Protein Quantification Products & Reviews

Target Sufficiency® is the ability of a target system to respond to a therapeutic. It reflects the abundance and forms of the drug target protein, as well as other key system proteins that connect the target to disease phenotypes and enable response. Assessment of the target system requires an analysis platform that can simultaneously capture multiple precise protein measurements.

Challenges are welcome. When you are confident.

For low-volume measurements

The Queen of high-throughput protein stability characterization. Aunty is the fastest and highest throughput protein stability characterization tool on the planet.

SignalChem(part of Sino Biological) offers one of the most comprehensive ranges of biologically active recombinant enzymes as well as a broad range of high-quality, low-cost enzyme activators and inhibitors of different classes of enzymes including protein kinases, phosphatases, and epigenetic enzymes.

Complete PAGE protein analysis system

The FRETWorks™ S•Tag™ Assay is a FRET-based method that enables extremely sensitive detection of S•Tag fusion proteins in minutes with a homogeneous format.

ViBE Protein Analysis PlatformPowered by AMMP Technology, the ViBE platform allows rapid design and configuration of protein assays to achieve highly-sensitive detection and quantitation of proteins in complex biological samples with real-time results. The ViBE platform …    •   Open assay design allows use of your own antibodies and the ability to define sensitivity, dynamic range, and speed requirements for efficient process…

The H2A.X Phosphorylation Assay Kit (Flow cytometry) is a cell based assay formatted for flow cytometric detection of levels of phosphorylated Histone H2A.X. Cells are cultured in microplates, treated with agents that induce DNA damage or apoptosis, which stimulates H2A.X phosphorylation. Cells are then fixed and permeabilized in preparation for staining and detection. Histone H2A.X phosphorylated at serine 139 is detected by…

The TRAPeze® Telomerase Detection Kit is a highly sensitive in vitro assay system for detecting telomerase activity. The assay is a one-buffer, two-enzyme, system utilizing PCR to enhance the sensitivity of telomerase detection in small samples.

The TRAPEZE® XL Kit is a highly sensitive in vitro assay for the fluorometric detection of telomerase activity. As in the original TRAPEZE® Kit, primer sequence modifications that reduce amplification artifacts and an internal PCR control are included. In addition, the TRAPEZE® XL Kit uses fluorescence energy transfer (ET) primers to generate fluorescently labeled TRAP products which permit nonisotopic, quantitative analysis o…

GST fusion-protein, corresponding to the p21-binding domain (PBD, residues 67-150) of human PAK-1 provided bound to glutathione agarose. Specifically binds to and precipitates Rac-GTP and cdc42-GTP from cell lysates.

GST-tagged fusion protein, corresponding to residues 7-89 of mouse Rhotekin Rho Binding Domain, expressed in E.coli and bound to glutathione-agarose. Specifically binds to and precipitates GTP-Rho, but not GDP-Rho from cell lysates.

A GST-tagged fusion protein, corresponding to residues 7-89 of mouse Rhotekin Rho Binding Domain, expressed in E. coli. Provided bound to glutathione-agarose. Purity 90%.

This kit contains nonradioactive components for radiolabeling and purifying histone H4 peptide with [3H]-acetyl CoA. The radiolabeled peptide is a suitable substrate for assay of HDAC activity. HeLa nuclear extract, which is rich in histone deacetylase activity, is included as a positive control. The HDAC inhibitor sodium butyrate is provided to demonstrate specificity of the deacetylase activity.

Accessory reagent kit for the analysis of histone methyltransferase activity.

This assay is a simple two-step procedure performed in a microtiter plate. In the first step samples are incubated with the HDAC assay substrate, allowing deacetylation of the fluorometric substrate. Next, Activator Solution releases a fluorophore from the deacetylated substrate or standard.

This kit is designed to measure the phosphotransferase activity in a kinase cascade reaction initiated by activated Raf-1. Recombinant unactive MEK1 is the substrate for Raf-1. Once activated by Raf-1, MEK1 can phosphorylate and thereby activate another kit component, recombinant unactive MAP Kinase 2/Erk2. Activation of MAP Kinase 2/Erk2 is determined by phosphorylation of myelin basic protein (MBP), in vitro. Phosphorylation…

The assay kit is designed to measure B-Raf dependent phosphotransferase activity in a kinase cascade reaction using recombinant MEK1, unactive as a B-Raf substrate. Recombinant MAPK2/Erk2, unactive is phosphorylated and activated by the activated MEK1 leading to phosphorylation of a MAP Kinase substrate, myelin basic protein (MBP). [γ-32P]ATP is the final phosphate donor.

Intended for the assay of recombinant B-Raf (supplied) kinase activity with experimental variables as determined by the user. For assay of B-Raf activity from a cell lysate, we recommend an immunoprecipitation-kinase assay, using anti-B-Raf antibody (07-453).

Intended for the assay of recombinant Raf-1 (supplied) kinase activity, with experimental variables as determined by the user. For assay of Raf-1 activity from a cell lysate, we recommend an immunoprecipitation-kinase assay, using anti-Raf-1 antibody (07-396).

The 384 well format kit is a newer version of the tried and true non-radiographic HDAC assay. As in the previous kit, samples are first incubated with the HDAC Assay substrate, allowing deacetylation of the fluorometric substrate. After incubation, the activator solution is added, and releases a fluorophore from the deacetylated substrate or standard. The sample is then put into a microplate reader and fluorescence (i.e free/c…

This assay is a simple two-step procedure performed in a microtiter plate. In the first step, samples are incubated with the HDAC assay substrate, allowing deacetylation of the substrate. Next, the Activator Solution releases p-nitroanilide from the deacetylated substrate or standard.

The EZ-Zyme™ Chromatin Prep kit allows ChIP analysis at nucleosome resolution by performing complete or partial digestions with a proprietary enzymatic cocktail to obtain chromatin fragments of on average one to a few nucleosomes in length. Compared to sonication, this procedure not only allows mapping the protein-DNA association at a higher resolution, but also renders the subsequent immunoprecipitation more efficient due to…

The Rac1/Cdc42 Activation Assay provides an effective method for detecting Rac and Cdc42 activity in cell lysates. This assay uses the downstream effector of Rac/Cdc42, p21-activated protein kinase (PAK1), to isolated the active GTP-bound form of Rac/Cdc42 from the sample. The p21 binding domain (PBD) of PAK1 is expressed as a GST-fusion protein and coupled to agarose beads. After precipitation, an immunoblot is performed and…