Structure
Rev-erbβ is similar to Rev-erbα in its protein structure and function as a transcriptional repressor. The crystal structure of an unliganded Rev-erbβ ligand-binding domain (LBD) has been resolved (see figure to the right) and shows an extremely small ligand-binding pocket. However, Rev-erbβ has been shown to interact with heme, which appears important for its function.
The structure of Rev-erbβ complexed with heme (see figure to the left) shows a substantial movement of helices 1 (N-terminus ) and 11 (C-terminus ) which opens up a large binding pocket in the interior of the protein that is able to accommodate this ligand.
Read more about this topic: Rev-Erb A Beta
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