NCIt definition : The sulfate salt form of neomycin, a broad spectrum aminoglycoside antibiotic derived
from Streptomyces fradiae with antibacterial activity. Neomycin is an antibiotic complex
consisting of 3 components: the two isomeric components B and C are the active components,
and neomycin A is the minor component. Neomycin irreversibly binds to the 16S rRNA
and S12 protein of the bacterial 30S ribosomal subunit. As a result, this agent interferes
with the assembly of initiation complex between mRNA and the bacterial ribosome, thereby
inhibiting the initiation of protein synthesis. In addition, neomycin induces misreading
of the mRNA template and causes translational frameshift, thereby results in premature
termination. This eventually leads to bacterial cell death.;