MC-Val-Cit-PAB-dimethylDNA31 is a drug-linker conjugate employed in antibody-drug conjugates (ADCs) that exhibits robust antitumor efficacy. This conjugate utilizes the ADC linker, MC-Val-Cit-PAB, to link to the potent antitumor agent dimethylDNA31. Notably, dimethylDNA31 also demonstrates significant bactericidal activity against both persister and stationary-phase Staphylococcus aureus.