In enzymology, a streptomycin 3"-kinase () is an enzyme that catalyzes the chemical reaction
ATP + streptomycin ADP + streptomycin 3"-phosphate
The enzyme characterised from Streptomyces bacteria converts the antibiotic, streptomycin, to a monophosphate, streptomycin 3''-phosphate, by transferring a phosphate group from the cofactor, adenosine triphosphate (ATP), which is converted to adenosine diphosphate (ADP).
This enzyme is a transferases, specifically one transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:streptomycin 3"-phosphotransferase. Other names in common use include streptomycin 3"-kinase (phosphorylating), and streptomycin 3"-phosphotransferase.
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