This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor. The systematic name of this enzyme class is ATP:hygromycin-B 7"-O-phosphotransferase. This enzyme is also called hygromycin B phosphotransferase.
References
Zalacain M, Pardo JM, Jimenez A (1987). "Purification and characterization of a hygromycin B phosphotransferase from Streptomyces hygroscopicus". Eur. J. Biochem. 162 (2): 419–22. doi:10.1111/j.1432-1033.1987.tb10618.x. hdl:10261/57133. PMID3026811.