant development and pathogen defence as filamentous actin within the plant actin cytoskeleton is important in key processes such as cell division, membrane trafficking and stomatal movements.The addition of the Rhodamine Green fluorophore, Rhodamine Green allows the location of the LifeAct (Abp140 1-17) to be detected.Peso molecolare:2,279.1 g/molacfTAT
TAT contains a protein transduction domain which allows it to enter cells by crossing the cell membrane. The amino acid sequence of the protein transduction domain (PTD) and this property confers cell penetrating peptide properties on TAT and derivatives. TAT peptides have been widely used to deliver functional biomolecules into cells both in vitro and in vivo. The entire protein can be used but in practice it is more efficient to use truncated sequences containing only the basic residues required for transport. Through covalent attachment to TAT derived peptides, cargo molecules including proteins, nucleic acids, small molecules, oligonucleotides, enzymes, polymers, plasmid DNA and liposomes can be transported into cells with high efficiency.acfTAT is a fusion of the TAT PTD to a red fluorescent tag (TAMRA) at the carboxy terminal. This peptide is ideal for live cell localisation work using fluorescent microscopy as the TAT PTD can transduce small peptides into the cell efficiently without affecting the cell. Additionally, the fluorescent label is highly stable against photo bleaching and should be easily detectable under various excitation sources including mercury, arc, tungsten, and xenon lamps.Peso molecolare:2,095.2 g/molTAT (48-57)
Peptide derived from the HIV transactivator of transcription protein. TAT is a cationic cell-penetrating peptide.
Peso molecolare:1,396.66 g/molClick FBP
Cell penetrating peptides (CPPs) provide a delivery method for molecules across the membrane in an efficient manner without compromising the cell. FBP forms a sheet structure when interacting with a membrane forming a transmembranous pore. FBP, also known as Pβ, is rapidly internalised and localises primarily to the nucleus.FBP is provided here with a N-terminal alkyne attachment. Two of the most regularly encountered functional groups for click chemistry are azides and alkynes, and the azide-alkyne cycloaddition has become the most popular click reaction. The use of click chemistry with alkyne-FBP allows a wide variety of applications particularly for conjugation, modification, and peptide design.Colore e forma:PowderPeso molecolare:3,013.6 g/molApolipoprotein A-I (APOA1)(86-101)
Apolipoprotein A-I enables the efflux of fat molecules from within cells as high-density lipoprotein (HDL) particles for transport back into LDL particles or to the liver for excretion. HDLs are one of five major groups of lipoproteins.Increasing concentrations of HDL particles are strongly associated with decreasing accumulation of atherosclerosis within the walls of arteries. Apolipoprotein A-I is often used as a biomarker for prediction of cardiovascular diseases, such that low levels of APOA1 are associated with an increased risk of adverse events in patients with coronary artery disease. In such cases, APOA1 can be used as a biomarker to predict cardiovascular disease progression.Peso molecolare:1,930.9 g/molGalanin (2-13)-Biotin
Galanin is a widely distributed neuropeptide in the central nervous system, peripheral regions and endocrine system. Galanin has a role in energy homeostasis. Central injections of galanin to the amygdala led to food intake in rats. Galanin also acts in the CNS to inhibit neurotransmitter release, such as acetylcholine. Galanin has been implicated in numerous neurological conditions, including Alzheimer's disease, depression, and epilepsy.Galanin interacts with 3 receptor subtypes, GalR1-3 which are G protein-coupled receptors 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 potassium ions.The galanin active fragment (1-16) has been identified as a highly potent agonist for the galanin receptors. These have become a basis for galanin-based peptides, which are neuroactive. These are being investigated as a potential source for anticonvulsant neuropeptides as a therapeutic for conditions such as epilepsy. A library of galanin fragments has allowed screening of their properties to be assessed and used to generate chimeric peptides. Galanin fragments have different affinities for GalR receptors- however, the N-terminal (1-16) have been shown to have a conserved affinity for the receptors.The galanin fragment (2-13) provided here have a C-terminal biotin label for easy detection and purification. Cymit Quimica Laboratories Ltd is a custom peptide provider. If you desire an alternate tag, please contact us to request a custom synthesis.
Colore e forma:PowderPeso molecolare:1,558.8 g/molP17
Blocks the activity of TGFβ1 in vitro, as measured by its capacity to restore growth of Mv-1-Lu cells in the presence of added TGFβ1. Inhibits TGFβ1-dependent expression of collagen type I mRNA in the liver of mice orally insulted with CCl4.
Peso molecolare:1,994.1 g/molSteroid Receptor Coactivator-1 (SRC-1) (686-700)
There are three members of the p160 family of steroid receptor coactivators, SRC-1, SRC-2, and SRC-3. These steroid receptor coactivators control the functional output of numerous genetic programs and serve as pleiotropic rheostats for diverse physiological processes. Coactivator proteins interact with nuclear receptors in a ligand-dependent manner and augment transcription.Peso molecolare:1,770 g/molClick MAP
Cell penetrating peptides (CPP) are a useful tool for drug delivery, but their cell-specific uptake is still being improved. Work with the model amphipathic peptide (MAP) has been important in this field. CPP MAP is an amphipathic α-helix and has been well characterised for its ability to spontaneously permeate the cell membrane by interacting with the lipid bilayer. As a CPP, MAP causes increased membrane permeability and a degree of cell leakage. MAP is being extensively studied to optimise drug delivery in numerous cell lines with the target of creating a viable clinical method. Interestingly, the CPP function of MAP also provides it with bactericidal properties by effecting the membrane permeability. MAP is a potent antimicrobial peptide (AMP) against gram negative Neisseria meningitidis, the pathogen of meningococcal disease.MAP is provided here with a N-terminal alkyne attachment. Two of the most regularly encountered functional groups for click chemistry are azides and alkynes, and the azide-alkyne cycloaddition has become the most popular click reaction. The use of click chemistry with alkyne-MAP allows a wide variety of applications particularly for conjugation, modification, and peptide design.Colore e forma:PowderPeso molecolare:2,234.8 g/molHistatin-5
Histatins are histidine rich cationic peptides produced in salivary glands and released into the saliva. The main histatins that make up more than 80% of histatins in saliva are histatin 1, histatin 3 and histatin 5. There are two histatin genes, one which encodes histatin 1, and one that encodes histatin 3, all other histatins are derivatives of these two histatins. Histatin 3 is a precursor of histatin 5, each with distinct roles.Histatin 5 is considered an antimicrobial peptide (AMP) as it has antibacterial activity as has been shown against opportunist infections such as P. aeruginosa, E. coli, and S. aureus. Histatin 5 also has potent anticandidal activity for example against Candida and Leishmania, it is shown to be the strongest antifungal of the histatins. The antifungal activity functions by invasion of the microbe and entry to the mitochondria, histatin 5 then inhibits ATPase activity resulting in rapid depletion and ultimately bacterial cell death/apoptosis. As a salivary peptide, it inhibits Bacteroides gingivalis proteinase clostripain and protease activity microbe implicated in periodontal disease.Colore e forma:PowderPeso molecolare:3,036.29 g/molFluorescein HLA-A*02:01 HBV core (18-27)
HLA-A*02 is a class I major histocompatibility complex (MHC) allele which is part of the HLA-A group of human major histocompatibility complex (MHC) leukocyte antigens (HLA), found at the HLA-A locus. HLA-A is one of three major types of human MHC class I cell surface receptors. The receptor is a heterodimer, and is composed of a heavy alpha chain and smaller β chain. MHC Class I molecules such as HLA-A are part of a process that presents short polypeptides to the immune system. These polypeptides are typically 7-11 amino acids in length and originate from proteins being expressed by the cell. Cytotoxic T cells in the blood "read" the peptide presented by the complex and should only bind to non-self peptides. If binding occurs, a series of events is initiated culminating in cell death via apoptosis. This peptide corresponds to the Hepatitis B variant (HBV) core sequence which is presented on the MHC class I antigen HLA-A*02 and contains fluorescein, a widely used flourescent dye.
Peso molecolare:1,537.6 g/mol
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