Peptides
Peptides are short chains of amino acids linked by peptide bonds, serving as important biological molecules that play key roles in cellular processes. They function as hormones, neurotransmitters, and signaling molecules, and are widely used in therapeutic and diagnostic applications. Peptides are also crucial in research for studying protein interactions, enzyme activities, and cell signaling pathways. At CymitQuimica, we provide a diverse selection of high-quality peptides to support your research and development needs in biotechnology and pharmaceuticals.
Subcategories of "Peptides"
Found 29699 products of "Peptides"
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MART-1 (26-35)
CAS:Native Melan-A (26-35) decapeptide derives from the melanocyte lineage-specific protein Melan-A/MART-1, which is expressed in almost 75-100% of primary and metastatic melanomas. The region 26-35 of Melan-A protein acts as an antigenic peptide that is recognized by CD8+ tumor-reactive cytolytic T lymphocytes (CTLs) for designing antigen-specific cancer vaccines1. It has been shown that CD8+ Melan-A-specific CTLs isolated from melanoma patients efficiently lyse the Melan-A-expressing HLA-A*0201+ melanoma cell line. However, CTLs preferentially recognize the Melan-A (26-35) peptide as compared with the Melan-A (27-35) peptide. Moreover, the Melan-A (26-35) A27L analog (ELAGIGILTV) has a higher binding affinity to HLA-A*0201 than the native Melan-A (26-35) peptide (EAAGIGILTV), and consequently displays more potent antigenicity and immunogenicity. It has been reported that the concentration of Melan-A (26-35) A27L analog required to obtain 50% of maximal antigenic activity (EC50) is 0.01nM, whereas that of the native Melan-A (26-35) peptide is 0.25nM1. Therefore, the relative activity of Melan-A (26-35) A27L analog is 25 fold higher than that of the native Melan-A (26-35) peptide. Furthermore, functional competition assay has shown that the concentration of Melan-A (26-35) A27L analog required to achieve 50% inhibition (IC50) of tumor lysis is 2nM, which is 10 fold lower than that of the native Melan-A (26-35) peptide. Regarding peptide stability in human serum, the half-lifes (t1/2) of the native Melan-A (26-35) peptide and the A27L analog are quite similar (45 and 40min, respectively) as measured by HPLC-ESI-MS, but much higher than that of the Melan-A (27-35) nonapeptide (5min).Formula:C42H74N10O14Color and Shape:PowderMolecular weight:943.1 g/molNatalizumab LC46-58 KGN deimmunised
Natalizumab LC46-58 KGN deimmunisedMolecular weight:1,452.8 g/mol5Fam-GDYSHCSPLRYYPWWKCTYPDPEGGG-NH2
Peptide 5Fam-GDYSHCSPLRYYPWWKCTYPDPEGGG-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.
H-LTVGAAQVPAQLLVGALR^-OH
Peptide H-LTVGAAQVPAQLLVGALR^-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.
H-DRVYIHPFHL-NH2
Peptide H-DRVYIHPFHL-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.
H-LALDNGGLAR^-OH
Peptide H-LALDNGGLAR^-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.
Biotin-Influenza A NP (147-155) (H-2Kd)
Influenza A nucleoprotein (NP) residues 147-155 (TYQRTRALV) is from a conserved region of the nucleoprotein that is positively selected. NP (147-155) is an effective immunodominant CTL epitope MHC allele H-2Kd in mice that can induce an effective antigen-specific immunity. This was validated by HLA binding and cytotoxicity assays in human cells. Immunisation of mice with the NP (147-155) offers protection against a fatal dosage of influenza. In addition, the NP (147-155) epitope can stimulate antigen-specific T cells in T cell assays such as ELISPOT to understand humoral responses to viral infection. Further work with the NP (147-155) epitope can help new flu vaccine design to provide more effective protection. This epitope is provided with a C-terminal biotin sequence for easier purification and detection.Molecular weight:1,332.7 g/molJAG-1, scrambled
Scrambled peptide of JAG-1(188-204). Jagged - 1 is a cell surface ligand for in the Notch pathway. Notch receptors and ligands are present on the extracellular service of cells and require cell-cell contact for engagement. Ligand binding to Notch receptors results in the proteolytic cleavage of membrane-bound Notch receptors, thus allowing the intercellular region to be transported to the nucleus and become a transcriptional activator. The ligand-induced Notch activation is regulated by E3 ubiquitin ligases, Mindbomb1 (Mib-1) and Neuralized.JAG1 is widely expressed throughout mammalian development, across many tissues and developmental stages. Notch signalling plays a critical role in cellular fate determination including muscle cell differentiation, neurogenesis, and the development of the sensory regions of the inner ear- heart- kidney- eye- lung and other tissues.Jag-1 has been implicated in breast- cervical- colorectal- endometrial- gastric- head and neck- ovarian- hepatocellular- lung- pancreatic- prostate, and kidney and adrenocortical cancers, leukemia and lymphoma. Co-overexpression of Notch-1 and Jagged-1 predicts the poorest overall cancer survival. JAG1 mutations have also been associated Alagille syndrome.Molecular weight:2,105.9 g/molTruncated flagellin 22 (flg22)
Flagellin is the structural protein which forms the major portion of bacterial flagella filaments. The N- and C- terminals of flagellin are highly conserved regions, whereas the central core can vary greatly between bacterial species. Flagellin 22 (flg22) is the most conserved stretch of amino acids across bacterial species and is located towards the N-terminal of flagellin.Flg22 is a potent elicitor of plant immune responses and is recognised in plants by the membrane bound leucine-rich repeat-receptor kinase FLAGELLIN SENSITIVE 2 (FLS2). Flg22 induces defence gene expression to trigger both local and systemic immune responses and is thus widely used in plant defence studies.Truncated flagellin 22 (flg22-θ”2) represents amino acids 1-20 of flg22. It is a strong and selective agonist of tomato FLS2, with weak agonist activity towards Arabidopsis FLS2 even at high concentrations.Molecular weight:2,087.1 g/molCREB327/active transcription factor CREB-A (113-126) [5-FAM] amide, Human
CREB is a transcription factor that regulates diverse cellular responses including: proliferation- survival and differentiation- adaptive immune responses- glucose homeostasis- spermatogenesis- circadian rhythms and synaptic plasticity associated with memory. CREB is induced by a variety of growth factors and inflammatory signals and subsequently mediates the transcription of genes containing a cAMP-responsive element, including IL-2, IL-6, IL-10, and TNF-alpha. In the immune system, CREB induces an anti-apoptotic survival signal in monocytes and macrophages, has a role in promoting the proliferation, survival and regulation of T and B lymphocytes and is required for the generation and maintenance of regulatory T cells. CREB also often promotes anti-inflammatory immune responses, such as through the inhibition of NF-KB activity, the induction of IL-10, and the generation of Tregs. These anti-inflammatory responses could be protective by inhibiting unwanted inflammation, tissue damage, and autoimmune responses, or they could be pathogenic in the context of infection and tumour immunosurveillance. Peptide is labelled with an N-terminal 5-carboxyfluorescein (5-FAM), a widely used green fluorescent tag.Molecular weight:2,087.1 g/molpE-RPRLSHKGPMPF-OH
Peptide pE-RPRLSHKGPMPF-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.Molecular weight:1,533.82 g/molDystrophin (2690-2700)
Forms of inherited muscular dystrophy such as Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) result from mutations targeting the dystrophin gene. These disorders are X-linked, progressive, and cause the gradual weakening of the muscles leading to respiratory failure and ultimately reduces the patient lifespan.In DMD, mutations lead to the production of premature stop codons and hence the truncated dystrophin protein product is vulnerable to nonsense mediated decay and degradation. Therefore, dystrophin production in muscle cells is reduced. On the other hand, nonsense mutations which also contribute to DMD, cause exon skipping in BMD and result in an internally truncated protein product which are partially functional. The symptoms of BMD are later onset compared with DMD which develop in patients between 2 to 7 years.Treatments of dystrophin disorders are in clinical trial including antisense oligonucleotide exon skipping and gene therapy. However, the efficacies of these treatments are not easily quantified. Currently levels of muscular dystrophin are quantified by western blot which can be unreliable. The peptide provided here, aligning residues dystrophin (2690-2700), has been tested via western blot, mass spectrometry, immunostaining and RT-PCR to try and provide the most robust method of validation of dystrophin levels possible. Further study with this dystrophin fragment could prove to be a vital step in the understanding and treatment of dystrophin disorders. Within our catalogue we also have other peptides tested for dystrophin quantification available plus the full-length dystrophin protein.Thr-Met-Ile
Custom research peptide; min purity 95%. For different specs please use the Peptide Quote ToolFormula:C15H29N3O5S1Molecular weight:363.47 g/molMOG (34-56) Human amide
Myelin oligodendrocyte glycoprotein (MOG) is a member of the immunoglobulin (Ig) protein superfamily and is expressed exclusively in the central nervous system (CNS) 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 (34-56) fragment is in the most potent auto-antigenic region of MOG, and is highly effective at inducing experimental autoimmune/allergic encephalomyelitis (EAE), an animal model that resembles MS. This peptide has an uncharged C-terminal amide.Color and Shape:PowderMolecular weight:2,763.14 g/molHS1 protein (160-168)
Reactivity to human leukocyte antigens (HLAs) is a risen concern in clinical treatments such as organ transplant rejection. Understanding the epitopes causing reactivity and the signalling pathways could lead to better clinical therapies. The peptides presented by the non-classical HLA-G are important for a largely tolerogenic role and are considered part of an immune checkpoint. This, therefore, makes understanding ligand characteristics and HLA-G a target for cancer therapies. The HS1 fragment (160-168) has been identified as an epitope that human leukocyte antigen HLA-G naturally presents, determined by liquid chromatographic tandem mass spectrometry (LC-Ms/MS). This epitope has been used extensively in the literature to help understand the natural ligand presentation of HLA-G.For example, leukocyte immunoglobulin (Ig)-like receptors (LILRs) are key regulators of the immune response and therefore targets for therapeutics. Inhibitory LILRB1 and LILRB2 with HLA-G are pivotal for immunotolerance during pregnancy and autoimmune diseases plus cancer cell immune evasion. HS1 fragment (160-168) was used in binding affinity assays to clarify the conformational plasticity of the interaction between the receptor, the HLA antigen, and the various peptides HLA-G can accommodate.Color and Shape:PowderMolecular weight:1,091.6 g/molAc-DIEVLQEQIRC-NH2
Peptide Ac-DIEVLQEQIRC-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.[5-FAM]/[Lys(Dnp)]-SARS-CoV-2 S1/S2
Fluorescence resonance energy transfer (FRET) peptide substrate derived from SARS-CoV-2 spike (S) S1/S2 site. This FRET peptide exhibits internal fluorescence quenching when intact, however hydrolysis of the peptide between the donor/acceptor pair generates fluorescence, enabling the quantitative measure of enzymatic activity. The S1/S2 site of SARS-CoV-2 S is efficiently cleaved by a wide range of proteases including furin.SARS-CoV-2 Spike (S) protein is one of the four essential structural proteins from the coronavirus SARS-CoV-2. S protein is a large, class I viral transmembrane protein essential for viral entry into the cell via binding to the host angiotensin-converting enzyme 2 (ACE2) receptor. S assembles as a trimer on the surface of the virion, giving it its distinctive 'corona' or crown-like appearance. The ectodomains of S proteins are divided into two subunits, S1 and S2. S1 helps in host receptor binding and is further divided into two subdomains: N-terminal domain (NTD) and C-terminal domain (CTD), both of which act as receptor-binding domains. The S1 CTD contains the receptor-binding motif (RBM). The S2 subunit accounts for fusion. Peptide contains an N-terminal 5-carboxyfluorescein (5-FAM), a widely used green fluorescent tag and a 2, 4-dinitrophenyl (Dnp) quencher.Molecular weight:1,864.8 g/molCNP (1-22), Human, Porcine
C-type natriuretic peptide (CNP) is expressed from numerous tissue types but primarily within the central nervous system and the bone. CNP binds the natriuretic peptide receptor B (NPR-B) and acts as an autocrine/paracrine factor. CNP signalling acts as a positive regulator of endochondral bone growth. Both CNP and NPR-B are being explored as therapeutic targets for growth disorders including achondroplasia. CNP (1-22) is the major form of CNP found in the plasma. Exogenous CNP (1-22) can be cleared quite effectively, administration of a constant 'high' dose was able to overcome this obstacle to induce endochondral ossification and accelerated bone growth. However, CNP (1-22) may have the potential to induce systemic vascular resistance and blood pressure issues which would need to be addressed before future clinical applications. Researchers are trying to better establish the function and role of CNP (1-22) one strategy has been the addition of conjugates, such as the C-terminal of ghrelin, to try and improve the clinical efficacy.Color and Shape:PowderMolecular weight:2,196.1 g/molovalbumin (371-382), chicken
Ovalbumin (OVA) is the primary protein in egg-white, and is involved in initiating food allergies and asthma. It is a highly immunogenic protein and can be used for peptide conjugation in the development of antibodies.OVA (371-382) is a class I (Kb)-restricted peptide epitope of OVA. The ovalbumin fragment is presented by the class I MHC molecule, H-2Kb.Molecular weight:1,344.7 g/molH-SGPPGLQGR^-OH
Peptide H-SGPPGLQGR^-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.(Ala11, D-Leu15)-Orexin B human
Orexin B is one of two closely related peptides- the orexins (also known as hypocretins). These small neuropeptides are secreted from orexin-containing neurons, located mainly in the lateral hypothalamus (LH). Orexins function via the binding and activation of two G-protein-coupled receptors (GPCRs)- orexin receptor type 1 (OX1) and 2 (OX2).[Ala(11), D-Leu(15)]orexin-B is a highly potent and selectiveOX2 receptor agonist which can discriminate between the OX1 and OX2 receptors, with a 400-fold selectivity for the OX2 over OX1. [Ala(11), D-Leu(15)]orexin-B is therefore a beneficial tool for addressing the functional roles of OX2.The L-leucine residue at position 11 of orexin B is important for selectivity to OX2 over OX1. L-Alanine substitution at position 11 and D-leucine substitution at positions 15 maintain the potency of orexin-B to OX2, while significantly reducing the potency for OX1.Orexins play several vital roles in a range of physiological activities, including: circadian rhythm- feeding behaviour- energy balance- glucose metabolism- neuroendocrine functions- stress-adaptive responses and reward and addiction. Orexins have also been linked to the pathological processes of neurological diseases such as: narcolepsy- depression- ischemic stroke- drug addiction and Alzheimer's disease.Molecular weight:898.5 g/molBMAP-18
Bovine myeloid antimicrobial peptide-27 (BMAP-27) belongs to the cathelicidin family of peptides which displays rapid bactericidal activity against Staphylococcus aureus, Streptococcus uberis, and Escherichia coli. Cathelicidins belong to the large group of cationic peptides with amphipathic properties and have an important role in the mammalian innate immune system. BMAP-27 is cytotoxic to human erythrocytes and neutrophils, although at higher than microbicidal concentrations. It has a potential for the treatment of bacterial infections in individuals with cystic fibrosis-associated lung infections.Molecular weight:3,281.1 g/molVal-Phe-Val
Custom research peptide; min purity 95%. For different specs please use the Peptide Quote Tool
Formula:C19H29N3O4Molecular weight:363.45 g/molBoc-Val-Pro-Arg-AMC
Boc-VPR-AMC is a fluorogenic peptide substrate composed of the short peptide chain, Valine-Proline-Arginine (VPR) and the fluorophore, 7-amino-4-methlycoumarin (AMC). Fluorogenic peptide substrates such as Boc-VPR-AMC have high sensitivity and specificity and therefore can be used to detect molecules of interest. For example within the field of scientific forensics, Boc-VPR-AMC can be used to investigate deposits of saliva in situ. When Fluorogenic peptide substrates are incubated with specific enzymes, fluorescence is emitted due to the release of the fluorophore from the peptide-fluorophore bond. When Boc-APR-AMC interacts with its target enzyme, the 7-amino-4-methylcoumarin fluorophore is released causing a fluorescent emission at 440nm.
Molecular weight:627.3 g/molSARS-CoV-2 Nucleoprotein (271-285)
The coronavirus (CoV) nucleoprotein is the major component of CoV structural proteins. The nucleoprotein has a critical role in virus assembly and RNA transcription. The nucleoprotein is essential in the formation of helical ribonucleoproteins and in regulating viral RNA synthesis. The nucleoprotein can also regulate infected host cellular mechanisms. It is highly expressed during infection and may induce protective immune responses against SARS-CoV and SARS-CoV-2.The nucleoprotein residues TQAFGRRGPEQTQGN (271-285) from SARS-CoV-2 have been identified as a T-cell epitope with a predicted HLA restriction. Immune targeting of confirmed epitopes may potentially offer protection against SARS-CoV-2 and help the development of vaccines for long-lasting immunity.
Molecular weight:1,645.8 g/molPantinin-3
Pantinin-3, like other pantinin peptides, has high activity against Gram-positive bacteria yet weak activity against Gram-negative bacteria. With the exception of S. aureus, pantinin-3 displays the highest activity against all Gram-negative bacteria for which it has been tested. Pantinin-3 also displays activity against Candida tropicalis and has relatively mild haemolytic activity against human red blood cells.Color and Shape:PowderMolecular weight:1,491.77 g/molH-TTLTAAITTVLAK^-OH
Peptide H-TTLTAAITTVLAK^-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.SARS-CoV-2 NSP13 (556-570)
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 (556-570) 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.Molecular weight:1,717.9 g/molH-FDEQLPIK^-OH
Peptide H-FDEQLPIK^-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.
Ac-TLNF-OH
Peptide Ac-TLNF-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.H-LEQLAGNLR^-OH
Peptide H-LEQLAGNLR^-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.OXA (17-33)
Orexin-A (also known as hypocretin-1) is a hypothalamic neuropeptide that regulates feeding behaviour, reward processes, cognition, the sleep-wake cycle and stress. Orexin-A is involved in stress induced mental illness such as major depressive disorder and anxiety disorders and may therefore be a potential target for treatment of these conditions.Orexins are excitatory neuropeptides generated from the prepro-orexin precursor that is exclusively localised in cells of the lateral and posterior hypothalamic region. Orexins are also widely expressed in human and mammalian retinas, such as bipolar cells, amacrine cells and ganglion cells.Orexin-A activates the orphan G-protein-coupled orexin receptor, type 1 (OX1R) and 2 (OX2R). There are approximately 10,000-20,000 orexinergic neurons in the human brain.
Molecular weight:1,747.9 g/molHistone H2A (1-20)-GGK(Biotin)
The Histone H2A residues 1 to 20 are derived from histone 2A (H2A) which is one of the four core histones (H2A, H2B, H3 and H4) fundamental in compacting eukaryotic DNA into a structure known as the nucleosome. The nucleosome arises when 147 base pairs of DNA wrap around a H3-H4 tetramer and two H2A-H2B dimers, forming the histone octamer core.At the site of DNA entry on the outer nucleosome, the C-terminus of H2A is present and is able to interact with linker histones or other factors. This allows for variation and changes in nucleosome stability to occur. Furthermore Histone H2A has histone variants such as H2A.Z and H2A.X (which are present in all organisms) and these variants alter the organisation of the DNA.Due to histones containing a large number of lysine and arginine residues they have a positive net charge which interacts in an electrostatic manner with the negatively charged phosphate groups in DNA. The transcriptional activation or silencing of the chromatin is controlled by ATP-dependent chromatin remodelling factors and histone modifying enzymes which target histone proteins. Both processes function to alter to change the positioning of the nucleosome, allowing the DNA it to be either available to the transcription machinery or inaccessible.Biotin has been added to the lysine on GGK.Molecular weight:898.5 g/molHistone H3 (1-20) K4Me3, K9Ac-GG-[Lys(5-FAM)]
Histone H3 (1-20) K4Me3, K9Ac-GG-[Lys(5-FAM)] is derived from Histone 3 (H3) which is one of the four core histones fundamental for compacting eukaryotic DNA into the nucleosome.-Lysine 4 of Histone H3 (1-20) K4Me3, K9Ac-GG-[Lys(5-FAM)] has been tri-methylated, lysine 9 has been acetylated and the C-terminal has been labelled with 5-Carboxyfluorescein (5-FAM), a widely used green, fluorescent tag. Additionally, this peptide contains an uncharged C-terminal amide.LD: Histone H3 (1-20) K4Me3, K9Ac-GG-[Lys(5-FAM)] is derived from Histone 3 (H3) which is one of the four core histones (H2A, H2B, H3 and H4) fundamental in compacting eukaryotic DNA into the nucleosome. The nucleosome arises when 147 base pairs of DNA wrap around a H3-H4 tetramer and two H2A-H2B dimers, forming the histone octamer core. Both H4 and H3 are highly conserved and perform roles in binding to segments of DNA which enter and leave the nucleosome and in chromatin formation. Similar to the other core histone, H3 has a globular domain and a flexible N-terminal domain, 'histone tail' which can undergo modifications such as acetylation, methylation, phosphorylation and ubiquitination. Due to histones containing a large number of lysine and arginine residues they have a positive net charge which interacts in an electrostatic manner with the negatively charged phosphate groups in DNA. The transcriptional activation or silencing of the chromatin is controlled by ATP-dependent chromatin remodelling factors and histone modifying enzymes which target histone proteins. Both processes function to alter the positioning of the nucleosome, allowing the DNA it to be either available or inaccessible to the transcription machinery.The lysine at position 4 of this peptide has been tri-methylated and it is implicated in studies that this modification may remodel the chromatin so that it is more accessible to transcription factors, which may ultimately increase the level of gene expression. The lysine at position 9 has been acetylated, which neutralizes the positive charge on the amino acid, loosening the chromatin structure. This alteration to the accessibility of chromatin promotes the initiation of transcription.Additionally, Histone H3 (1-20) K4Me3, K9Ac-GG-[Lys(5-FAM)] has a C-terminal GKK linker labelled with 5-Carboxyfluorescein (5-FAM), a widely used green fluorescent tag. This peptide also has an uncharged C-terminal amide.Molecular weight:2,866.5 g/molGag protein (181-189) acetyl/amide [Simian immunodeficiency virus]
Gag peptide, derived from the simian immunodeficiency virus (SIV), is a homologue of the human immunodeficiency virus (HIV) gag protein which interacts with viral components in order to induce the infectious form of the virus. SIV can be used to model HIV.
Molecular weight:1,124.5 g/molApidaecin IB
Apidaecin IB was isolated from the honeybee Apis mellifera. As a cationic proline-rich antimicrobial peptide (PrAMP), Apidaecin IB shows sequence homology with drosocin but is devoid of any pore-forming activity. Apidaecin IB is most active against gram-negative bacteria, it can navigate the outer membrane to the periplasm and then to the cytoplasm. Apidaecin IB is a non-lytic AMP, the main target of its antimicrobial activity appears to be inhibition of the chaperone heat shock protein DnaK. Toxicity appears to be exclusively to bacteria and thus has been trialled as a treatment for systemic bacterial infections. Numerous analogues and derivatives are being investigated to establish Apidaecin IB mode of action and also to improve its functionality.Formula:C95H150N32O23Color and Shape:PowderMolecular weight:2,107.42 g/molAcrAP1
Venom peptidomes and proteomes have yielded significant novel drug discoveries. The non-disulphide bridge peptides (NDBPs) have become a particular focus due to their large range of structures as well as biological activity while retaining high specificity.In scorpion venom A. crassicauda, AcrAP1 was identified as a NDBP. Data shows it has antimicrobial activity against bacteria and yeast while also capable of haemolysing of horse erythrocytes. However, AcrAP1 did not affect the growth of the cancerous cell lines tested. Therefore, this peptide could be a useful model for modification to improve its potency. Furthermore, it may allow researchers to identify specific targets in disease pathways for new drug designs. A significant example of this, bradykinin-potentiating peptide Captopril® manages hypertension and originated from the conserved NDBP family.
Molecular weight:1,961.35 g/molMastoparan-T
Custom research peptide; min purity 95%. For different specs please use the Peptide Quote ToolFormula:C73H129N19O15Molecular weight:1,512.9 g/molSuc-LLVY-[AMC]
Fluorogenic substrate peptide of the 20S proteasome. In its intact state this peptide is non-fluorescent, however when aminomethylcoumarin (AMC) is released upon hydrolysation, fluorescence can be detected. This peptide is therefore a useful tool for analysing the activity of the 20S proteasome as well as other chymotrypsin-like proteases and calpains. This peptide is also a substrate for chymase, papain, carboxypeptidase Y, proteinase yscE (kexin) and ingensin.AMC is a fluorescent dye with excitation maxima at around 360 nm and emission maxima at around 450 nm. AMC can be excited with a mercury lamp and observed using a UV filter set.Color and Shape:PowderMolecular weight:763.4 g/molH-VSSASDYNSSELK^-OH
Peptide H-VSSASDYNSSELK^-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.β-Amyloid (1-15) human
Amino acids 1-15 of β-amyloid protein (Aβ), this fragment represents one of many short Aβ species found in vivo and is formed by the cleavage of amyloid β precursor protein by β- and α-secretase.Aβ has been identified as the key subunit of the extracellular plaques found in the brains of patients with Alzheimer disease (AD) and Down 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.Molecular weight:1,325.3 g/mol4-Fluorobenzoyl-A20FMDV2
A20FMDV2, a peptide derived from the foot and mouth disease virus, inhibits the epithelial-specific integrin alphavβ6 and here is labelled with 4-fluorobenzoyl as the light version of the PET ligand 4-[18F]Fluorobenzoyl A20FMDV2 which can be used for in vivo imaging.Molecular weight:2,283.3 g/molH-KI^TDFGR^AK-OH
Peptide H-KI^TDFGR^AK-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.AH1 Sequence (6-14)
The AH1 peptide is a H2-Ld-restricted epitope derived from the sequence of the gp70 envelope protein of the ecotropic mammalian C-type retrovirus, murine leukaemia virus (MuLV, emv-1).The envelope gene products of MuLV are expressed in a variety of tumour cells, including B16 melanoma, lymphomas and leukaemia's. AH1 peptide is a tumour-associated antigen and is highly expressed on CT26 and C51 tumour cells.
Color and Shape:PowderMolecular weight:1,126.5 g/molCyc-DHECHYRIKPTFRRLKWKYKGKFWCPS-OH
Peptide Cyc-DHECHYRIKPTFRRLKWKYKGKFWCPS-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.
Ac-TTAI-NH2
AAT is a highly abundant serine protease inhibitor primarily produced in the liver to protect the lung tissue. However, misfolding of AAT can result in significant liver disease, lung disease, and cancers. Defective AAT is characteristic of the misfolding protein diseases known as serpinopathies.Ion mobility mass spectrometry (IM-MS) was used to identify Ac-TTAI-amide as a ligand effecting α1-antitrypsin stability. Interaction of Ac-TTAI-amide with AAT results in increased stability and reduced polymerisation. Thus Ac-TTAI-amide is a useful target for further research in to serpinopathy management.Color and Shape:PowderMolecular weight:445.3 g/molAc-EEEEE-OH
Peptide Ac-EEEEE-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.[5-FAM]-EB1
EB1 is a penetratin analogue that was synthesised to be an endosomolytic cell penetrating peptide (CPP). Certain amino acids in the penetratin sequence were replaced with histidine to encourage formation of an alpha helix upon protonation in the acidic endosomes. As a CPP, EB1 has been shown to form a strong interaction with the phospholipid bilayer during insertion with rapid cellular uptake, there is a moderate amount of cell leakage and no significant cytotoxicity. EB1 is provided here as a C-terminal amide with a N-terminal 5-carboxyfluorescein (5-FAM), a widely used green fluorescent tag often preferred due to its high stability absorbance 492 (nm), 518 emission (nm).Molecular weight:3,458.07 g/molH-ESHVTLASPEETR^-OH
Peptide H-ESHVTLASPEETR^-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.
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