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cholesterol catabolism transcriptional regulator KstR KstR, a protein characterized in Mycobacterium tuberculosis (MTB) and M. smegmatis is a TetR family transcriptional regulator that is essential for pathogenesis in MTB. In controls the expression of about 80 proteins involved in the earlier stages of cholesterol catabolism. KstR binds not to cholesterol itself, but to catabolites found early in the degradation pathway.
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