Medical Definition of Lactose repressor

1. Protein (tetramer of 37 kD subunits) that normally binds with very high affinity to the operator region of the lactose operon and inhibits transcription of the downstream genes by blocking access of the polymerase to the promoter region. When the lactose repressor binds allolactose, its binding to the operator is reduced and the gene set is derepressed. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)



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Lexicographical Neighbors of Lactose Repressor

lactoprotein
lactoproteins
lactorrhoea
lactory
lactosamine
lactoscope
lactoscopes
lactose
lactose-litmus agar
lactose carrier protein
lactose factors
lactose intolerance
lactose intolerant
lactose operon
lactose permease
lactose repressor (current term)
lactose synthase
lactoses
lactosuria
lactosyl
lactosylceramidase
lactosylceramide
lactosylceramides
lactotherapy
lactotransferrin
lactotroph
lactotrophic
lactotrophs
lactotropin
lactovegetarian

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