3OST2, or Heparan sulfate-glucosamine 3-sulfotransferase 2, is a human gene encoded by HS3ST2. It may also be known as: Heparan sulfate glucosamine 3-O-sulfotransferase 2; Heparan sulfate D-glucosaminyl 3-O-sulfotransferase 2; 3-OST-2; Heparan sulfate 3-O-sulfotransferase 2; h3-OST-2; Heparan sulfate glucosamine 3-O-sulfotransferase 2 ; 30ST2; heparan sulfate (glucosamine) 3-O-sulfotransferase 2. The encoded protein is an enzyme with an amino acid length of 367 and a mass of 41.5 kDa. 3OST2 is a member of the Sulfotransferase 1 family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.