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Nucl Recept Signal. 2005;3:e001. Epub 2005 Oct 21.

Single-step purification of full-length human androgen receptor.

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1
Department of Pharmacology and Cancer Biology, Duke University Medical Center, Durham, NC 27710, USA.

Abstract

The full-length human androgen receptor with an N-terminal biotin acceptor peptide tag was overexpressed in Spodoptera frugiperda cells in the presence of 1 microM dihydrotestosterone. Site-specific biotinylation of BAP was achieved in vivo by co-expression of E. coli biotin holoenzyme synthetase. The androgen receptor was purified by single-step affinity chromatography using Streptavidin Mutein Matrix under native conditions. The resultant protein was active, stable, 95% homogeneous, and we obtained sufficient yield for use in functional and structural studies.

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