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dihydrostreptomycin

n. antibiotic consisting of a hydrogenated form of streptomycin; used against tuberculosis and tularemia and Gram-negative organisms

Wikipedia
Dihydrostreptomycin

Dihydrostreptomycin is a derivative of streptomycin that has a bactericidal property. It's a semisynthetic aminoglycoside antibiotic used in the treatment of tuberculosis.

It acts by irreversibly binding the S12 protein in the bacterial 30S ribosomal subunit, after being actively transported across the cell membrane, which interferes with the initiation complex between the mRNA and the bacterial ribosome. This leads to the synthesis of defective non-functional proteins, which results in the bacterial cell's death.

It causes ototoxicity, which is why it is no longer used in humans.