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Monitoring RNA unwinding by the transcription termination factor Rho from Mycobacterium tuberculosis. | LitMetric
Transcription termination factor Rho is a ring-shaped, homo-hexamieric RNA translocase that dissociates transcription elongation complexes and transcriptional RNA-DNA duplexes (R-loops) in bacteria. The molecular mechanisms underlying these biological functions have been essentially studied with Rho enzymes from Escherichia coli or close Gram-negative relatives. However, phylo-divergent Rho factors may have distinct properties. Here, we describe methods for the preparation and in vitro characterization (ATPase and helicase activities) of the Rho factor from Mycobacterium tuberculosis, a specimen with uncharacteristic molecular and enzymatic features. These methods set the stage for future studies aimed at better defining the diversity of enzymatic properties of Rho across the bacterial kingdom.
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