Claspin, or, CLSPN, is a human gene. Other names include: hClaspin. The encoded protein has an amino acid length of 1339 and a mass of 151.1 kDa. Other isoforms may exist. Claspin is a member of the Claspin family. This gene shares homology with other species, including: Fly, Mouse, Rat, Zebrafish, Frog, Chicken.