PureCube Ti-NTA MagBeads
Order number: 31501-Ti
Description
PureCube Ti-NTA Magbeads / Magnetic beads were developed for the enrichment of phosphorylated proteins. They can also be used for the purification of his tagged proteins as a secondary function. The affinity matrix is based on 6% cross-linked agarose that was magnetized. The bead ligand is Ti-NTA and the particle diameter is 30 µm. They are very homogeneous in size, yielding in a high degree of reproducibility. The phosphopeptide enrichment with Cube Biotech MagBeads can be automated as it has already been proven in this paper.
| Feature | |
|---|---|
| Usage | Enrichment of phosphopeptides |
| Specificity | Affinity to phosphorylated biomolecules |
| Bead ligand | Ti-NTA |
| Bead size | 20-40 µm (30 µm average) |
| Storage Buffer | 20 mM sodium acetate with 20% ethanol, pH 6.6 |
| Filling quantity | 25% (v/v) suspension (20 µl suspension corresponds to 5 µl magnetic beads) |
| Metal ion capacity | >15 µeqv Ti4+/ml |
| Compatible reagents | 1 mM DTT, 1 mM EDTA, 100% methanol, 100% ethanol, 8 M urea, 6 M guanidinium hydrochloride, 30% (v/v) acetonitrile |
| Compatible reagents | 2-8 °C. Short-term: in in neutral buffer (e.g. 50 mM phosphate, pH 7.0) or for proteomics in equilibration buffer (50% ACN, 50% MeOH, 0.01% acetic acid); Long-term: in neutral buffer with 20% ethanol |
| Shipping | Room Temperature |
Citations
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Lab Results
Automatic Phosphoproteomics for high-throughput projects
Fe-NTA magnetic beads by Cube Biotech have been proven to increase the speed of a high throughput experiment drastically. Leutert et al. (2019) presented the application of PureCube Fe-NTA MagBeads in a procedure that they named R2-P2, which is short for Rapid-Robotic PhosphoProteomics. They used a KingFisherTM Flex for their robotic runs to fully automize the phosphopeptide enrichment process.
Fe-NTA magnetic beads by Cube Biotech have been proven to increase the speed of a high throughput experiment drastically. Leutert et al. (2019) presented the application of PureCube Fe-NTA MagBeads in a procedure that they named R2-P2, which is short for Rapid-Robotic PhosphoProteomics. They used a KingFisherTM Flex for their robotic runs to fully automize the phosphopeptide enrichment process.
Figure 1: Schematic depiction of the setup of a R2-P2 assay using a KingFisherTM Flex. The robotic configuration allows for loading of eight different 96-well plates. Each plate can be rotated into position under a 96-pin magnetic head that drops down inside the 96-well plate to release, bind, or agitate the magnetic microspheres in solution. In the first robotic run, peptides are captured from lysates by carboxylated magnetic beads, purified, and eluted by digestion at 37°C. Eluted peptides are dried down and can be resuspended for total proteome analysis by LC-MS/MS and/or for automatic phosphopeptide enrichment. Phosphopeptides are enriched using a second robotic run on the KingFisherTM Flex, using Fe-IMAC, Ti-IMAC, Zr-IMAC, or TiO2 magnetic microspheres, and analyzed by LC-MS/MS to obtain the phosphoproteome.Source: Leutert et al. (2019)
Superiority over other phosphopeptide enrichment methods
Leutert et al. compared three different types of IMAC beads (including our PureCube Fe-NTA) and TiO2 microspheres. As it can be seen in figure 2 our PureCube Fe-NTA magnetic beads presented themselves to be the best option for phosphopeptide enrichment. With our Fe-NTA MagBeads the most unique phosphopeptides (Fig. 2 A and C) were enriched with the highest efficiency (Figure 2 B).
Leutert et al. compared three different types of IMAC beads (including our PureCube Fe-NTA) and TiO2 microspheres. As it can be seen in figure 2 our PureCube Fe-NTA magnetic beads presented themselves to be the best option for phosphopeptide enrichment. With our Fe-NTA MagBeads the most unique phosphopeptides (Fig. 2 A and C) were enriched with the highest efficiency (Figure 2 B).
Figure 2: Comparison of phosphopeptide enrichment performance between four different products/methods. A: Number of unique phosphopeptides identified by the different enrichments (mean +/- SD, n = 3). B: Phosphopeptide enrichment efficiency shown as the fraction of phosphorylated peptides over total peptides (mean +/- SD, n = 3). C: Venn diagram of identified phosphopeptides by the different phosphopeptide enrichment methods.Source: Leutert et al. (2019)
The best product for the best prize
Analyzing and comparing products from various manufacturers and suppliers can often prove to be a laborious task. The presence of varying concentrations and volumes across different suppliers can lead to confusion when trying to identify the optimal cost-benefit ratio. Recognizing these challenges, Cube Biotech has undertaken the effort to compile a comprehensive overview of prices for the frequently utilized phosphopeptide enrichment products (see Fig. 2 C). Our intention is to provide researchers with a clearer understanding of the prevailing pricing landscape in the market, facilitating informed decision-making.
Analyzing and comparing products from various manufacturers and suppliers can often prove to be a laborious task. The presence of varying concentrations and volumes across different suppliers can lead to confusion when trying to identify the optimal cost-benefit ratio. Recognizing these challenges, Cube Biotech has undertaken the effort to compile a comprehensive overview of prices for the frequently utilized phosphopeptide enrichment products (see Fig. 2 C). Our intention is to provide researchers with a clearer understanding of the prevailing pricing landscape in the market, facilitating informed decision-making.
Figure 3: Cube Biotech does not only offer the best single product for phosphopeptide enrichment, but also the most prize efficient one. The products of Competitor G are ranging at about half the volume of beads you get for 200 USD in comparison to Cube Biotech. Suspension rates vary only slightly with 25% for the products of Cube Biotech, to 20% for Competitor G.FAQ
Can I get the datasheet for the Ti-NTA MagBeads?
What can I do with Zr-NTA beads?
They are meant to be used as the matrix to bind and thus enrich phophopeptides.
How does the phosphopeptide enrichment process work?
Can I enrich all phosphopeptides using Ti-NTA?
No, this is not possible. Not all phosphopeptides bind to Ti-NTA beads. As shown in figure 2 multiples bead types must be used to cover all phosphopeptides off a cell. Because of that we also offer Fe-, Zr- and Al-NTA beads.
