ATP-dependent kinase, which is specific for glucosamine. Does not show kinase activity with any other sugar. ATP + D-glucosamine = ADP + D-glucosamine 6-phosphate + H(+) Optimum pH is 7.5-8.5. Optimum temperature is 40-42 degrees Celsius. Belongs to the eukaryotic-type N-acetylglucosamine kinase family. Extended N-terminus.