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Invitrogen
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Rifampicin, a potent antibiotic, primarily targets the bacterial RNA polymerase by binding to the beta subunit encoded by the rpoB gene, which is located on the bacterial chromosome. The structure of rifampicin includes an ansa bridge that facilitates its binding to the RNA polymerase, effectively inhibiting the transcription process. This binding is crucial for its antibacterial activity, particularly against Mycobacterium tuberculosis. Rifampicin's interaction with biological targets has been studied using molecular docking and density functional theory, revealing its electronic properties and stability. Additionally, rifampicin is a ligand for the pregnane X receptor (PXR), influencing the regulation of cytochrome P450 3A4, which is involved in drug metabolism. The presence of heterocyclic and basic substituents at specific positions in its structure contributes to its high antibacterial efficacy. Mutations in the rpoB gene can confer resistance to rifampicin, highlighting the importance of understanding its gene location and structural interactions for developing effective treatments.
仅用于科研。不用于诊断过程。未经明确授权不得转售。