G418 is an aminoglycoside related to Gentamicin and is toxic to bacteria, yeast, higher plants, mammalian cells, protozoans and helminths. It blocks polypeptide synthesis in both prokaryotic and eukaryotic cells and is useful for selection of genetically engineered eukarytoic cells in culture.

Broad spectrum nucleoside antibiotic. Inhibits protein synthesis in prokaryotic and eukaryotic organisms. Suitable for selection of cells carrying plasmids conferring blasticidin resistance. Blasticidin S inhibits hydrolysis of peptidyl-tRNA induced by release factors. It enhances the binding of…