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Crystallographic analysis of murine constitutive androstane receptor ligand-binding domain complexed with 5alpha-androst-16-en-3alpha-ol.


ABSTRACT: The constitutive androstane receptor (CAR) is a member of the nuclear receptor superfamily. In contrast to classical nuclear receptors, which possess small-molecule ligand-inducible activity, CAR exhibits constitutive transcriptional activity in the apparent absence of ligand. CAR is among the most important transcription factors; it coordinately regulates the expression of microsomal cytochrome P450 genes and other drug-metabolizing enzymes. The murine CAR ligand-binding domain (LBD) was coexpressed with the steroid receptor coactivator protein (SRC-1) receptor-interacting domain (RID) in Escherichia coli. The mCAR LBD subunit was purified away from SRC-1 by affinity, anion-exchange and size-exclusion chromatography, crystallized with androstenol and the structure of the complex determined by molecular replacement.

SUBMITTER: Vincent J 

PROVIDER: S-EPMC1952403 | BioStudies | 2005-01-01

SECONDARY ACCESSION(S): U59302

REPOSITORIES: biostudies

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