Expression and Solubilization of a Recombinant Human Neurokinin-1 Receptor in Insect Cells

Abstract
The human neurokinin-1 receptor has been expressed in insect cells using a recombinant baculovirus. The expression level is about 10 times higher than that obtained in mammalian cells. The recombinant receptor was solubilized with CHAPS, and a PEG precipitation procedure was shown to be effective in regaining high affinity substance P binding. This system should allow large scale purification of the human neurokinin-1 receptor.