Academic Journals Database
Disseminating quality controlled scientific knowledge

Cell-Free Expression of Protein Kinase A for Rapid Activity Assays

Author(s): Donna M. Leippe | Kate Qin Zhao | Kevin Hsiao | Michael R. Slater

Journal: Analytical Chemistry Insights
ISSN 1177-3901

Volume: 2010;
Issue: 5;
Start page: 25;
Date: 2010;
Original page

Functional protein analysis often calls for lengthy, laborious in vivo protein expression and purification, and can be complicated by the lack of stability of the purified protein. In this study, we demonstrate the feasibility of a simplified procedure for functional protein analysis on magnetic particles using cell-free protein synthesis of the catalytic subunit of human cAMP-dependent protein kinase as a HaloTagĀ® fusion protein. The cell-free protein synthesis systems provide quick access to the protein of interest, while the HaloTag technology provides efficient, covalent protein immobilization of the fusion protein, eliminating the need for further protein purification and minimizing storage-related stability issues. The immobilized cPKA fusion protein is assayed directly on magnetic beads and can be used in inhibitor analyses. The combination of rapid protein synthesis and capture technologies can greatly facilitate the process of protein expression and activity screening, and therefore, can become a valuable tool for functional proteomics studies.
RPA Switzerland

Robotic Process Automation Switzerland


Tango Rapperswil
Tango Rapperswil