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产品介绍
The PROTAC Optimization Kit for BET Bromodomain-Von Hippel Lindau (VHL) Binding is designed for testing and profiling PROTACs directed against the BET Bromodomain family and VHL complex. VHL is a substrate recognition component of E3 protein ligase complex and is linked by Elongin C to a heterodimeric Cul2/Rbx1 module, which functions as a potent activator of the ubiquitination of target proteins by an E2 conjugating enzyme. Elongin B interacts with the complex through Elongin C and stabilizes the binding of Elongin C to VHL. Mutations in VHL are associated with the inherited von Hippel-Lindau cancer syndrome and numerous forms of renal cell carcinoma. With this kit, only three simple steps on a microtiter plate are required for PROTAC activity
detection. First, a sample containing PROTAC is incubated with VHL and BRD3(BD2), one of the
BET bromodomains. Next, acceptor beads are added, then donor beads, followed by reading the Alpha-counts.
背景介绍 Lymphocyte-activation gene 3 (LAG3, also known as CD223) is a cell surface receptor that negatively regulates the activation and proliferation of T cells. Fibrinogen-like protein 1 (FGL1), a liver-secreted protein, is a functional LAG3 ligand. Blockade of the FGL1-LAG3 interaction is implicated in promoting antitumor immunity. 产品介绍 The LAG3:FGL1[Biotinylated] Inhibitor Screening Assay Kit is designed for screening and profiling inhibitors of LAG3:FGL1. The key to this kit is the high sensitivity of detection of biotin-labeled FGL1 by streptavidin-HRP. Only a few simple steps on a microtiter plate are required for the assay. First, LAG3 is attached on a nickel-coated 96-well plate. Next, biotinylated FGL1 is incubated with LAG3 on the plate. Finally, the plate is treated with streptavidin-HRP followed by addition of an HRP substrate to produce chemiluminescence, which can be measured using a chemiluminescence reader.
询价产品介绍 Casitas B lineage lymphoma (c-Cbl) is a multifunctional protein with ubiquitin E3 ligase activity capable of degrading diverse sets of proteins. c-Cbl is a ubiquitously expressed mammalian protein that plays a vital role in fundamental cellular functions including cell survival, migration, and proliferation. Recent evidence suggests a critical role for c-Cbl in angiogenesis and human solid organ tumors, making it a potential drug target in cancer immunotherapy. The c-CBL TR-FRET Assay Kit is designed to measure c-CBL auto-ubiquitination activity in a homogeneous 384 reaction format. It utilizes Biotin-labeled Ubiquitin and a terbium-labeled anti-c-CBL antibody to complete the TR-FRET pairing. This FRET-based assay requires no time-consuming washing steps, making it especially suitable for high throughput screening applications.
询价背景介绍 V-domain Ig Suppressor of T cell activation (VISTA, or B7-H5) is a type I transmembrane protein that functions as an immune checkpoint. V-Set and Immunoglobulin domain containing 3 (VSIG-3, or IGSF11) is a ligand for VISTA which, when bound on activated T cells, inhibits their proliferation and the production of cytokines and chemokines. VSIG-3 expression is elevated in many cancers, especially glioma and melanoma, so the blockade of the VSIG-3/VISTA pathway represents a promising potential cancer immunotherapy strategy. 产品介绍 The VSIG-3:VISTA[Biotinylated] Inhibitor Screening Assay Kit is designed for screening and profiling inhibitors of VISTA binding to VSIG-3. This kit comes in a convenient 96-well format, with biotin-labeled VISTA, purified VSIG-3, streptavidin-labeled HRP, and assay buffer for 100 binding reactions. The key to this kit is the high sensitivity of detection of biotin-labeled VISTA by streptavidin-HRP. Only a few simple steps on a microtiter plate are required for the assay. First, VSIG-3 is coated on a 96-well plate. Next, biotinylated VISTA is incubated with VSIG-3 on the plate. Finally, the plate is treated with streptavidin-HRP followed by addition of an HRP substrate to produce chemiluminescence, which can be measured using a chemiluminescence reader.
询价背景介绍 The binding of Programmed Cell Death Protein 1 (PD-1), a receptor expressed on activated T-cells, to its ligands, PD-L1 and PD-L2, negatively regulates immune responses. The PD-1 ligands are found on most cancers, and PD-1:PD-L1/2 interaction inhibits T cell activity and allows cancer cells to escape immune surveillance. The PD-1:PD-L1/2 pathway is also involved in regulating autoimmune responses, making these proteins promising therapeutic targets for a number of cancers, as well as multiple sclerosis, arthritis, lupus, and type I diabetes. 产品介绍 The recombinant expression vectors are designed to express human engineered T cell receptor (TCR) activator and mouse PD-L1 (GenBank Accession #NM_021893) in mammalian cells. The transfected cells can be used in conjunction with mouse PD-1/NFAT Reporter/Jurkat T cells (BPS Bioscience #79762) to study the interactions of PD-1 with PD-L1 ligand in a cellular context and to screen for modulators of this signaling pathway. Functional Validation and Assay Performance: In this assay, mouse PD-1/NFAT Reporter/Jurkat T cells are used as effector cells; HEK293 cells transiently transfected with the PD-L1 vector over-express mouse PD-L1 and an engineered T cell receptor (TCR) activator and are used as target cells. When these two cells are co-cultivated, TCR complexes on effector cells are activated by TCR activator on target cells, resulting in expression of the NFAT luciferase reporter. However, PD1 and PD-L1 ligation prevents TCR activation and suppresses the NFAT-responsive luciferase activity. This inhibition can be specifically reversed by anti-PD1 or anti-PD-L1 antibodies. Mouse PD1/PD-L1 neutralizing antibodies block PD1:PD-L1 interaction and promote T cell activation, resulting in reactivation of the NFAT responsive luciferase reporter.
询价背景介绍 HPK1 (MAP4K1) or Hematopoietic progenitor kinase 1 is a hematopoietic cell-restricted member of the Ste20 serine/threonine kinase super family. It is a tissue-specific upstream activator of the MEKK/JNK/SAPK signaling pathway. HPK1 diminishes T cell receptor (TCR) signaling activity and T cell proliferation by phosphorylating the adaptor protein SLP-76, suggesting HPK1 could be a novel target for anti-tumor immunotherapy. 产品介绍 The HPK1 Assay Kit is designed to measure HPK1 activity for screening and profiling applications using Kinase-Glo® MAX as a detection reagent.
询价产品介绍 Human Casitas B-lineage lymphoma proto-oncogene b (MDM2) is an E3 ubiquitin-protein ligase that functions as a negative regulator of T-cell activation. It is a potential drug target in cancer immunotherapy. The MDM2 TR-FRET Assay Kit is designed to measure MDM2 auto-ubiquitination activity in a homogeneous 384 reaction format. It utilizes biotin-labeled ubiquitin and a terbium-labeled anti-GST antibody to complete the TR-FRET pairing. This FRET-based assay requires no time-consuming washing steps, making it especially suitable for high throughput screening applications.
询价产品介绍 The PROTAC Optimization Kit for BET Bromodomain-Cereblon Binding is designed for testing and profiling of PROTACs directed against BET Bromodomain family and Cereblon complex. Cereblon (CRBN) is a Substrate recognition component of a DCX (DDB1-CUL44-Rbx1) E3 protein ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. The PROTAC Optimization Kit for BET Bromodomain-Cereblon Binding comes in a convenient AlphaLISA® format, with dBET1 PROTAC, Immuno Buffer 1, and purified BRD3(BD2) and CRBN for 384 reactions. (+)JQ1 is included as a control inhibitor of PROTAC binding to BRD3(BD2). With this kit, only three simple steps on a microtiter plate are required for PROTAC activity detection. First, a sample containing PROTAC is incubated with CRBN and BRD3(BD2), one of BET bromodomains. Next, acceptor beads are added, then donor beads, followed by reading the Alpha-counts.
询价产品介绍 The fluorogenic SHP-2 substrate, DiFMUP, is added to the mixture of SHP-2 (BPS Bioscience #79018) and SHP-2 Activating Peptide (BPS Bioscience #79319). DiFMU fluorophore is released and can then be measured using a fluorescence reader.
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