Kanamycin

Kanamycin (CAS No.: 59-01-8) is a well-characterized aminoglycoside antibiotic widely used in biomedical research as a tool compound for studying prokaryotic translation and antimicrobial resistance mechanisms. It exerts its primary activity through high-affinity binding to the 70S ribosomal subunit, leading to inhibition of translocation and induction of codon misreading, thereby disrupting protein synthesis in both Gram-negative and Gram-positive bacteria. Kanamycin demonstrates broad-spectrum inhibitory activity against diverse bacterial species, including Mycobacterium tuberculosis (both drug-sensitive and drug-resistant strains) and Klebsiella pneumoniae, with effective concentrations typically observed in the low micromolar to millimolar range depending on organism and assay conditions. In addition to its antibacterial properties, it has been reported to interfere with certain aspects of viral replication, making it a useful probe in studies of host–pathogen interactions. In research settings, kanamycin is commonly employed for selection of genetically engineered cells carrying resistance markers, investigation of ribosomal function, and evaluation of antimicrobial susceptibility and resistance pathways in cell-based and microbial culture systems. Experimental concentrations and exposure conditions vary according to specific model systems and study objectives.