Halo-Trap Magnetic Agarose are affinity beads for immunoprecipitation of Halo-tag fusion proteins. It comprises a Halo-tag Nanobody /VHH conjugated to Magnetic Agarose beads.
On-bead enzyme assays
ChIP/ RIP analysis
|Product Halo-Trap Magnetic Agarose||Size 250 µL (10 reactions)||Code otma-10||Price $ 275||Buy +|
|Product Halo-Trap Magnetic Agarose||Size 500 µL (20 reactions)||Code otma-20||Price $ 475||Buy +|
|Product Halo-Trap Magnetic Agarose||Size 2.5 mL (100 reactions)||Code otma-100||Price $ 2050||Buy +|
|Product Halo-Trap Magnetic Agarose||Size 5 mL (200 reactions)||Code otma-200||Price Please inquire|
|Product Halo-Trap Magnetic Agarose||Size 10 mL (400 reactions)||Code otma-400||Price Please inquire|
|Product Halo-Trap Magnetic Agarose Kit||Size 500 µL (20 reactions)||Code otmak-20||Price $ 595||Buy +|
|Product Binding Control Magnetic Agarose||Size 500 µL (20 reactions)||Code bmab-20||Price $ 75||Buy +|
|Product Halo VHH, recombinant binding protein||Size 250 µL||Code ot-250||Price Please inquire|
Dissociation constant KD of 2 nM
Wash buffer compatibility
2 M urea, 2 M NaCl, 10 mM DTT, 2 % Nonidet P40 Substitute, 2 % Triton X-100
Coupled Nanobody/ VHH
Recombinant, monoclonal anti-Halo single domain antibody (sdAb) fragment
Bead size: ~ 40 µm (cross-linked 6 % Magnetic Agarose beads)
Storage buffer: 20 % EtOH
- SDS sample buffer
- 0.1 mM citric acid pH 3.0
Instead of elution, we recommend on-bead assays like on-bead digestion for MS analysis.
Compatibility with mass spectrometry
The Halo-Trap is optimized for on-bead digestion. Complete tryptic digest results in 6-7 peptides.
Shipped at ambient temperature. Upon receipt store at 4°C. Stable for one year.
How to cite this product
Should I use an N-terminal or C-terminal fusion tag?
Both the N-terminal or C-terminal fusion tag work well with the traps.
How can I avoid unspecific protein interactions binding to the trap?
How can I elute bound proteins from a trap in their native state?
You can elute your fusion protein of interest with 0.2 M glycine pH 2.5 at room temperature. Pipette the beads up and down for 60-120 seconds and repeat this step. Ensure to neutralize your supernatant immediately afterwards by adding 1 M Tris base pH 10.4.
How many mammalian cells are required for an immunoprecipitation reaction?
For one immunoprecipitation reaction, we recommend using ~10^6 - 10^7 mammalian cells. The yield is also dependent on the expression level of your protein of interest and the interaction partners.
How much cell extract should I use for an immunoprecipitation reaction?
For other type of cells than mammalian cells, we recommend using 0.5 - 1.0 mg of cell extract.
Do I need to elute bound proteins from the beads for mass spectrometry analysis?
Do I need to elute my protein of interest from the beads for enzymatic assays?
What is the amount of trap slurry I need for one immunoprecipitation reaction?
25 µL slurry are sufficient for one pull-down reaction as the affinity of the traps is very high.
- Halo Trap recognizes Halo fusion proteins that are already bound to chloralkane-based ligands of the Halo-tag, e.g. dyes, biotin, etc.
- Halo-Trap can be used for affinity purification
- Bound Halo-fusion protein can be eluted without protease
- Structure and function are characterized
Halo-Trap Magnetic Agarose Kit
The Halo-Trap Magnetic Agarose is also available in a kit, including:
- Halo-Trap Magnetic Agarose
- lysis*, wash and elution buffers
*The lysis buffer provided is suitable for mammalian cells. For other cell types use another suitable lysis buffer.
Binding Control for Magnetic Agarose Beads
- Control for unspecific binding of proteins, DNA, etc. to beads
- Pre-clearing of cell lysate
- Binding Control for Halo-Trap Magnetic Agarose
Only for research applications, not for diagnostic or therapeutic use!