"Cube Biotech"

Supplier: Cube Biotech

The Ultrasolute family evolved from the first amphipol A8-35 is used for highly efficient solubilization and stabilization of membrane proteins without the use of detergents while preserving their activity. They demonstrate tolerance to moderate concentrations of divalent cations and exhibit no absorption at wavelengths >250 nm.

Supplier: Cube Biotech

The SMALP products have been developed for biomedical purposes, in particular, for the solubilization of (biological) lipid membranes and isolation & purification of integral membrane proteins.
After solving the SMA + buffer powder in water, the product is ready-to-use. It can primarily used for all cell membrane hosts, including bacteria, yeast, and human cells. After successful solubilization of the membrane protein, the protein can be purified using affinity chromatography. For membrane protein purification we recommend using the Rho1D4-tag. Cube Biotech offers matching products for this purpose.

Supplier: Cube Biotech

Enhanced GFP (eGFP) is a modified version of GFP that exhibits even stronger fluorescence for easier detection.

Supplier: Cube Biotech

PureCube epoxy activated MagBeads are your best option to couple biomolecules that carry free-standing amine (NH₂) and thiol (SH) groups.

Supplier: Cube Biotech

AASTYs (Acrylic acid-co-styrenes) - like AASTY 11-50 - are highly-alternating copolymers, well-suited for the generation of native lipid nanodiscs. They are a 2022 novel developed series for membrane protein solubilization & stabilization. AASTY 11-50 gets its name from its molecular weight and Acrylic Acid : Styrene Ratio. These varying ratios of acrylic acid to styrene contribute to the hydrophilic properties of our AASTYs. In general lighter AASTYs, like 6-45 tend to be more aggressive, while heavier AASTYs, such as 11-50 show higher thermodynamic stability.

Every membrane protein solubilization needs to undergo a screening process in before. The characteristic phospholipid environment surrounding the different membrane proteins in question performs differently well with each polymer. To support you in this process, we offer a handy Screening Kit for AASTYs to test them all.

We recommend the two following publications if you would like to get further information: Smith et al. 2020 & Timcenko et al. 2022

Supplier: Cube Biotech

PureCube Ni-IDA MagBeads were developed by Cube Biotech for His-tag protein purification.

Supplier: Cube Biotech

Enhanced GFP (eGFP) is a modified version of GFP that exhibits even stronger fluorescence for easier detection.

Supplier: Cube Biotech

This product is a pre-assembled nanodisc. Its intended purpose is to stabilize a cell-free expressed membrane protein.

Supplier: Cube Biotech

AASTYs (Acrylic acid-co-styrenes) - like AASTY 6-50 - are highly-alternating copolymers, well-suited for the generation of native lipid nanodiscs. They are a 2022 novel developed series for membrane protein solubilization & stabilization. AASTY 6-50 gets its name from its molecular weight and Acrylic Acid : Styrene Ratio. These varying ratios of acrylic acid to styrene contribute to the hydrophilic properties of our AASTYs. In general lighter AASTYs, like 6-50 tend to be more aggressive, while heavier AASTYs, such as 11-45 show higher thermodynamic stability.

The exact composition of AASTY copolymers shows different extraction efficiency, depending on the lipid composition of the lipid bilayers being formulated into nanodiscs. As AASTY is made using controlled radical polymerization techniques, the dispersity of polymer molecular weight distribution is low, and the molecular weights are controlled. This means that excess AASTY copolymer can be removed by dialysis after nanodisc formation. Based on previous findings on SMA, it is the expectation that AASTY of different molecular weights will display different rates of nanodisc formation, extraction efficacy, and stability of resulting nanodiscs.

Every membrane protein solubilization needs to undergo a screening process before. The characteristic phospholipid environment surrounding the different membrane proteins in question performs differently well with each polymer. To support you in this process we offer a handy Screening Kit for AASTYs to test them all. Additionally, we recommend the two following publications if you would like to get further information: Smith et al. 2020 & Timcenko et al. 2022

Supplier: Cube Biotech

The coronavirus, also known as SARS-CoV-2, enters the cell by using its surface SPIKE. SPIKE is processed on the cell's surface by TMPRSS2, a serine protease. It then subsequently binds to ACE2 a cell surface receptor.

Supplier: Cube Biotech

PureCube Ni-INDIGO magnetic beads/MagBeads were developed by Cube Biotech for His-tag protein purification.

Supplier: Cube Biotech

This product is a pre-assembled nanodisc. Its intended purpose is to stabilize a cell-free expressed membrane protein.

Supplier: Cube Biotech

With diisobutylene-maleic acid (DIBMA), you can directly extract membrane proteins from cells without an intermediate step of detergent solubilization, like with SDS, which would usually interfere with the protein's function. Another advantage of DIBMA as a tool for protein solubilization is the lack of an absorbance maxima at 280 nm. In comparison to SMAs, this would usually interfere with protein quantification, as aromatic amino acids absorb at the same spectrum. PureCube DIBMA is lyophilized from two different buffer solutions (HEPES or TRIS) to ensure a stable pH of 7.5, which is ideal for most protein solubilizations. A good publication to read even more details about DIBMA is Oluwole et al. 2017.

Supplier: Cube Biotech

The PureCube Ni-NTA Compact cartridge is an IMAC chromatography column prepacked with PureCube Ni-NTA resin.

Supplier: Cube Biotech

This is an antibody specifically for targeting a Strep-(WSHPQFEK)-tag on a protein.

Supplier: Cube Biotech

PureCube Maleimide Agarose resin is your best option to couple biomolecules that carry thiol (SH) groups.