METHODS OF LABELING TRANSIENTLY EXPRESSED PROTEINS IN LARGE-SCALE EUKARYOTIC CELL CULTURES

摘要

The present invention is based on observations that transiently transfecting large- scale eukaryotic cell cultures with a polynucleotide encoding a protein of interest can be used to rapidly produce the large quantities of labeled proteins required for various biochemical techniques such as spectroscopy, microscopy, and crystallography, and applications including protein structure determination, protein tracing and/or localization, diagnostic and therapeutic applications, and affinity experiments. Thus, the present invention provides methods for rapidly producing large quantities of labeled proteins by using transient transfection of large-scale eukaryotic cell cultures, which are then grown in a chemically defined labeling medium that includes labeled amino acids. The present invention is also directed to methods of using the labeled proteins produced by the novel labeling methods for use in various techniques.