This entry consists of bacterial antibiotic resistance proteins, which confer resistance to various aminoglycosides they include:- aminoglycoside 3'-phosphotransferase or kanamycin kinase / neomycin-kanamycin phosphotransferase and streptomycin 3''-kinase or streptomycin 3''-phosphotransferase. The aminoglycoside phosphotransferases inactivate aminoglycoside antibiotics via phosphorylation [<cite idref="PUB00004379"/>]. The proteins are found in a range of taxonomic groups.