Compositions and methods are disclosed that relate to aminoglycoside-linker-peptide (P-L-A) conjugates having unexpectedly advantageous dual-function bactericidal properties. Encompassed compounds are shown to be capable of energy independent bacterial plasma membrane disruption and to exhibit potent toxicity to bacteria including antibiotic-resistant bacteria. These and related embodiments will find uses for treating bacterial infections including overcoming antibiotic resistance.
