Produits biochimiques et réactifs

<p>Binds to human transferrin receptor (TfR). This 12-amino acid peptide does not compete with transferrin for receptor binding and is able to internalise into TfR expressing cells.</p>

<p>Conjugated Estradiol 3-CME hapten</p>

<p>A synthetic peptide for use as a blocking control in assays to test for specificity of TREM2 antibody, catalog no. 70R-4485</p>

<p>Conjugated Triiodothyronine-Alk Phos hapten</p>

<p>Peptide derived from the phosphoprotein synapsin-1, a substrate in the presynaptic terminal for protein kinases such as cyclic AMP-dependent protein kinases and calcium dependent protein kinases. The lysine at position 14 is isotopically labelled with carbon-13 (6) and nitrogen-15 (2).</p>

<p>Cellular immunotherapy is an effective treatment option against Epstein-Barr virus (EBV)-driven lymphoproliferation in recipients of hematopoietic stem cells. However, increasing the number of identified epitope targets will help improve the response rate and success. Viral tegument protein BNRF1 is a critical target in EBV inducing specific CD4+ T-cell responses. 18 epitopes within BNRF1 are known, including  (1238-1252). BNRF1-specific CD4+ T cells are cytotoxic and limit EBV-driven B cell transformation. Work with EBV BNRF1 (1238-1252) epitope and others will help improve T cell immunotherapy and our understanding of host-virus interaction.</p>

<p>SARS-CoV-2 is an enveloped single-stranded, positive-sense RNA virus. The SARS-CoV-2 nucleocapsid (N) protein is essential for viral RNA replication and new virion assembly. The N protein assembles the positive strand viral genome RNA forming a helical ribonucleocapsid (RNP) during the packaging of the RNA genome. The N protein is also involved in regulating viral RNA synthesis during replication and RNA transcription and modulating metabolism in infected subjects.</p>

<p>Peptide Ac-CMASHLRRSQY-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>Factor H is a glycoprotein that plays a crucial role in the regulation of the complement system. It acts as an inhibitor of the alternative pathway, preventing excessive activation and subsequent damage to host cells. Factor H contains multiple domains, including a p38 mitogen-activated protein (MAP) kinase binding site and disulfide bonds that contribute to its stability. This protein is essential for maintaining immune homeostasis and preventing autoimmune diseases. Additionally, Factor H has been studied for its potential therapeutic applications in various fields, such as erythropoietin production, collagen synthesis, and multidrug resistance inhibition. Its unique properties make it a valuable tool for researchers in the life sciences field.</p>

<p>Cell permeable peptide which is able to activate phosphoinositide 3- kinase, for which it binds with high affinity to the p85 subunit. 740 Y-P also has mitogenic activity as it is able to induce mitosis in muscle cells, and promotes cell survival in neurones. PI 3- kinase's are a family of enzymes involved in many cellular pathways including cell proliferation, growth, differentiation, survival, motility, and intracellular trafficking. PI 3 Kinases are therefore also involved in many cancers.</p>

<p>Methyllysine antibody is a highly specialized antibody that specifically targets actin filaments. It is commonly used in research studies to study the role of actin in cell growth and development. This antibody can be used to detect actin in various tissues and cell types, making it a valuable tool for scientists studying actin dynamics. Additionally, methyllysine antibody can also be used to study the effects of growth factors on actin organization and function. This antibody is available as both polyclonal and monoclonal antibodies, providing researchers with options based on their specific experimental needs. With its high specificity and sensitivity, methyllysine antibody is an essential tool for understanding the intricate mechanisms of cellular processes involving actin.</p>

<p>Histone 4 (H4) is one of the four core histones (H2A, H2B, H3 and H4) which are essential for compacting eukaryotic DNA into the nucleosome. Due to the high lysine and arginine content, histones have a net positive charge and therefore electrostatically interact with negatively charged DNA. 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. Like other core histones, H4 has a globular domain and a flexible N-terminal domain, the histone tail, which can undergo modifications such as acetylation, methylation, phosphorylation and ubiquitination.Gene transcriptional activation or inactivation is controlled by ATP-dependent chromatin remodelling factors and histone modifying enzymes. Both processes function to alter the positioning of the nucleosome, allowing the DNA within to be either accessible to the transcription machinery or inaccessible. H4 lysine rich tail plays a role in the higher order chromatin folding.The lysines at positions 5, 8, 12 and 16 have 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. Acetyl-Histone H4 (1-21) K5Ac, K8Ac, K12Ac, K16Ac-GG-[Lys(5-FAM)]-has a C-terminal GGK linker labelled with 5-Carboxyfluorescein (5-FAM), a widely used green fluorescent tag. Additionally, this peptide has an uncharged C-terminal amide and is protected from N-terminal modifications by a covalently bonded acetyl group.</p>

<p>Identification of cell penetrating conjugates has aided numerous areas of scientific development. The Drosophila transcription factor Antennapedia contains a homeodomain that can be internalised by cells to the cytoplasm and to the nucleus in a receptor-independent mechanism. The key residues for internalisation have been sequenced (RQIKIWFQNRRMKWKK) and used in several studies to aid entry of recombinant proteins into cells. The peptide sequence described, known as penetratin, was fused to a ligand for Grb-2 resulting in inhibition of downstream Grb-2 signalling events.- Penetratin has also been used in vivo to prime cytotoxic T lymphocytes by conjugating short antigenic peptides to the cell penetrating peptide.On this sequence the N terminal active cysteine has been protected by a 3-Nitro-2-pyridinesulfenyl group. This is a useful modification as it allows this peptide to be used as a carrier peptide in conjugation reactions- this is a particularly useful modification when the peptide-like molecule contains a free thiol group.</p>

<p>(RXR)4XB is a cationic membrane-penetrating peptide and is effective in delivering phosphorodiamidate morpholino oligonucleotides (PMOs) into eukaryotic cells such as Escherichia coli. It contains 5-carboxyfluorescein (5-FAM), a widely used green fluorescent tag.</p>

<p>PD-1 (21-35) peptide is derived from the programmed cell death-1 (PD-1) which interacts with its ligand, PD-L1 to regulate immune homeostasis. PD-1 and its ligand PD-L1 are critical in regulating T cell activation, tolerance and immuno-pathology. PD-1 is an immune checkpoint and guards against autoimmunity through two mechanisms. First, it promotes apoptosis of antigen-specific T-cells in lymph nodes. Second, it reduces apoptosis in regulatory T cells.Several types of cancer cells overexpress PD-L1 in order to escape from the PD-1/PD-L1 immuno-surveillance mechanism. Consequently PD-1 inhibitors and PD-L1 inhibitors could be used as a therapeutic in the treatment of cancers.</p>

<p>Haptoglobin antibody was raised in goat using human haptoglobin as the immunogen.</p>

<p>B-peptide is an arginine-rich cell-penetrating peptide which can be used in a chimeric fusion peptide which includes a morpholino oligomer (PMO). B-peptide enables the convalently conjugated PMOs or peptides to be transported across cell membranes and can therefore be a useful tool in delivering targeted therapies.</p>

<p>β-Amyloid 1-11 (Aβ1-11) is 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. Amyloid β-protein (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 &amp;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.Biotin is C-terminally linked to the peptide via ethylenediaminefor convenient detection and purification. Alternative β-Amyloid fragments and labels are also available, please refer to our peptide catalogue for availability.</p>

<p>LSD-BSA Conjugated Hapten</p>

<p>The Glucagon antibody is a highly specialized product used in Life Sciences research. Glucagon is a hormone that plays a crucial role in regulating blood sugar levels. This antibody specifically targets glucagon and its binding proteins, allowing for precise analysis and detection of glucagon-related processes.</p>

<p>Methamphetamine antibody was raised in mouse using methamphetamine-4-BSA as the immunogen.</p>

<p>CPPs can transport molecules such as nucleic acids, proteins and imaging agents into cells of interest. PR9, Pas non-arginine, is an arginine rich CPP. It is composed of the nona-arginine: R9 and Pas which is a peptide penetrating accelerating sequence and it functions to export molecules out of endocytic vesicles. During a study in which PR9 was in complex with a Quantum dot probe (QD) it was evident that the PR9/QD complex was transported into the cell through endocytosis and co-localises with actins, lysosomes, early endosomes and the nucleus. Due to the non-toxicity of the PR9/QD complex it can be used as a safe vector for biomedical purposes.</p>

<p>Purified native Human CA 72-4 protein</p>

<p>The HIV-RT protein is a natriuretic growth factor that belongs to the group of Recombinant Proteins &amp; Antigens. It plays a crucial role in glycosylation and the production of autoantibodies. The protein also acts as a phosphatase, regulating various cellular processes. Additionally, it has been found to interact with fibrinogen, steroids, isothiocyanates, monoclonal antibodies, fatty acids, histidine, dopamine, and inhibitors. Its diverse functions make it an essential component in many biological processes.</p>

<p>Bacterial cell invasion begins by initially adhering to mucosa of the oro-intestinal, nasorespiratory, or genitourinary tract by specific adhesins. This leads to colonization of the region and ultimately infection. Studies showed acetyl-adhesin can inhibit binding of S. mutans to salivary receptors and can prevent S. mutans colonising the teeth. This suggests the peptide may be a useful antimicrobial agent against bacterial mucosal colonisation, particularly tooth decay.</p>

<p>Neu antibody was raised in mouse using Intact SKBR-3 breast cancer cells as the immunogen.</p>

<p>PHRP antibody was raised in goat using human PTH-rp, amino acid residues: 1-86 as the immunogen.</p>

<p>Carbamoyl phosphate synthase I is the rate-limiting enzyme that catalyses the first committed step of the hepatic urea cycle by synthesising carbamoyl phosphate from ammonia, bicarbonate, and 2 molecules of ATP.The mitochondrial isozyme is designated CPS I and the cytoplasmic enzyme CPS II. CPS II is part of a multifunctional enzyme, called the CAD trifunctional protein of pyrimidine biosynthesis. CPS1 deficiency is a recessively inherited disorder which affects the urea cycle and is due to CPS1 gene mutations. CPS1 causes life-threatening hyperammonemia. Interestingly, carbamoyl phosphate synthase is also implicated in vascular function, as it influences nitric oxide concentrations and nitric-oxide-mediated vasodilation.</p>

<p>The Fibronectin antibody is a monoclonal antibody that specifically targets fibronectin, a glycoprotein involved in cell adhesion and migration. This antibody has been shown to inhibit the activation of fibronectin and its interaction with other proteins, such as alpha-synuclein. It can also block the activity of growth factors and interferons, which are important for immune responses and tissue repair. The Fibronectin antibody is widely used in Life Sciences research to study cell signaling pathways, protein-protein interactions, and the role of fibronectin in various diseases. With its high specificity and affinity, this antibody is a valuable tool for researchers studying fibronectin-related processes.</p>

<p>This sequence corresponds to the peptide bond between mammalian Lys33- (K33) linked Ub proteins- where (GG) corresponds to the C-terminus of the side chain appended Ub.Lys33-linked polyUb chains are assembled by the HECT E3 ligase AREL1. K33-linked polyUb chains have been linked to DNA damage response and in the regulation of innate immunity. Ubiquitination with K33-linked chains also regulates T-cell receptor function and contributes to the stabilization of actin for post-Golgi transport.The proline residues at position 9, and the N-terminal arginine residue of this peptide are isotopically labelled with carbon-13 (11) and nitrogen-15 (5), giving this peptide a mass increase of 16 compared to the unlabelled peptide</p>

<p>Acetly-Claudin-9 is derived from the tight junction protein Claudin-9 which is encoded by the CLDN6 gene and can be found within epithelial cell to cell contacts. Structurally, the Claudin family, of which Claudin-9 is a member, are transmembrane proteins containing two extracellular loops and are involved in maintaining cell polarity and controlling paracellular ion flux.Reduction in the number of Claudins has been associated with tumour formation. This may be due to Claudin role in maintaining cell detachment and migration.Claudin-9 has been shown to be overexpressed in hepatocellular carcinoma (HCC) and has the ability to increase the metastasis of hepatocytes. It further influences the activation of the Stat3 signalling pathway through tyrosine kinase 2. Overall CLDN9 demonstrates itself to be a HCC proto-oncogene.</p>

<p>The CRP calibrator is a high-quality Biological Reagent used in various laboratory applications. It contains specific inhibitors and nucleotide molecules that are essential for accurate calibration of CRP (C-reactive protein) assays. This calibrator is designed to provide precise and reliable results, ensuring the highest standard of performance.</p>

<p>CD45 antibody was raised in mouse using human blood lymphocytes as the immunogen.</p>

<p>The progress of cardiovascular disease (CVD) comes from the damage and necrosis of cardiomyocytes. Although treatment has improved, once these cells are damaged, they cannot be recovered. Therefore, further research into cardiomyocytes is vital. Cardiomyocytes need to be in an exceedingly pure culture for research work. However, this requires identification of these cells from the ESCs present. With the use of a phage biopanning library, this sequence has been shown to have a high affinity to a receptor on the membrane surface of mouse ESC-derived cardiomyocytes. The functionality of this sequence allows it to be used a conjugate for drug or gene delivery to target cardiomyocytes or to purify cardiomyocytes in a research setting.</p>

<p>Mouse monoclonal HA FITC antibody</p>

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

<p>Amino acids 265-275 of microtubule-associated protein 1A (MAP1A) light chain. MAP1A is expressed from the Map1a gene which encodes a precursor polypeptide which is cleaved to produce MAP1A heavy chain and light chain.MAP1A is a structural protein essential for the organisation of neuronal microtubules (MTs) and is abundantly expressed in the mammalian brain. MAP1A is thought to help maintain the neuronal MT network, and modulate synaptic proteins and neuronal survival in the adult central nervous system (CNS). When MAP1A is disrupted in the body it results in problems in coordination, tremors, and late-onset degeneration of cerebellar Purkinje cells.The lysine residue at position 11 of this peptide is isotopically labelled with carbon-13 (6) and nitrogen-15 (2), giving this peptide a mass increase of 8 compared to the unlabelled peptide.</p>

<p>The nuclear transcription factor NF-kappaB up regulates gene expression during inflammation and has critical roles in carcinogenesis, anti-apoptosis, invasion, and metastasis. This has led to the search for specific inhibitors of NF-kappaB to help study NF-kappaB for possible treatments for inflammatory diseases and cancer in the future.NF-kappaB is held in an inactive state in the cytoplasm as a heterodimer containing a p65 subunit. Signalling leads to revealing of a hidden nuclear localisation sequence within p65, phosphorylation of p65, and translocation to the nucleus. p65 binds to DNA and ultimately transcription of specific genes. Therefore, finding an inhibitor of the nuclear localisation sequence and phosphorylation of the p65 subunit is an attractive target.A peptide named PTD-p65-P1 was generated from the p65 DNA binding domain mimicking the phosphorylated state, attached to a membrane-translocating peptide sequence generated from antennapedia (PTD). PTD-p65-P1 has been shown to inhibit NF-kappaB binding to DNA in a dose dependent manner. This activity was also known to be specific for NF-kappaB inhibition. The inhibition of NF-kappaB activity by PTD p65-P1 was shown to be effective against a range of stimuli including cigarette smoke, interleukin 1 and hydrogen peroxide which suggests the inhibitor acts on a common step against these stimuli. The presence of PTD p65-P1 inhibits the cytoplasmic p65 subunit phosphorylation or translocation. The reporter genes tested for NF-kappaB activity showed down regulation of gene expression in the presence of PTD-p65-P1 peptide. The evidence is compelling that this peptide could be a suitable model for a selective specific inhibitor of NF-kappaB activity for therapeutic use in the future.</p>

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

<p>Hyp3-Bradykinin</p>

<p>Thyroid Peroxidase protein is a monoclonal antibody used in Life Sciences research. It is commonly used in studies related to interleukin-6, fatty acid metabolism, and other biological processes. This protein is cytotoxic and has shown interactions with histamine H4 receptors, transthyretin, cystatin, and human serum components. The use of Thyroid Peroxidase protein in experiments involving electrodes has been reported to yield reliable results. Additionally, this protein has been studied for its potential antiestrogenic effects and its role as an antigen in immunological assays. Its viscosity properties make it suitable for various applications in the laboratory setting.</p>

<p>Goat anti Mouse IgG (H + L) secondary antibody (FITC)</p>

<p>Affinity chromatography and protein purification are more successful with highly selective ligands such as short peptides. Phage libraries have been utilised to identify novel peptides for target proteins. IgG1 monoclonal antibody is traditionally purified using protein A but is not ideal due to cost and methodology. EPIHRSTLTALL was found via phage library screening as the most selective ligand possible IgG1, and also highly stable. It binds to the constant region of IgG1 known as humanized anti-Tac (HAT). HAT is a humanized monoclonal antibody against the low-affinity p55 subunit of the interleukin IL-2 receptor.</p>

<p>Peptide H-VFLENVIR^-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>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>

<p>Cilengitide is a cyclic arginine-glycine-aspartic acid (RGD) motif containing peptide that selectively inhibits the integrin alphav subunit. Integrins are cell adhesion molecules which mediate cell-cell and cell-matrix interactions and creating a scaffold for tissue organisation. Integrins also act to regulate cell attachment, proliferation, differentiation, apoptosis and motility.Integrin alphav can form heterodimers with integrin subunits subunits β1, β3, β5, β6, or β8. Cilengitide is a highly specific antagonist of alphavβ3 and alphavβ5 integrins. It also and shows anti-angiogenic effects and inhibits growth and promotes apoptosis of tumour cells that express integrins, such as glioblastoma.Cilengitide has gone on to phase II trials for cancers such as glioblastoma, melanoma, prostate, breast, lung and head and neck cancers.</p>

<p>Shepherdin is an antagonist of the interaction between the apoptosis protein, survivin, and the molecular chaperone, heat shock protein 90 (Hsp90). The sequence of shepherdin corresponds to the site where Hsp90 binds to survivin. Shepherdin therefore has high affinity for Hsp90 and thus disrupts survivin binding and acts as an inhibitor of Hsp90 ATPase function by competing with ATP.The survivin-Hsp90 complex is a regulator of cell proliferation and cell viability in cancer tissue. Shepherdin has anti-cancer properties and can significantly suppress the growth of lung cancer cell lines and acute myeloid leukaemia (AML) by inducing apoptosis.</p>

<p>Portion of EBV</p>

<p>H-DQRVVNGGVPWPSPCPSPSS-OH is a custom peptide that can be synthesized rapidly by our peptide experts in under 2 weeks. H-DQRVVNGGVPWPSPCPSPSS-OH is provided at greater that &gt;95% purity (HPLC) from Cymit Quimica for a variety of research applications. We also offer H-DQRVVNGGVPWPSPCPSPSS-OH in bulk quantities in addition to our standard pack sizes.Please enquire for more information about H-DQRVVNGGVPWPSPCPSPSS-OH at the technical inquiry form on this page</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.This peptide has a covalently bonded N-terminal Biotin tag that can be used for detection and purification and contains a polyethylene glycol spacer (PEG4).</p>