Helicase (DNA) B, or, HELB, is a human gene. Other names include: DNA helicase B; hDHB. The encoded protein is an enzyme with an amino acid length of 1087 and a mass of 123.3 kDa. Other isoforms may exist. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.