Welcome to comprehensive reference database of multi-drug resistance genes found in all forms of life such as archaea, eubacteria, fungi, plants and animals and even viruses. DbMDR is a non-redundant reference database of MDR genes that contains experimentally verified data curated from the scientific literature. DbMDR database covers information of MDR genes & their phylogenetic distribution, Human Diseases caused by antibiotics resistant bacterial strains and references. Besides experimentally elucidated data, it also covers predicted data such as potential orthologs of MDR genes, protein motifs and domains of MDR, which made DbMDR a unique and valuable resource for drug discovery research.