Mycifradin is an aminoglycoside antibiotic that binds to the bacterial 30S ribosomal subunit, so that its tRNA is misread and will not synthesize proteins to grow. Aminoglycosides are used primarily to treat infections associated with Gram-negative, aerobic bacteria, like the Enterobacter and Acinetobacter. Infections caused by the bacteria Gram-positive can be treated by aminoglycoside, though other antibiotics are less damaging and more effective. Other mycobacteria are likewise susceptible to aminoglycosides, like the one which causes tuberculosis. Aminoglycosides are not effective to fight viruses, fungi and anaerobic bacteria.