Peptides

Peptide H-SFEDIHHYREQIK^-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.

<p>Pip6a is part of a novel series of transduction peptides termed Pips (PNA/PMO internalisation peptides). Pip peptides were designed around an original R6-penetratin cell penetrating peptide (CPP) and are able to transport PNA/PMO molecules across cell membranes. Pip peptides can be covalently conjugated to PNAs/PMOs to deliver them to a variety of adult tissues, including liver, kidney, skeletal muscle, diaphragm, and heart.Due to its ability to target the heart, pip6a has important implications for the development of therapeutic antisense oligonucleotide therapy using PMOs for diseases such as Duchenne muscular dystrophy (DMD). DMD causes progressive muscle weakening and often results in cardiac failure and death. Pip6a has also been studied for delivery of antisense oligonucleotide therapy in spinal muscular atrophy (SMA).</p>

<p>Substrate peptide for adenosine 3',5'-monophosphate (cyclic AMP)-dependent protein kinase (PKA) and related kinases, for use in kinase assays. The peptide sequence is based on the cAMP-dependent protein kinase inhibitor alpha (amino acid 15-23).Protein kinase A (PKA) also known as cAMP-dependent protein kinase is a family of serine/threonine protein kinase enzymes whose activity is regulated by cyclic AMP (cAMP). PKA is involved in a plethora of roles within the cell including: regulation of glycogen, sugar and lipid metabolism and roles within adipocytes and hepatocytes, nucleus accumbens neurons, skeletal muscle, cardiac muscle and in memory formation.</p>

<p>Plasma membrane calcium pumps (PMCA) play integral roles in calcium homeostasis and calcium signalling. There are four PMCA isoforms (1-4), their expression and localisation are varied amongst cell types and diseased tissue. Therefore, identification of specific inhibitors of each PMCA is underway to aid understanding of the individual roles the PMCAs play. Use of phage libraries and mutagenesis has allowed rapid screening of possible peptides. A PMCA inhibitor of importance found by screening and mutagenesis is caloxin 1C2. Caloxin 1C2 has been shown to have a 10 found higher affinity for PMCA4 than any other isoforms suggesting it is a suitable selective inhibitor for PMCA4 activity. The allosteric inhibitor is already being used in research to help understand the specific function of PMCA4 in tissues. Since changes in the levels of activity and expression of the PMCA isoforms have been linked to several conditions, such as hypertension and diabetes, clarifying the function of PMCA4 with the use of caloxin1C2 inhibitor could provide new treatments in the future.</p>

<p>The HLA-DRB1*1501 peptide, is encoded by the disease-associated MHC allele histocompatibility leukocyte antigen (HLA)-DRB1*1501 which is present on the MHC region of chromosome 6. The increased frequency of the HLA-DRB*11501 haplotype found in Multiple Sclerosis (MS) patients, may contribute to the MS phenotype through disrupting T cell repertoire selection and through the presentation of self-peptides which can be targeted by the body's autoimmune response. Moreover studies investigating the accumulation of amyloid β-peptide (Aβ) as a factor producing Alzheimer's disease (AD) pathogenicity, found that HLA-DR alleles such as DRB1*1501 demonstrate immunogenic properties. It is evident that the DRB1*1501 halotype is associated with strong Aβ-T cell responses resulting in the large production of IFN- γ and IL-17. Therefore the HLA-DRB1*1501 peptide would be beneficial in studies exploring the phenotypes of autoimmune-diseases like MS and AD.</p>

Peptide H-AVTLSLDGGDTAIR^-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.

<p>CHKtide is a synthetic peptide substrate for checkpoint-kinase-1 and 2 (CHK1/CHK2) as well as salt-inducible kinase (SIKs) for use in kinase assays. CHKtide has been derived from CDC25C which is phosphorylated by CHK1/CHK2 in one of the DNA repair pathways. SIKs are serine/threonine kinases that are part of a complex network that regulate sodium homeostasis and blood pressure.The serine residue at position 5 of this peptide has been phosphorylated.</p>

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

<p>Peptide H-ELAGIGILTV^-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.</p>

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

Peptide H-GAHWQFNAL^-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.

Peptide LCBiot-PPAHGVTSAPDTRPA-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.

<p>Peptide H-FLKEKGGL^-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.</p>

<p>Peptide H-KETAAAKFERQHMDS-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.</p>

<p>Peptide BrAc-THRPPMWSPVWP-NH2 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.</p>

<p>Peptide LCBiot-PKYVKQNTLKLAT-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.</p>

This C-terminal Sortagging peptide acts as an (oligo)glycine nucleophile in the final steps of a sortagging protein labelling reaction. This reaction results in the [Cys(AF680)]- fluorescent moiety being attached to the C-terminus of the target protein or peptide.A substrate peptide containing the LPXTG motif is recognised and cleaved by the enzyme Sortase A (SrtA) from Staphylococcus aureus. The catalytic cysteine residue in the active site of SrtA serves as a nucleophile to cleave the peptide bond between threonine and glycine of the substrate peptide. Cleavage results in the formation of a thioacyl intermediate between the substrate peptide and SrtA. This intermediate is then resolved by the N-terminus of this (oligo)glycine nucleophile peptide, resulting in the creation of a new peptide bond that links the substrate peptide to this peptide and its fluorescent dye.  This method of protein labelling is known as sortagging.C-Terminal Sortagging-[Cys(AF680)] contains the AF680 fluorescent dye- AF680 is a bright green dye with excitation at 633 nm, well suited for flow cytometry and imagery. AF680 is particularly photostable, allowing better detection of low abundance conjugates.  C-Terminal Sortagging-[Cys(AF680)] acid is provided here. However, the amide version is also available.

<p>Protease activated receptors (PARs) are a distinctive four-member family of seven transmembrane G protein-coupled receptors (GPCRs) widely expressed in inflammatory cells. PARs are cleaved by certain serine proteases to expose a tethered ligand domain, this ligand domain then binds to and activates the receptors to initiate multiple signalling cascades. These PAR-activating proteases therefore represent PAR agonists. This PAR-1 agonist peptide represents the sequence of the 'tethered ligand' and is therefore capable of activating the receptor independently of N-terminal proteolysis. TFLLR-NH2 is more selective to PAR-1 than the PAR-1 agonist SFLLRN-NH2.Activation of PAR-1 induces platelet aggregation and IL-6 release from monocytes and T cells, as well as several other cellular pathways including those involved in allergic inflammation, neurogenic inflammation and the potentiation of NMDA receptor activity in the hippocampus.</p>

Myelin oligodendrocyte glycoprotein (MOG) is a member of the immunoglobulin (Ig) protein superfamily and is expressed exclusively in the central nervous system on the surface of myelin sheaths and oligodendrocyte processes. MOG is expressed at the onset of myelination, and therefore is a potential marker for oligodendrocyte maturation.MOG contains an extracellular domain, a transmembrane domain, a cytoplasmic loop, a membrane-associated region and a cytoplasmic tail.  MOG may function as a cell surface receptor or cell adhesion molecule.  Fifteen different alternatively spliced isoforms have been detected in humans. These are present either on the cell surface, the endoplasmic reticulum in the endocytic system, or in secreted form.The secreted form of MOG may trigger autoimmunity if released into the cerebrospinal fluid and periphery. MOG is thought to be a key target for autoantibodies and cell-mediated immune responses in inflammatory demyelinating diseases such as multiple sclerosis (MS) and is therefore widely studied in this field.The MOG (35-55) fragment is the most potent auto-antigenic region of MOG, and the most effective at inducing experimental autoimmune/allergic encephalomyelitis (EAE), an animal model that resembles MS. This peptide has a free carboxylic acid at the C-terminus, an amide version is also available in our catalogue.

<p>Peptide LCBiot-FHENWPS-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.</p>

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

<p>Glucagon-like peptide (GLP)-1 is a gastrointestinal peptide hormone with multiple roles in relation to metabolism. The primary role of GLP-1 is increasing insulin secretion in the presence of high plasma glucose levels, in addition, GLP-1 also suppresses glucagon secretion from the pancreas. GLP-1 slows down gastric emptying and regulates appetite, both valuable in reducing food intake and body weight. These roles of GLP-1 make it a useful target in the management of type 2 diabetes mellitus (T2DM).GLP-1 exerts its effects by binding to and activating the class B G protein-coupled receptor (GPCR):  GLP-1 receptor (GLP-1R). Receptor activation in turn activates signalling pathways which culminates in insulin secretion via CAMP and Ca2+ signalling.Recently evidence has increased for GLP-1 playing a cardio-protective role as well as regulating immune responses and even in kidney function. GLP-1 may also exert neuroprotective and neurotropic effects as it can decrease endogenous levels of amyloid-β (Aβ) and prevent Aβ-induced cell death.This peptide contains N-terminal 5-Carboxyfluorescein (5-FAM), a widely used green fluorescent tag.</p>

Peptide H-TGIVSGFGR^-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.

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

<p>Staphylococcus aureus is a major human pathogen that utilizes autoinducing peptide (AIP) signals to regulate virulence. Methods to intercept bacterial quorum sensing (QS) aim to find novel anti-virulence treatments.Auto-inducing peptide (AIP) is a cyclic thiolactone quorum sensing peptide from Staphylococcus aureus which is responsible for activating the agr response. AIP is released from the bacteria and its extracellular concentration is then sensed by a two-component system on the bacterial surface, AgrC and AgrA. AgrC is the membrane histidine kinase receptor and AgrA is a response regulator- upon binding of AIP, AgrC phosphorylates AgrA.AIP accumulates during growth activating an AgrC and AgrA cascade when it reaches a critical signal level. This cascade activates P2 and P3 promoters which autoactivate the agr system and upregulate RNAIII transcription. RNAIII regulates the expression of virulence factors including toxins, super-antigens, and exo-enzymes. Extensive research to identify AIP:AgrC inhibitors aims to find therapeutics against pathogens.AgrD is the precursor peptide of AIP, and AgrB is an integral membrane endopeptidase essential to biosynthesize AIP. This AIP system is conserved among many Gram-positive bacteria. S. aureus strains are categorized into four groups (I-IV) according to their AIP signal and cognate extracellular receptor, AgrC. Each group is associated with a certain disease profile, and S. aureus group-III strains are responsible for toxic shock syndrome. AIP-III the conserved thiolactone macrocycle of the AIP family with an extended N terminal. Alanine scanning has identified a key trifactor of hydrophobic residues in the thiolatone ring that allow recognition by AgRC and the anchor point on the exocyclic tail needed for receptor activation. This knowledge is key for the design of novel AIP:AgrC inhibitors.</p>

<p>[AF488] 6xHis Tag, composed of a hexa-histidine tag and the fluorescent dye, Alexa Fluor 488 (AF488).</p>

Peptide H-LWEGSTSR^-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.

Peptide H-YENYELTLK^-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.

Peptide Ac-EEQYNSTYR-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.

<p>Peptide H-GLEWVTFISYDGNNK^-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.</p>

Peptide H-ERPPPVPNPDYEPIR^-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.

<p>Peptide LCBiot-DIPIGAGICASYHTVSLL-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.</p>

<p>Peptide H-VGEVIVTK^-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.</p>

<p>Peptide H-QESEVEEPL^-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.</p>

<p>SMAC/DIABLO-[Cys(AF647)] is a pro-apoptotic peptide that is derived from the mitochondrial protein known either as Second Mitochondria-Derived Activator of Caspases (Smac) or Direct IAP Binding Protein with low isoelectric point, pI (DIABLO). During apoptosis the mitochondria has increased permeability to Smac/DIABLO, which causes the protein to diffuse into the cytosol. Here, Smac/DIABLO adheres to Inhibitors of apoptosis proteins (IAPs) and prevents them from binding to caspases, which in turn accentuates apoptosis.This peptide has a C-terminal cysteine linker labelled with AF647, which is a bright, far-red-fluorescent dye with excitation between 594 nm and 633 nm.</p>

<p>Fragment of the angiotensin-converting enzyme 2 (ACE2) peptidase domain (PD) alpha1 helix, a domain important for the interaction of ACE2 with the severe acute respiratory syndrome (SARS coronavirus receptor binding domain (SARS-CoV-2-RBD). SBP1 associates with the SARS-CoV-2-RBD with nanomolar affinity and can potentially block the key mechanism by which SARS CoV-2 initiates entry into human cells.</p>

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

This C-terminal Sortagging peptide acts as a (oligo)glycine nucleophile in the final steps of a sortagging protein labelling reaction. This reaction results in the [Lys(5-TAMRA)]- fluorescent moiety being attached to the C-terminus of the target protein or peptide.A substrate peptide containing the LPXTG motif is recognised and cleaved by the enzyme Sortase A (SrtA) from Staphylococcus aureus. The catalytic cysteine residue in the active site of SrtA, serves as a nucleophile to cleave the peptide bond between threonine and glycine of the substrate peptide. Cleavage results in the formation of a thioacyl intermediate between the substrate peptide and SrtA. This intermediate is then resolved by the N-terminus of this (oligo)glycine nucleophile peptide, resulting in the creation of a new peptide bond that links the substrate peptide to this peptide and its fluorescent dye.  This method of protein labelling is known as sortagging.5-Carboxytetramethylrhodamine (5-TAMRA) is a widely used fluorescent dye which excites at 546 nm and emits at 579 nm.

Peptide H-IANVFTNAFR^-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.

Peptide Ac-CGVNNSNEDFREENLKTAN-NH2 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.

<p>Insulin is a peptide hormone produced by β cells of the pancreatic islets that regulates carbohydrates metabolism. It is a heterodimer of an A-chain and a B-chain, which are linked together by disulfide bonds. Insulin stimulates the absorption of glucose from the blood into fat, muscle and liver cells where it is converted into either glycogen or fat.Insulin is secreted in the blood as a response to high level of blood glucose resulting in enhanced glucose uptake and metabolism in the cells so to reduce blood glucose levels. Circulating insulin also affects the synthesis of proteins in many tissues. Low blood insulin levels result in catabolism, particularly of reserve body fat. A decrease or absence of insulin activity results in diabetes mellitus, a condition of high blood sugar level (hyperglycaemia).N-terminal chain B labelled with AF488. AF488 dye is a bright, green-fluorescent dye with excitation maxima around 490 and emission maxima around 525. AF488 dye is pH-insensitive over a wide molar range.</p>

Peptide H-IAVSYQTK^-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.

<p>GPS1573 is a potent and dose-dependent peptide antagonist of adrenocorticotrophic (ACTH) -stimulated melanocortin type 2 receptor (MC2R). Along with GPS1574, GPS1773 is an ACTH analogue and as such antagonises MC2R in the nanomolar range.The clinical relevance of GPS1573 is related to Cushing's disease and syndrome, which are both associated with a hypercortisolemic state. Selective antagonism of MC2R using GPS1573 may be a novel treatment modality for Cushing's disease and syndrome.</p>

Peptide H-RPPGF^-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.

<p>Peptide 5Fam-LRRFSTAPFAFIDINDVINF-NH2 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.</p>

<p>Peptide H-LVVVGAGCVGK^-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.</p>

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

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

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

<p>Peptide H-TYPVPFQR^-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.</p>