Dengue protease is a two-component enzyme and is an important drug target against dengue virus. The
protease activity and protein stability of dengue nonstructural protein 3 (NS3) require a co-factor region
from a four-span membrane protein NS2B. A natural form of dengue protease containing full-length
NS2B and NS3 protease domain NS2BFL-NS3pro will be useful for dengue drug discovery. In current
study, detergents that can be used for protease purification were tested. Using a water soluble protease
construct, 39 detergents were selected for both NS2B and NS2BFL-NS3pro purification. The results
showed that 18 detergents were able to sustain the activity of the natural dengue protease and 11 detergents
could be used for NS2B purification. The results obtained in this study will be useful for
biochemical and biophysical studies on dengue protease.