FAQ-339
How can I improve the expression of proteins containing hydrophobic regions?
The addition of either 1% Octylglycoside or 1% Dodecylmaltoside to the lysate might help to solubilize proteins containing large hydrophobic regions. The detergents should be added directly to the reaction mix.
Related products
QIAexpress Type IV Kit
The QIAexpress System provides materials for expression, purification, detection, and assay of His-tagged proteins.
Ni-NTA Spin System
Ni-NTA silica combines Ni-NTA with a macroporous silica support material optimized to suppress nonspecific hydrophobic interactions. Ni-NTA Spin Columns (His-protein purification spin columns) in the Ni-NTA Spin Kit and available separately provide Ni-NTA silica in a convenient microspin format for easy preparation of multiple samples in parallel. They provide a simple method for functional screening of engineered proteins, selection of clones expressing full-length translation products and comparison of expression levels. Each spin column can purify up to 300 µg of His-tagged protein. Like all Ni-NTA matrices, Ni-NTA spin columns can be used for one-step protein purification under native or denaturing conditions. The Ni-NTA Spin Kit is a complete kit for spin purification of His-tagged proteins. It can be automated on the QIAcube Connect (see image "QIAcube Connect").